CN112130270A

CN112130270A - Split type lens, preparation method thereof and electronic equipment

Info

Publication number: CN112130270A
Application number: CN201910556433.8A
Authority: CN
Inventors: 田中武彦; 梅哲文; 蒋伟杰; 裴海鹏; 孙鑫翔
Original assignee: Ningbo Sunny Opotech Co Ltd
Current assignee: Ningbo Sunny Opotech Co Ltd
Priority date: 2019-06-25
Filing date: 2019-06-25
Publication date: 2020-12-25

Abstract

The application discloses a split type lens, a manufacturing method of the split type lens and electronic equipment. One specific implementation mode of the split type lens comprises the following steps: a first barrel accommodating at least one lens; and a second barrel adjacent to the first barrel, a second end face of the second barrel and a first end face of the first barrel facing each other, and the second barrel accommodating at least one lens; at least one of the first end face and the second end face is provided with a strengthening array, and the strengthening array is a groove sunken in the at least one end face or a bulge which is protruded out of the at least one end face and has a protruded distance smaller than the distance between the first end face and the second end face.

Description

Split type lens, preparation method thereof and electronic equipment

Technical Field

The present disclosure relates to the field of optical lenses, and more particularly, to a split type lens, a method for manufacturing the same, and an electronic device including the same.

Background

High pixel, large aperture cell phone cameras typically include more than six lenses and it is generally desirable for the lenses to occupy a smaller size. In actual production, the assembly of a plurality of small-sized lenses is difficult, and the yield of camera assembly is low. There is a need in the art for a lens with good assembly properties to improve imaging quality and to increase production yield.

Disclosure of Invention

In order to solve or partially solve the above-mentioned defects in the prior art, the following technical solutions are proposed in the embodiments of the present application.

In a first aspect, an embodiment of the present application provides a split lens, which includes a first barrel, where the first barrel accommodates at least one lens; and a second barrel adjacent to the first barrel, a second end face of the second barrel and a first end face of the first barrel facing each other, and the second barrel accommodating at least one lens; at least one of the first end face and the second end face is provided with a strengthening array, and the strengthening array is a groove sunken in the at least one end face or a bulge which is protruded out of the at least one end face and has a protruded distance smaller than the distance between the first end face and the second end face.

In one embodiment, the first barrel and the second barrel are bonded to each other by an adhesive disposed around the reinforcing array.

In one embodiment, the reinforcement arrays include first and second reinforcement arrays staggered in a circumferential direction of the at least one end face.

In one embodiment, the second reinforcement array is arranged radially inward of the at least one end face compared to the first reinforcement array.

In one embodiment, the first reinforcement array includes a plurality of first arcuate unitary structures extending and spaced apart in a circumferential direction of at least one end face, the first arcuate unitary structures being convex or concave from the at least one end face; the second reinforcement array includes a plurality of second arcuate unitary structures extending and spaced apart in a circumferential direction of the at least one end face, the second arcuate unitary structures being convex or concave from the at least one end face.

In one embodiment, each second arcuate unitary structure is disposed between two first arcuate unitary structures in a circumferential direction of at least one end face.

In one embodiment, the first reinforcement array comprises a plurality of first bar-shaped unitary structures extending in a radial direction of the at least one end face and spaced apart in a circumferential direction of the at least one end face, the first bar-shaped unitary structures protruding or recessed from the at least one end face; the second reinforcement array includes a plurality of second bar-shaped unit structures extending in a radial direction of the at least one end surface and spaced apart in a circumferential direction of the at least one end surface, the second bar-shaped unit structures being protruded or recessed from the at least one end surface.

In one embodiment, each second strip-shaped single-body structure is arranged between two first strip-shaped single-body structures in the circumferential direction of at least one end face.

In one embodiment, the first reinforcement array comprises a plurality of first bar-shaped unitary structures extending in a radial direction of the at least one end face and spaced apart in a circumferential direction of the at least one end face, the first bar-shaped unitary structures protruding or recessed from the at least one end face; the second reinforcement array includes a plurality of second bar-shaped unit structures extending in a radial direction of the at least one end surface and spaced apart in a circumferential direction of the at least one end surface, the second bar-shaped unit structures being protruded or recessed from the at least one end surface, and a length of the second bar-shaped unit structures being smaller than a length of the first bar-shaped unit structures.

In one embodiment, the reinforcing array is a groove recessed into the at least one end face, the groove extending to an outer periphery of the at least one end face.

In one embodiment, the adhesive is a photo-cured adhesive, a thermal cured adhesive, a photo-thermal cured adhesive, or a moisture cured adhesive.

In one embodiment, the reinforcement array is integrally formed with at least one of the end faces.

In one embodiment, the first end face and the second end face comprise at least three flat areas corresponding to each other.

In one embodiment, at least three flat areas communicate with each other radially outside or inside the reinforcement array.

In one embodiment, at least three flat areas alternate with grooves or protrusions of the reinforcing array.

In a second aspect, an embodiment of the present application provides an electronic device, which includes the split type lens described above.

In a third aspect, an embodiment of the present application provides a method for manufacturing a split type lens. The method comprises the following steps: a first lens barrel accommodating at least one lens and a second lens barrel accommodating at least one lens are pre-positioned, a second end face of the second lens barrel and a first end face of the first lens barrel face each other, a reinforcing array is arranged on at least one of the first end face and the second end face, the reinforcing array is a groove sunken in the at least one end face or a protrusion protruding out of the at least one end face, and the protruding distance is smaller than the distance between the pre-positioned first end face and the second end face; determining the relative position of the pre-positioned first lens barrel and the second lens barrel through active calibration; applying an adhesive around the reinforcing array; and curing the adhesive based on the relative position determined by the active calibration.

In one embodiment, the method further comprises: before pre-positioning, the posture of the second lens barrel relative to the first lens barrel is measured by utilizing at least three flat areas between the first end surface and the second end surface.

In one embodiment, curing the adhesive based on the relative position determined by the active calibration comprises: adjusting the first lens barrel and the second lens barrel to relative positions determined by active calibration; and curing the adhesive at the adjusted position.

In one embodiment, adjusting the first barrel and the second barrel to the relative position determined by the active calibration comprises: the adhesive is uniformly distributed by the movement of the first barrel relative to the second barrel during adjustment.

The split type lens provided by the embodiment of the disclosure has at least one of the following beneficial effects:

1. the lenses can be accurately closed, so that the assembly yield of the split lenses produced in batch is improved, the resolution of the lenses is improved, and the imaging effect is improved;

2. even if the area for bonding is small, the adhesive force can be provided to meet the increasing requirements of pixels, diaphragms, lenses and the like of the lens under the condition that the occupied space of the lens is still small;

3. the adhesive can be applied more uniformly between the two lens barrels, and then the adhesive has little influence on the accuracy of the split type lens when cured.

4. Preventing the adhesive with fluidity from flowing out of the bonding area before curing, and preventing the adhesive from polluting the optical effective area of the lens;

5. the adhesive has high strength, the reliability of the split type lens is high, and the relative position relationship between the lens barrels can be well maintained when the split type lens is impacted by the outside.

Drawings

Other features, objects and advantages of the disclosure will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:

fig. 1 is a schematic structural diagram of a split type lens according to an embodiment of the present application;

FIG. 2 shows an enlarged view at A in FIG. 1;

fig. 3 is a schematic structural view illustrating another split type lens according to an embodiment of the present application;

FIG. 4 is a diagram illustrating a state in which a split type lens is mounted according to an embodiment of the present application;

FIG. 5 shows a schematic exploded perspective view of a split lens according to an embodiment of the present application;

fig. 6 is a schematic structural view illustrating another split type lens according to an embodiment of the present application;

fig. 7 is a schematic structural view illustrating another split type lens according to an embodiment of the present application;

fig. 8 is a schematic view illustrating another bonding state of the split lens of fig. 3;

FIG. 9 shows a schematic block diagram of a lower barrel according to an embodiment of the present application;

FIG. 10 shows a schematic block diagram of another lower barrel according to an embodiment of the present application;

FIG. 11 shows a schematic block diagram of an upper barrel according to an embodiment of the present application;

fig. 12 is a schematic configuration diagram showing another upper barrel according to an embodiment of the present application;

FIG. 13 shows a schematic block diagram of another lower barrel according to an embodiment of the present application;

FIG. 14 shows a schematic block diagram of another lower barrel according to an embodiment of the present application;

fig. 15 shows a schematic configuration diagram of another upper barrel according to an embodiment of the present application;

FIG. 16 shows a schematic block diagram of another lower barrel according to an embodiment of the present application; and

fig. 17 is a schematic structural diagram illustrating another split type lens according to an embodiment of the present application.

Detailed Description

For a better understanding of the present application, various aspects of the present application will be described in more detail with reference to the accompanying drawings. It should be understood that the detailed description is merely illustrative of exemplary embodiments of the present application and does not limit the scope of the present application in any way. Like reference numerals refer to like elements throughout the specification. The expression "and/or" includes any and all combinations of one or more of the associated listed items.

It should be noted that in this specification, the expressions first, second, third, etc. are used only to distinguish one feature from another, and do not represent any limitation on the features. Accordingly, the first barrel discussed below may also be referred to as a second barrel without departing from the teachings of the present application. And vice versa.

In the drawings, the thickness, size and shape of the components have been slightly adjusted for convenience of explanation. The figures are purely diagrammatic and not drawn to scale. For example, the height and length of the monomers are not in the proportions found in actual production. As used herein, the terms "approximately", "about" and the like are used as table-approximating terms and not as table-degree terms, and are intended to account for inherent deviations in measured or calculated values that would be recognized by one of ordinary skill in the art.

It will be further understood that the terms "comprises," "comprising," "has," "having," "includes" and/or "including," when used in this specification, specify the presence of stated features, elements, and/or components, but do not preclude the presence or addition of one or more other features, elements, components, and/or groups thereof. Moreover, when a statement such as "at least one of" appears after a list of listed features, the entirety of the listed features is modified rather than modifying individual elements in the list. Furthermore, when describing embodiments of the present application, the use of "may" mean "one or more embodiments of the present application. Also, the term "exemplary" is intended to refer to an example or illustration.

Unless otherwise defined, all terms (including engineering and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. In addition, unless explicitly defined or contradicted by context, the specific steps included in the methods described herein are not necessarily limited to the order described, but can be performed in any order or in parallel. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

Fig. 1 shows a schematic block diagram of a split type lens according to an embodiment of the present application, and fig. 3 shows a schematic block diagram of another split type lens according to an embodiment of the present application. The split type lens provided by the embodiment of the application comprises a first lens barrel and a second lens barrel, wherein a second end face of the second lens barrel and a first end face of the first lens barrel face to each other, and at least one lens is accommodated in the first lens barrel and the second lens barrel respectively.

For example, referring to fig. 1, the upper barrel 1 in the embodiment shown in fig. 1 may be regarded as a first barrel, the image side end surface of the upper barrel 1 is a first end surface, and the object side end surface of the lower barrel 2 is a second end surface. For example, referring to fig. 3, the lower barrel 2 in the embodiment shown in fig. 3 may also be regarded as a first barrel, and the object-side end surface of the lower barrel 2 is a first end surface. The light rays can travel along the light path and be imaged through the split lens. Illustratively, the split-type lens further comprises a photosensitive assembly, a perpendicular line of the center of a photosensitive surface of the photosensitive assembly can be taken as a theoretical optical axis, and the respective axes of the lens barrels are approximately coincident with the optical axis.

In an exemplary embodiment, the upper barrel 1 is a first barrel, and the second barrel is located on the image side of the first barrel. It is understood that the split lens may include three or more lens barrels, and for example, when the lens barrel closest to the object side is taken as the first lens barrel, the middle lens barrel is taken as the second lens barrel; when the middle barrel is regarded as the first barrel, the barrel closest to the image side is regarded as the second barrel. Illustratively, the second barrel is located at an object side of the first barrel.

The split type lens that this application embodiment provided is provided with on at least one terminal surface in first terminal surface and second terminal surface and strengthens the array. Referring to fig. 1, an upper barrel 1 is a first barrel, a surface of the upper barrel 1 adjacent to a lower barrel 2 is a first end surface, the first end surface is provided with a first reinforcing array 30, and the first reinforcing array 30 is a protrusion or a groove with a depth, the height of which is smaller than the thickness of a gap between the upper barrel 1 and the lower barrel 2. A plurality of bonding surfaces along the axial direction of the lens barrel are arranged between the adhesive 4 and the first end surface of the upper lens barrel 1, the bonding area between the adhesive 4 and the end surface of the lens barrel along the axial direction of the lens barrel is large, and the structural strength and the thrust resistance of the split type lens along the axial direction of the lens barrel can be enhanced. The adhesion of the adhesion surface and the fitting force of the first reinforcing array 30 and the adhesive 4 can enhance the structural strength of the split lens in the direction perpendicular to the axis of the lens barrel.

In an exemplary embodiment, the image side end surface of the upper barrel 1 is provided with a first strengthening array 30, and the object side end surface of the lower barrel 2 is provided with a second strengthening array. Illustratively, the projection of the first reinforcing array on the first end surface has a symmetrical structure, and the projection of the second reinforcing array on the second end surface also has a symmetrical structure. The upper lens barrel 1 and the lower lens barrel 2 comprise a bonding layer formed by curing a bonding agent 4, wherein the bonding layer surrounds the first strengthening array and the second strengthening array in the circumferential direction of the lens barrel and respectively abuts against the first strengthening array and the second strengthening array in the radial direction. Because the first reinforced array and the second reinforced array are respectively provided with a symmetrical structure, the lateral external force resistance of the bonded split-type lens in all directions is balanced.

The application provides a split type camera lens strengthens the array through the setting and has enlarged the combination area of the terminal surface of adhesive 4 with the lens cone, and coating adhesive 4 that can be more even has promoted the structural strength of split type camera lens. And the adhesive 4 with fluidity can be prevented from flowing out of the position of the reinforced array, the risk of glue overflow is reduced, and the adhesive 4 is prevented from polluting the optical effective area of the lens. When the reinforcing array is a protrusion protruding from the end face where the reinforcing array is located, the protruding distance of the reinforcing array is smaller than the distance between the first end face and the second end face, so that the first lens barrel and the second lens barrel are not influenced to be matched according to a preset clearance, and the first lens barrel and the second lens barrel can be freely adjusted in relative positions, for example, the first lens barrel and the second lens barrel can freely translate and rotate relative to each other, and the requirement on positioning accuracy between the first lens barrel and the second lens barrel is lowered.

When a split lens including a plurality of lens barrels is assembled, an optical axis is generally placed in a vertical direction with an image side facing downward. Illustratively, the object-side end of the lower barrel 2 has a flat area 201 (see fig. 9, 13-14, and 16) for detection by the altimetric device before bonding. By measuring the flat area 201 of the object side end of the lower barrel 2, the current mounting parameters of the lower barrel 2 can be obtained.

The embodiment of the present application further provides a method for manufacturing a split type lens, which includes the following steps:

1) the method comprises the steps of pre-positioning a first lens barrel accommodating at least one lens and a second lens barrel accommodating at least one lens along an optical axis, wherein a second end face of the second lens barrel faces a first end face of the first lens barrel, a reinforcing array is arranged on at least one of the first end face and the second end face, and the reinforcing array is a groove sunken in the at least one end face or a protrusion protruding out of the at least one end face and having a protruding distance smaller than the distance between the pre-positioned first end face and the second end face.

2) The relative position of the pre-positioned first barrel and second barrel is determined by active calibration.

3) An adhesive is applied around the reinforcing array. The specific coating method is not limited as long as the reinforcing array is ensured to be positioned on the adhesive surface.

4) The adhesive is cured based on the relative position determined by the active calibration.

According to the method for manufacturing the split type lens, the adhesive 4 can be uniformly coated on the preset area, the adhesive 4 can be attached to the side wall surface of the protrusion or the side wall surface of the groove along the radial direction of the lens barrel, and the product yield is improved by effectively controlling the coating state of the adhesive 4.

In an exemplary embodiment, the second barrel is located on an image side of the first barrel, and the step 1) includes: the posture of the object side end surface, i.e., the second end surface, of the second lens barrel is measured relative to a predetermined reference (e.g., a photosensitive assembly). Specifically, the posture of the second end face includes an included angle with the reference and a distance from the reference.

In an exemplary embodiment, after measuring the posture of the second end face, an adhesive is coated on the second end face around the first reinforcing array, and then the first barrel and the second barrel are pre-positioned. So configured, the adhesive 4 may be applied with the first reinforcing array in an active calibration step.

In an exemplary embodiment, step 4) includes: adjusting the first lens barrel and the second lens barrel to relative positions determined by active calibration; and curing the adhesive at the adjusted position. In addition, the relative movement of the first lens barrel and the second lens barrel can be utilized in the adjustment process, and the adhesive is uniformly distributed by means of the first strengthening array.

Referring to fig. 4 and 5, in the active calibration step, the photosensitive elements, the lower lens barrel 2 and the upper lens barrel 1 are arranged along the optical axis, an image formed by the split type lens is obtained through the photosensitive elements, then the imaging quality (including optical parameters such as peak value, field curvature, astigmatism) of the split type lens is calculated based on image algorithms such as Modulation Transfer Function (MTF) and Spatial Frequency Response (SFR), and the adjustment amount is calculated, the direction from the image side to the object side of the optical axis is taken as the z-axis forward direction, the x-axis and the y-axis are taken in the optical axis vertical plane, and three rotational dimensions around the three axes of the x-axis, the y-axis and the z-axis are u, v and w, respectively. The relative position between the upper barrel 1 and the lower barrel 2 can be adjusted by adjusting the amount of the upper barrel 1 in at least one of the x-axis, the y-axis, the z-axis, and u, v, w, and the first strengthening array 30 and the second strengthening array 31 do not affect the adjustment process. And after adjustment, the imaging quality of the split type lens reaches a target value.

In an exemplary embodiment, the upper barrel 1 is spaced from the lower barrel 2 by less than 100 μm on the optical axis. The distance between two adjacent lens cones is determined by the actual adjustment result, and the limiting of the distance between two adjacent lens cones can fully exert the adhesive force of the adhesive 4 and better exert the function of the first reinforcing array 30 to improve the structural strength of the split lens. Illustratively, the first reinforcement array 30 is a protrusion protruding from the first end surface by a distance less than or equal to 20 μm.

In an exemplary embodiment, the reinforcing array is a groove recessed into the end surface thereof, the groove extending to the outer periphery of the end surface. For example, the lower barrel 2 may include one reinforcing array, and the reinforcing array may include a plurality of first bar-shaped single structures extending in a radial direction of an object-side end surface of the lower barrel 2 and spaced apart in a circumferential direction of the end surface. The first bar-shaped single structure is recessed from the end surface, and one end of the first bar-shaped single structure facing away from the optical axis extends to the outer periphery of the object-side end surface of the lower barrel 2. When the adhesive 4 is applied to the end face, air trapped in the groove can escape through the gap extending to the outer periphery, resulting in fewer air bubbles and stronger adhesion.

In the split lens provided in the embodiment of the present application, the upper barrel 1 may be provided with a first reinforcing array 30 and a second reinforcing array 31, the first reinforcing array 30 and the second reinforcing array 31 are respectively a groove recessed in the first end surface or a protrusion protruding from the first end surface and having a protruding distance smaller than a distance between the first end surface and the second end surface, and the second reinforcing array 31 and the first reinforcing array 30 are staggered along a circumferential direction of the upper barrel 1. First reinforcement array 30 and second reinforcement array 31 also differ in at least one of array trajectory, radius, or morphology of the individual structures comprised by the arrays. The second strengthening array 31 is arranged to further strengthen the structural strength of the split-type lens.

In the exemplary embodiment, second reinforcement array 31 is arranged radially inward of the end surfaces of the first reinforcement array 30 as compared to the two. Referring to fig. 1 to 7, in the radial direction of upper barrel 1, second reinforcement array 31 is disposed inside first reinforcement array 30, and first reinforcement array 30 and second reinforcement array 31 have a gap therebetween. When applying the adhesive 4, the adhesive 4 is mostly located between the two reinforcing arrays, so that the risk of the adhesive 4 spilling over to the outer periphery or to the inner rim is reduced.

In the exemplary embodiment, first reinforcement array 30 and second reinforcement array 31 are each annular in shape. Optionally, the reinforcing array is a rounded rectangle, a hexagon, an octagon or an ellipse. The annular reinforcing array can enable the supporting surface of the adhesive 4 corresponding to the annular reinforcing array to be larger and more stable, the adhesive 4 isolates the inside of the gap between the two lens barrels from the outside, and external dust, water vapor and the like are prevented from entering an optical effective area through the gap between the two lens barrels. The array shape with axial symmetry or central symmetry enables the adhesive 4 coated on the array shape to be axially symmetrical or central symmetry relative to the optical axis, so that the variation of the adhesive 4 during curing is balanced and offset, and the split type lens has better precision and adhesive strength.

In an exemplary embodiment, the first cell structures of the first reinforcement array 30 have the same shape in the optical axis normal plane, and the second cell structures of the second reinforcement array 31 have the same shape in the optical axis normal plane. Optionally, the projection of the first monolithic structure or the second monolithic structure is circular, triangular, elliptical, or quadrilateral in a plane perpendicular to the optical axis.

In the exemplary embodiment, the upper barrel 1 serves as a first barrel, and the second barrel is located on the image side of the first barrel. The upper barrel 1 is provided with a first strengthening array 30 and a second strengthening array 31 which are convex or concave in the optical axis direction to the image side end face, and the second strengthening array 31 and the first strengthening array 30 are staggered in the circumferential direction of the image side end face of the upper barrel 1.

In the exemplary embodiment, the lower barrel 2 serves as a first barrel, and the second barrel is located on the object side of the first barrel. The lower barrel 2 is provided with a first strengthening array 30 and a second strengthening array 31 protruding or recessed from the object-side end surface along the optical axis direction, and the second strengthening array 31 and the first strengthening array 30 are staggered along the circumferential direction of the object-side end surface of the lower barrel 2.

In an exemplary embodiment, referring to fig. 2, the first reinforcement array 30 and the second reinforcement array 31 are protrusions having a single body peripheral surface 301 and a single body top surface 302, and the adhesive 4 covers the single body peripheral surface 301 and the single body top surface 302. The first reinforcement array 30 and the second reinforcement array 31 in fig. 2 have a rectangular shape in longitudinal section, and may have a trapezoidal, angular or hemispherical shape. In addition, when the first reinforcing array 30 and the second reinforcing array 31 are protrusions protruding from the end surface of the lens barrel, the strength of the end of the lens barrel can be enhanced, and deformation can be resisted better.

In an exemplary embodiment, referring to fig. 1 and 3, each of the first reinforcement array 30 and the second reinforcement array 31 protrudes from an end surface of the lens barrel, and a height of each of the first reinforcement array 30 and the second reinforcement array 31 relative to the end surface of the lens barrel is smaller than a distance between the two opposing end surfaces of the lens barrel on the optical axis. In the exemplary embodiment, the height at which first strength array 30 and second strength array 31 each protrude from the end face is less than or equal to 20 μm. Illustratively, the height of each of the first and

second reinforcement arrays

30 and 31 is smaller than the pitch of the two lens barrels. Between two adjacent lens barrels, the first reinforcement array 30 and the second reinforcement array 31 may be provided on the end surface of the upper lens barrel 1, and the first reinforcement array 30 and the second reinforcement array 31 may be provided on the end surface of the lower lens barrel 2. When the split-type lens is assembled, the relative position between the two lens barrels needs to be adjusted, and the heights of the first reinforced array 30 and the second reinforced array 31 are limited so as to avoid the two arrays from influencing the operation of active calibration.

In an exemplary embodiment, referring to fig. 6, the reinforcing array of the image-side end of the upper barrel 1 is a groove recessed in the end surface, and a part of the adhesive 4 is located in the groove, and is adhered to the groove bottom and the side wall surface of the groove; referring to fig. 7, the reinforcing array of the object-side end of the lower barrel 2 is a groove recessed in the end surface, and a part of the adhesive 4 is located in the groove and adhered to the groove bottom and the side wall surface of the groove. Illustratively, the lens barrel end surface may have both a groove and a protrusion.

Illustratively, the first strengthening array 30 is disposed on the image-side end surface of the upper barrel 1, and the third strengthening array is disposed on the object-side end surface of the lower barrel 2. The first reinforcement array 30 and the third reinforcement array are respectively a groove recessed in the end surface of each reinforcement array or a protrusion protruding from the end surface of each reinforcement array and having a protruding distance smaller than the distance between the first end surface and the second end surface. The upper lens barrel 1 and the lower lens barrel 2 are both provided with the strengthening arrays, so that the binding force of the adhesive 4 and the two end faces is improved, and the capability of the split type lens barrel for resisting axial external force and radial external force is further improved.

In an exemplary embodiment, the first reinforcing array 30 is integrally formed with the end surface of the lens barrel where it is located. Illustratively, the split type lens comprises three lens barrels, wherein the image side end and the object side end of the middle lens barrel are both provided with groove type strengthening arrays, and the middle lens barrel and the strengthening arrays are integrally formed through an injection molding process. Illustratively, the split lens includes a plurality of lens barrels, and besides the lens barrel at the object side, an object side end of each lens barrel is provided with a first reinforcing array 30 and a second reinforcing array 31 in a convex manner. The lens cone formed integrally is convenient to manufacture and high in structural strength.

In an exemplary embodiment, adhesive 4 covers first reinforcement array 30 and second reinforcement array 31. Referring to fig. 8, the object-side end of the lower barrel 2 is provided with a first reinforcement array 30 and a second reinforcement array 31, the first reinforcement array 30 is covered by the adhesive 4, and only a part of the second single structure included in the second reinforcement array 31 is covered. The adhesive 4 covers the first reinforcement array 30 to take full advantage of the bonding surface provided by the first reinforcement array 30. The adhesive 4 covers the portion of the second monolithic structure to better prevent the adhesive from flowing in the direction of the second monolithic structure prior to curing.

In exemplary embodiments, the adhesive 4 is a photo-curing adhesive, a thermal curing adhesive, a photo-thermal curing adhesive, or a moisture curing adhesive. Photo-curable adhesives, thermal curable adhesives, photo-thermal curable adhesives or moisture curable adhesives all have a certain fluidity before curing.

In an exemplary embodiment, referring to fig. 10 and 11, at one side end surface of the lens barrel, the first reinforcement array 30 includes a plurality of first bar-shaped single structures spaced apart in a circumferential direction of the end surface on which it is located, the first bar-shaped single structures extending in a radial direction of the end surface on which it is located, and which are protruded or recessed from the end surface on which it is located; the second reinforcement array 31 includes a plurality of second bar-shaped single structures spaced apart in the circumferential direction of the end surface on which the second reinforcement array is located, the second bar-shaped single structures extending in the radial direction of the end surface on which the second reinforcement array is located, and the second bar-shaped single structures being protruded or recessed from the end surface on which the second reinforcement array is located. As described above, in the adjustment process, the two lens barrels can move relatively, and the adhesive 4 is distributed more uniformly by means of the first reinforcing array and the second reinforcing array, so that the adhesive 4 can be better filled in the gap between the lens barrels, and the problems of air bubbles, glue shortage, glue breaking and the like which may be caused when the adhesive 4 is coated are solved.

In an exemplary embodiment, referring to fig. 10, each second strip-shaped monomer structure is arranged between two first strip-shaped monomer structures in the circumferential direction of the object-side end surface of the lower barrel 2; referring to fig. 11, each of the second strip-shaped single structures is arranged between two of the first strip-shaped single structures in the circumferential direction of the image-side end surface of the upper barrel 1. Such a configuration may better prevent the adhesive 4 at the first reinforcement array 30 from flowing inboard.

Further, when the first strengthening array 30 and the second strengthening array 31 are convex, the barrel of the lens barrel supports the end face more stably, the strength of the end face is higher, and the installation accuracy and the reliability of the split type lens are high.

In an exemplary embodiment, the first reinforcement array 30 includes a plurality of first arc-shaped unitary structures extending and spaced apart in a circumferential direction of an end surface on which the first reinforcement array is located, the first arc-shaped unitary structures being convex or concave from the end surface on which the first reinforcement array is located; the second reinforcement array 31 includes a plurality of second arc-shaped single structures extending in the circumferential direction of the end surface thereof and spaced apart from each other, and the second arc-shaped single structures are protruded or recessed from the end surface thereof. The first reinforcement array 30 and the second reinforcement array 31 form a containing space therebetween, which can better adsorb the adhesive and prevent the adhesive from flowing, thereby reducing the risk of glue overflow.

Referring to fig. 12, the first reinforcing array 30 includes a plurality of first arc-shaped single structures extending and spaced apart in a circumferential direction of the image-side end surface of the upper barrel 1, and the second reinforcing array 31 includes a plurality of second arc-shaped single structures extending and spaced apart in the circumferential direction of the image-side end surface of the upper barrel 1, the first arc-shaped single structures and the second arc-shaped single structures being respectively protruded or recessed from the image-side end surface of the upper barrel 1. Referring to fig. 13, the first reinforcing array 30 includes a plurality of first arc-shaped single structures extending and spaced apart in a circumferential direction of the object-side end surface of the lower barrel 2, and the second reinforcing array 31 includes a plurality of second arc-shaped single structures extending and spaced apart in the circumferential direction of the object-side end surface of the lower barrel 2, and the first arc-shaped single structures and the second arc-shaped single structures are respectively protruded or recessed from the object-side end surface of the lower barrel 2.

In the exemplary embodiment, referring to fig. 12, each of the second arc-shaped single structures is arranged between two of the first arc-shaped single structures in the circumferential direction of the image-side end surface of the upper barrel 1. Illustratively, referring to fig. 13, each of the second arc-shaped single structures is disposed between two of the first arc-shaped single structures in a circumferential direction of the object-side end surface of the lower barrel 2.

Optionally, more reinforcement arrays may be provided, and each layer of reinforcement array includes a single structure at different angles in the circumferential direction of the end surface relative to the center of the end surface. The multilayer annular array can better prevent the flowing of the adhesive, and the single structures on different layers provide adhesive surfaces which are bonded with the adhesive 4 and are located at different positions, so that the structural strength of the split lens can be better improved, and the external impact in the vertical direction can be resisted.

In an exemplary embodiment, referring to fig. 14, the first reinforcing array 30 includes a plurality of first bar-shaped single structures spaced apart in a circumferential direction of the object-side end surface of the lower barrel 2, the first bar-shaped single structures extending in a radial direction of the object-side end surface of the lower barrel 2 and protruding or recessed from the object-side end surface; the second reinforcing array 31 includes a plurality of second bar-shaped single structures spaced apart in the circumferential direction of the object-side end surface of the lower barrel 2, the second bar-shaped single structures extending in the radial direction of the object-side end surface of the lower barrel 2 and protruding or recessed from the object-side end surface in the optical axis direction; and the length of the second strip-shaped monomer structure is smaller than that of the first strip-shaped monomer structure. Illustratively, a portion of the object-side end surface of the lower barrel 2 located inside the second strengthening array 31 serves as the flat region 201. Illustratively, the monolithic structure is a fan-shaped or wave-shaped structure, the longitudinal direction of which is arranged substantially in the radial direction of the structure. Put the length direction of first monomer structure and the length direction of second monomer structure along the radial of place terminal surface, the gomphosis level of adhesive 4 and monomer structure is more, and the length of first bar monomer structure is greater than the length of second bar monomer structure, and the adhesive strength of adhesive 4 and lens cone is higher.

Exemplarily, referring to fig. 15, the first reinforcing array 30 includes a plurality of first bar-shaped single structures spaced apart in a circumferential direction of the image-side end surface of the upper barrel 1, the first bar-shaped single structures extending in a radial direction of the image-side end surface of the upper barrel 1 and protruding or recessed from the image-side end surface in the optical axis direction; the second reinforcing array 31 includes a plurality of second bar-shaped single structures spaced apart in the circumferential direction of the image-side end surface of the upper barrel 1, the second bar-shaped single structures extending in the radial direction of the image-side end surface of the upper barrel 1 and protruding or recessed therefrom; and the length of the second strip-shaped monomer structure is smaller than that of the first strip-shaped monomer structure.

In an exemplary embodiment, referring to fig. 15, the first bar-shaped single structure is recessed from the image side end surface of the upper barrel 1, and one end of the first bar-shaped single structure facing away from the optical axis extends to the outer periphery of the image side end surface of the upper barrel 1. Exemplarily, referring to fig. 14, the first bar-shaped single structure is recessed from the object-side end surface of the lower barrel 2, and one end of the first bar-shaped single structure facing away from the optical axis extends to the outer periphery of the object-side end surface of the lower barrel 2. The first strip-shaped monomer structure is recessed into the end face to form a groove, and the groove is communicated with the periphery, so that when the end face is coated with the adhesive 4, bubbles remained in the groove are reduced, the adhesive 4 is more comprehensively attached to the wall surface of the groove, and the adhesive strength is improved.

In the exemplary embodiment, the second barrel is located on the image side of the first barrel, and the object-side end surface of the second barrel includes three flat regions 201. By arranging the flat area 201, the posture of the second end surface of the second barrel relative to the predetermined positioning reference can be measured more accurately.

In an exemplary embodiment, first reinforcement array 30 or second reinforcement array 31 includes at least three segments of spacers that are configured to form flattened region 201. Three flat areas 201 alternate with grooves or protrusions of the reinforcing array. Referring to fig. 13 and 14, in an exemplary embodiment, the flattened region 201 may communicate to form a continuous region radially inward of the reinforcement array.

Referring to fig. 16, the object-side end surface of the lower barrel 2 is provided with 4 flat regions 201, and one end of the flat region 201 away from the optical axis extends to the outer periphery of the object-side end surface of the lower barrel 2 in a flat manner, so that data of the flat region 201 can be measured by an external height measuring device more conveniently, and meanwhile, the bonding and supporting range of the adhesive 4 relative to the lower barrel 2 is larger.

In the exemplary embodiment, the object-side end surface of the lower barrel 2 is provided with a plurality of reinforcing arrays, the innermost reinforcing array is an annular array, and each of the reinforcing arrays further includes a space at which the flat region 201 is located.

In an exemplary embodiment, at least three flat areas communicate with each other radially outside or inside the reinforcement array. The object-side end surface of the lower barrel 2 is provided with a second strengthening array 31, and an annular plane is arranged outside the second strengthening array 31 along the radial direction of the object-side end surface of the lower barrel 2, and the annular plane can be regarded as a plurality of flat areas 201 which are communicated together. The annular second reinforcing array 31 is more advantageous in preventing the adhesive 4 from flowing to the inner side where the lens is located, and the flat area 201 is disposed at the outer side, so that the inclination degree of the lower barrel 2 can be measured more accurately.

In an exemplary embodiment, referring to fig. 9, second reinforcement array 31 has a ring shape, and may define at least three flat regions 201 on both the inside and outside. The second end face is provided with flat areas 201 at positions close to the axis and the outer periphery, and the deformation of the second end face can be measured.

In an exemplary embodiment, referring to fig. 16, the image side end surface of the upper barrel 1 is provided with a first strengthening array 30, the object side end surface of the lower barrel 2 is provided with a second strengthening array 31, and the second strengthening array 31 includes four sections of gaps in the circumferential direction for forming the flat regions 201, respectively.

However, it is understood by those skilled in the art that the above embodiments are only examples, and the strengthening array and the flat region 201 may be disposed at the upper barrel 1 or the lower barrel 2 in other manners. Referring to fig. 17, the upper barrel 1 is provided with first and

second strengthening arrays

30 and 31 recessed in the image-side end surface thereof, and the lower barrel 2 is provided with third and fourth strengthening arrays recessed in the object-side end surface thereof. Illustratively, the upper barrel 1 includes a first strengthening array 30 and a second strengthening array 31 recessed into an image-side end surface thereof, and the lower barrel 2 includes a third strengthening array and a fourth strengthening array protruding from an object-side end surface thereof by a distance of 20 μm or less.

In an exemplary embodiment, the present application also provides a split lens, including an upper lens having a first end surface; and a lower barrel 2 accommodating at least one lens, the lower barrel 2 having a second end face, the second end face and the first end face being opposed to each other; in an exemplary embodiment, a reinforcing array is disposed on at least one of the first end face and the second end face, and the reinforcing array is a groove recessed in the end face or a protrusion protruding from the end face and having a protruding distance smaller than a distance between the first end face and the second end face.

In an exemplary embodiment, the first end surface of the upper lens includes an active radius area and a null area located radially outward of the active radius area, the reinforcing array being located in the null area.

In an exemplary embodiment, the inactive areas of the lower barrel 2 and the upper lens are bonded to each other by an adhesive 4 disposed around the reinforcing array. By bonding the lower barrel 2 and the upper lens, the size and weight of the split lens can be reduced.

In an exemplary embodiment, the inactive area of the first end surface of the upper lens is provided with the aforementioned first stiffening array 30. The first reinforcing array 30 can improve the structural strength of the split lens and prevent the adhesive 4 from contaminating the optically active area of the lens.

In an exemplary embodiment, the second end face of the lower barrel 2 is provided with the aforementioned first reinforcing array 30, and the inactive areas of the lower barrel 2 and the first lens are bonded to each other by the adhesive 4 arranged around the first reinforcing array 30.

In the exemplary embodiment, the upper lens is located in the object-side direction of the lower barrel 2, the second end surface of the lower barrel 2 is provided with the first strengthening array 30, and the ineffective area of the image-side end surface of the upper lens is provided with the second strengthening array 31. Illustratively, the second end surface of the lower barrel 2 is provided with a first strengthening array 30, the ineffective area of the image side end surface of the upper lens is provided with a second strengthening array 31 and a third strengthening array, and the second strengthening array 31 and the third strengthening array are grooves recessed in the image side end surface of the upper lens. Illustratively, at least a portion of the groove of the ineffective area of the image side end surface of the upper lens extends to the outer periphery of the image side end surface of the upper lens. The provision of the reinforcing array of the image-side end surface of the upper lens as a groove facilitates processing, and in addition, prevents air bubbles from remaining in the groove when the adhesive 4 is applied.

The present application also provides an electronic device whose electronic photosensitive element may be a photosensitive coupled device (CCD) or a complementary metal oxide semiconductor device (CMOS). The electronic device may be a stand-alone camera device, such as a digital camera, or may be a camera module integrated on a mobile electronic device, such as a cell phone. The electronic device is equipped with the split lens described above.

The above description is only a preferred embodiment of the present application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of protection covered by the present application is not limited to the embodiments with a specific combination of the features described above, but also covers other embodiments with any combination of the features described above or their equivalents without departing from the technical idea described above. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.

Claims

1. A split lens, comprising:

a first barrel accommodating at least one lens; and

a second barrel adjacent to the first barrel, a second end face of the second barrel and a first end face of the first barrel facing each other, and the second barrel accommodating at least one lens;

the reinforced plastic pipe is characterized in that a reinforced array is arranged on at least one of the first end face and the second end face, and the reinforced array is a protrusion which is recessed in a groove of the at least one end face or protruded from the at least one end face and has a protruding distance smaller than the distance between the first end face and the second end face.

2. The split type lens according to claim 1, wherein the first barrel and the second barrel are bonded to each other by an adhesive disposed around the reinforcing array.

3. A split type lens according to claim 1, wherein the reinforcement arrays include first reinforcement arrays and second reinforcement arrays arranged alternately in a circumferential direction of the at least one end face.

4. A split lens according to claim 3, wherein the second reinforcement array is arranged inward in a radial direction of the at least one end surface than the first reinforcement array.

5. The split-type lens according to claim 4, characterized in that:

the first reinforcement array comprises a plurality of first arc-shaped single structures extending along the circumferential direction of the at least one end face and spaced apart from each other, and the first arc-shaped single structures are convex or concave from the at least one end face;

the second reinforcement array includes a plurality of second arcuate unitary structures extending and spaced apart in a circumferential direction of the at least one end face, the second arcuate unitary structures being convex or concave from the at least one end face.

6. A split-type lens according to claim 5, wherein each second arc-shaped single-body structure is arranged between two first arc-shaped single-body structures in a circumferential direction of the at least one end face.

7. The split-type lens according to claim 4, characterized in that:

the first reinforcement array comprises a plurality of first bar-shaped monolithic structures extending in a radial direction of the at least one end face and spaced apart in a circumferential direction of the at least one end face, the first bar-shaped monolithic structures being protruded or recessed from the at least one end face;

the second reinforcement array includes a plurality of second bar-shaped unit structures extending in a radial direction of the at least one end surface and spaced apart in a circumferential direction of the at least one end surface, the second bar-shaped unit structures being protruded or recessed from the at least one end surface.

8. A split-type lens according to claim 7, wherein each second bar-shaped single structure is arranged between two first bar-shaped single structures in a circumferential direction of the at least one end face.

9. A split-type lens according to claim 3, wherein:

the second reinforcement array includes a plurality of second bar-shaped unit structures extending in a radial direction of the at least one end surface and spaced apart in a circumferential direction of the at least one end surface, the second bar-shaped unit structures being protruded or recessed from the at least one end surface, and a length of the second bar-shaped unit structures being smaller than a length of the first bar-shaped unit structures.

10. A split lens according to claim 1, wherein the reinforcing array is a groove recessed in the at least one end surface, the groove extending to an outer periphery of the at least one end surface.

11. The split lens of claim 2, wherein the adhesive is a photo-curing adhesive, a thermal curing adhesive, a photo-thermal curing adhesive, or a moisture curing adhesive.

12. A split lens according to claim 1, wherein the reinforcing array is integrally formed with the at least one end surface.

13. The split lens of claim 1, wherein the first end surface and the second end surface include at least three flat regions corresponding to each other.

14. A split lens according to claim 13, wherein the at least three flat regions communicate with each other radially outside or inside the reinforcing array.

15. A split lens according to claim 13, wherein the at least three flat regions alternate with the grooves or protrusions of the reinforcing array.

16. An electronic device characterized in that the electronic device comprises the split-type lens according to any one of claims 1 to 15.

17. A method for manufacturing a split lens, the method comprising:

a first lens barrel accommodating at least one lens and a second lens barrel accommodating at least one lens are pre-positioned, a second end face of the second lens barrel and a first end face of the first lens barrel face each other, a reinforcing array is arranged on at least one of the first end face and the second end face, and the reinforcing array is a groove sunken in the at least one end face or a protrusion protruding out of the at least one end face and having a protruding distance smaller than the distance between the pre-positioned first end face and the second end face;

determining the relative position of the first lens barrel and the second lens barrel which are pre-positioned through active calibration;

applying an adhesive around the reinforcing array; and

curing the adhesive based on the relative position determined by the active calibration.

18. The method of manufacturing according to claim 17, further comprising:

before the pre-positioning, measuring the posture of the second lens barrel relative to the first lens barrel by using at least three flat areas between the first end surface and the second end surface.

19. The method of claim 17, wherein curing the adhesive based on the relative position determined by the active calibration comprises:

adjusting the first barrel and the second barrel to the relative position determined by the active calibration; and

curing the adhesive in the adjusted position.

20. The method of claim 19, wherein adjusting the first barrel and the second barrel to the relative positions determined by the active calibration comprises:

uniformly distributing the adhesive using movement of the first barrel relative to the second barrel during the adjustment.