CN100445791C

CN100445791C - Manufacturing method of lens module of digital camera

Info

Publication number: CN100445791C
Application number: CNB2004100508763A
Authority: CN
Inventors: 蔡明江; 江宗韦; 李俊佑
Original assignee: Hongfujin Precision Industry Shenzhen Co Ltd; Hon Hai Precision Industry Co Ltd
Current assignee: Hongfujin Precision Industry Shenzhen Co Ltd; Hon Hai Precision Industry Co Ltd
Priority date: 2004-07-24
Filing date: 2004-07-24
Publication date: 2008-12-24
Anticipated expiration: 2024-07-24
Also published as: CN1725050A

Abstract

The present invention relates to a making method for a digital camera lens module, which comprises procedures as follows: a plurality of optics, a plurality of spacer rings and an ejection forming mould are provided. The mould comprises a mould cavity and two mould cores arranged in the mould cavity, wherein the optics and the spacer rings are arranged on a mould core in the mould cavity. The spacer rings are arranged among the optics in interval. The matched mould causes the other mould core to press the optic for injecting plastics. Curing plastics are arranged outside the optic and the spacer ring, and the mould can be opened to take out the digital camera lens module.

Description

The digital camera lens module making method

[technical field]

The invention relates to a kind of manufacture method of digital camera lens module, especially about a kind of integrate shaped type digital camera lens module making method.

[background technology]

Along with Development of Multimedia Technology, digital camera, video camera more and more are consumers in general's favor, when people's logarithmic code camera, video camera are pursued miniaturization, its quality of image of shooting object is also proposed higher requirement, the image frame of promptly wishing shot object is clear, the image quality of object is in the quality that depends on each optical module in the digital camera to a great extent, and the manufacturing course of each optical module also can influence its optical property.

General mobile phone all adopts the assembly type manufacture method with the digital camera lens module, digital camera lens module as shown in Figure 1, lens barrel 10 is cylindric, one end is a semi-closed state, its middle part offers circular entrance window 11, the other end is open fully, during encapsulation, with eyeglass 12, spaced ring 13 and eyeglass 14 are respectively from the lens barrel 10 wide-open ends lens barrel 10 of packing into successively, spaced ring 13 both sides contact with eyeglass 12 and eyeglass 14 respectively, it is in order to the distance of 14 on control eyeglass 12 and eyeglass, wherein, and eyeglass 12, the edge of spaced ring 13 and eyeglass 14 all scribbles glue to be adhesively fixed with lens barrel 10.But this digital camera lens module is owing to adopt the assembly type manufacture method, and the tolerance of each several part part and assembling error easily cause producing problems such as eccentricity of glasses lens and eyeglass be crooked, thereby influences the optical property of this digital camera lens module.In addition, when this digital camera lens module carries out the reliability test, by the degasification phenomenon of

eyeglass

12,14 and shading

ring

13 and 10 glue that are adhesively fixed of lens barrel, make the opticator generation of

eyeglass

12,14 dirty easily, and then influence the optical property of digital camera lens module.

In view of this, provide a kind of and adopt that to reduce camera lens assembling tolerance and avoid producing dirty digital camera lens module making method by glue degasification phenomenon be necessary in fact.

[summary of the invention]

The object of the present invention is to provide and a kind ofly can reduce camera lens assembling tolerance and avoid producing dirty digital camera lens module making method by glue degasification phenomenon.

Digital camera lens module making method of the present invention, it may further comprise the steps: a plurality of eyeglasses are provided, a plurality of shading rings and an ejection shaping die, the corresponding snap-in structure that is provided with on described eyeglass and the shading ring, this mould includes a die cavity and is located at its two interior dies, eyeglass and shading ring are positioned in the die cavity on the die, and the eyeglass interbody spacer has shading ring, the snap-in structure of eyeglass and shading ring cooperatively interacts, matched moulds is so that another die compresses eyeglass, injection of plastic, hardened plastic is outside eyeglass and shading ring, and die sinking is also taken out the digital camera lens module.

Compare prior art, digital camera lens module of the present invention is by integrated manufacture, it reduces manufacturing process to reduce eccentricity of glasses lens and the crooked phenomenon that the assembling tolerance produces, and owing to do not need to use glue to fix, that can avoid that degasification phenomenon by glue causes is dirty, improved the optical property of this digital camera lens module, and simple in structure, ease of assembly.

[description of drawings]

Fig. 1 is the cut-open view of existing digital camera lens module;

Fig. 2 is the digital camera lens module cut-open view according to digital camera lens module making method of the present invention manufacturing;

Fig. 3 is the manufacturing synoptic diagram of digital camera lens module making method of the present invention.

[embodiment]

Please refer to shown in Figure 2ly, digital camera lens module of the present invention comprises lens barrel 20, eyeglass 22, shading ring 24 and eyeglass 26.

Lens barrel 20 is cylindric, and it is a plastic material, and accommodating fixing in the lens barrel 20 has eyeglass 22, shading ring 24 and eyeglass 26.Eyeglass 22 comprises optic 221 and substrate 222.Optic 221 is positioned at the middle part of substrate 222, and it is non-dome shape.Be equipped with locating slot 223 on the two sides of substrate 222, it is that the optical axis with optic 221 is the circle shape groove at center.Eyeglass 26 comprises optic 261 and substrate 262.Optic 261 is positioned at the middle part of substrate 262, and it is non-dome shape.Be equipped with locating slot 263 on the two sides of substrate 262, it is that the optical axis with optic 261 is the circle shape groove at center, and identical with locating slot 223 sizes.Shading ring 24 is to have a certain thickness annulus, and it is used to limit the distance of 26 on eyeglass 22 and eyeglass, so that the optical effect the best after the combination of two eyeglasses.Shading ring 24 middle parts have a circular hole 241, and the diameter of this circular hole 241 makes shading ring 24 can not influence the optical property of optic 221 and optic 241 greater than the diameter of optic 221 and optic 241.Be equipped with projection 242 on shading ring 24 both ends of the surface, it is that the central shaft with shading ring 24 is the annular protrusions at center, and matches with locating slot 223 and locating slot 263 and can engage with locating slot 223 and locating slot 263 in its

position.Eyeglass

22,26 all adopts glass mirror, and shading ring 24 adopts hard material, all elastic deformation can not take place when being squeezed.

Please refer to shown in Figure 3, digital camera lens module making method of the present invention may further comprise the steps: at first, eyeglass 22, shading ring 24 and eyeglass 26 are positioned on the die 30 in the die cavity 401 of mould 40, and the projection 242 on shading ring 24 two sides engages with locating slot 223, the locating slot 263 that eyeglass 22 and eyeglass 26 are in contact with it on the face respectively, and die 30 engages with another locating slot 263 of eyeglass 26; Close die 40 makes another die 30 compress eyeglass 22 and engages with its another locating slot 223, and it is pressed on eyeglass 22, spaced ring 24 and eyeglass 26 together, make eyeglass 22, spaced ring 24 and eyeglass 26 around closely contact do not have the space.Wherein, the die cavity 401 of described mould 40 is cylindric, die 30 is the round platforms that protrude in middle part, die cavity 401 two ends, its end face is provided with concave surface 301, this concave surface 301 is used for the optic 221 of ccontaining eyeglass 22 or the optic 261 of eyeglass 26, and its edge can fasten with the locating slot 223 of eyeglass 22 or the locating slot 263 of eyeglass 26.Injected plastic in the die cavity 401 of mould 40 promptly forms lens barrel 20 with plastics solidification then, can die sinking take out prepared digital camera lens module after the cooling.The eyeglass 22 of this digital camera lens module, shading ring 24 and eyeglass 26 all embed the inwall of lens barrel 20.

Claims

1. digital camera lens module making method is characterized in that may further comprise the steps:

A plurality of eyeglasses, a plurality of shading ring and an ejection shaping die are provided, and the corresponding snap-in structure that is provided with on described eyeglass and the shading ring, this mould include a die cavity and two dies located therein;

On the stacked die putting into die cavity of eyeglass and shading ring, and shading ring is arranged between eyeglass, the snap-in structure of eyeglass and shading ring cooperatively interacts;

Matched moulds makes another die of mould compress eyeglass;

Injection of plastic, and make plastics solidification outside eyeglass and shading ring;

Die sinking is also taken out the digital camera lens module.

2. digital camera lens module making method as claimed in claim 1 is characterized in that: described eyeglass adopts glass material, and described shading ring adopts hard material, and elastic deformation does not all take place when it is squeezed.

3. digital camera lens module making method as claimed in claim 1 is characterized in that: described snap-in structure is locating slot and the projection that cooperatively interacts.

4. digital camera lens module making method as claimed in claim 3 is characterized in that: described locating slot is located at the two sides of eyeglass, and this locating slot is to be the circle shape groove at center with the lens light axis.

5. digital camera lens module making method as claimed in claim 4 is characterized in that: described projection is located at the two sides of shading ring, and this projection is to be the annular protrusions at center with the shading ring center, and matches with the locating slot of eyeglass in its shape and position.

6. digital camera lens module making method as claimed in claim 4 is characterized in that: described die is the round platform with concave surface that is positioned at middle part, die cavity two ends, and the edge of its end face can engage with the locating slot of eyeglass.

7. digital camera lens module making method as claimed in claim 4 is characterized in that: described eyeglass comprises optic and substrate, and described locating slot is located on the substrate of eyeglass.