JP2532241Y2 - Electro-optical device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial application field) This invention relates to an electro-optical device in which a photoelectric conversion element such as a light emitting element and a light receiving element is fixed at a predetermined support position on a support member.

(Prior Art) In a photoelectric conversion element, for example, a semiconductor chip or a lead wire serving as a light emitting center or a light receiving center is integrally attached to one end of a terminal, and the light emitting center or the light receiving center is made of glass for protection. And a protective cover made of light transmitting resin. The protective cover is formed to have a predetermined outer shape, and a part of the outer surface is a flat surface so as to be a reference surface for positioning the photoelectric conversion element. Here, the relative position accuracy of the positioning reference plane with respect to the light emission center and light reception center on one end of the terminal is relatively low.

In a conventional electro-optical device, a support recess is formed at a predetermined support position of a support member, the support recess corresponding to substantially a half-circumferential portion of the outer peripheral surface including the positioning reference surface of the protective cover of the photoelectric conversion element. The outer peripheral surface including the positioning reference surface of the protective cover of the photoelectric conversion element is inserted into the support recess, and in this state, the photoelectric conversion element is fixed to a predetermined support position of the support member with an adhesive.

In another conventional electro-optical device, a protective cover for a photoelectric conversion element is attached to a support substrate at a positioning reference plane, and the photoelectric conversion element support substrate is raised at a predetermined support position of a support member. The outer peripheral edge is slid into the guide groove of the substrate supporting frame, and is fixed to a predetermined supporting position of the supporting member.

(Problem to be Solved by the Invention) In the former conventional example, it is difficult to replace the photoelectric conversion element. Also, when the photoelectric conversion element is used in combination with, for example, a condenser lens, it is assumed that the positioning reference surface of the outer peripheral surface of the protective cover of the photoelectric conversion element is precisely positioned at a desired position on the support member and fixed. However, the light emission center and the light reception center of the photoelectric conversion element are not always precisely positioned with respect to the desired position.

Also, the use of the adhesive not only complicates the assembly process of the electro-optical device but also deteriorates the working environment, and the time required for drying the adhesive is an obstacle to shortening the assembly time of the electro-optical device. .

In the latter conventional example, the exchange of the photoelectric conversion element is facilitated, but the difficulty in precisely positioning the light emission center and the light reception center of the photoelectric conversion element with respect to a desired position on the support member has not been solved. In addition, the photoelectric conversion element support substrate increases the number of components of the electro-optical device, and requires a time for mounting the photoelectric conversion element on the photoelectric conversion element support substrate.

The present invention has been made under the above circumstances, and an object of the present invention is to improve the positional accuracy of the light emitting center or the light receiving center of the photoelectric conversion element with respect to the support position of the support member, and to reduce the number of constituent members. It is an object of the present invention to provide an electro-optical device that not only can reduce the time required to attach a photoelectric conversion element to a support position of a support member, but also can improve the environment for assembly work.

(Means and Actions for Solving the Problems) In order to solve the above problems, an electro-optical device according to the present invention includes a light emitting element or a light receiving element having a plurality of terminals (14, 16) derived from its own main body. A conversion element (12), an optical member (24) for transmitting light emitted or received by the conversion element, and an optical member support (100) for supporting the optical member (24). Positioning means (32, 32) for positioning the conversion element (12) so as to regulate the displacement of the optical member (24) in a direction intersecting the optical axis while allowing the adjustment displacement in the direction along the optical axis; 32; 34,34) and the conversion element (12)
The conversion element supporting portion (20) provided with position fixing means (40, 54, 64) for fixing the position at the adjusted displacement position.
0) and a connection part (300) for integrally connecting the conversion element support part (200) and the optical member support part (100) such that the distance between the two parts is kept constant. And a support member (10, 50, 60) configured to include each part of the user.

(Embodiments) Various embodiments of the present invention will be described below in detail with reference to the accompanying drawings.

FIG. 1 shows a support member 10 of an electro-optical device according to a first embodiment of the present invention and a light emitting element 12 supported by the support member. In this embodiment, the light emitting element 12 has a pair of terminals 14 and 16, and a light emitting center is provided at one end of the pair of terminals 14 and 16 covered by a light transmitting resin portion 18 having a predetermined outer shape. (Not shown) and a lead wire are integrally provided.

A flat surface 22 is formed on a part of the outer peripheral surface of the flange 20 of the light transmitting resin portion 18 for positioning, and the rear end surface of the flange 20 is also formed flat.

The light-emitting element 12 having such a configuration can be very easily obtained on the market.

At one end of the upper surface of the support member 10 is formed an optical member support portion for vertically supporting a light transmitting member such as a convex lens 24 for condensing light. A photoelectric conversion element support portion having two steps 26 and 28 connected to the member support portion is formed. The height of the rear step 28 is higher than that of the front step 26, and the two steps 26, 28
Is a horizontal flat surface.

A support member is provided on the upper surface of the front step 26 at a position separated from the center of the convex lens 24 by a predetermined distance along the optical axis 30 of the convex lens 24.
A pair of first positioning projections spaced apart from each other in the width direction of 10
32 are formed. The pair of first positioning projections 32 are equally spaced from the optical axis 30 of the convex lens 24, respectively.
The distance between the inner ends of the pair of first positioning projections 32 is
Is larger than the outer diameter of the light transmitting resin portion 18 and smaller than the outer diameter of the flange 20.

A pair of second positioning projections 34 are formed on the upper surface of the rear step 28 along the optical axis 30 of the convex lens 24 so as to be separated from each other. Each of the pair of second positioning projections 34 Light emitting element
It has the same outer diameter as the width of the gap between the twelve pairs of terminals 14,16.

The upper surface of the rear step 28 further includes an optical axis 30 of the convex lens 24.
A screw hole 36 is formed between the pair of second positioning projections 34 directly below the second positioning projection 34.

With respect to the support member 10 configured as described above, the light-transmitting resin portion 18 of the light-emitting element 12 has a pair of first positioning protrusions 32 immediately before the flange 20 with the flat surface 22 facing downward. Sandwiched between. Here, the flange 20 of the light transmitting resin portion 18 is a pair of first positioning protrusions on the upper surface of the step 26 in front of the support member 10.
32, a step surface 38 between the front step 26 and the rear step 28.
A pair of second positioning projections 34 on the upper surface of the rear step 28 are inserted into the gap between the pair of terminals 14 and 16.

When the pair of terminals 14 and 16 of the light emitting element 12 abut on the upper surface of the step 28 behind the supporting member 10, the light emitting center of the light emitting element 12 is aligned with the optical axis 30 of the convex lens 24 as shown in FIG. The head screw 40, which is concentric with the head and has electrical insulation, is connected to the support member 1 through a gap between the pair of terminals 14 and 16 of the light emitting element 12.
The large-diameter head is screwed into the screw hole 36 on the upper surface of the step 28 behind the 0, and the large-diameter head is in contact with the upper surface of the pair of terminals 14 and 16.

Since the distance from each of the pair of first positioning projections 32 to the step surface 38 is set to be larger than the dimension of the flange 20 of the light transmitting resin portion 18 of the light emitting element 12 in the direction along the optical axis 30. If the head screw 40 that fixes the pair of terminals 14 and 16 of the light emitting element 12 is slightly loosened, the light emitting element 12
It can be moved along the optical axis 30 on the upper surface of the support member 10 until it comes into contact with the pair of first positioning projections 32 or the step surface 38. This allows the emission center of the light emitting element 12 to be a convex lens
It can be precisely positioned at a desired position with respect to 24 focal points.

To summarize the configuration of the support member 10 described above, the support member 10 moves the optical member support portion 100 for supporting the convex lens 24 as an optical member, and the light emitting element 12 as a conversion element in a direction along the optical axis of the convex lens 24. Positioning means (a pair of first positioning projections 3) for positioning so as to restrict the displacement in the direction intersecting the optical axis while allowing the adjustment displacement of
2, 32, and a pair of second positioning projections 34, 34) and a conversion device provided with position fixing means (head screw 40) for fixing the light emitting element 12 at the adjusted and displaced position. Element support portion 200, and a connection portion 300 for integrally connecting the conversion element support portion 200 and the optical member support portion 100 such that the distance between them is maintained constant. It can be said that it is composed.

If the head screw 40 is tightened again, the support member 10
The position of the light emitting element 12 on the upper surface of the light emitting device is fixed, and as a result, the state as shown in FIG. 2 is obtained. That is, the headed screw 40 is a convex lens 24 (light transmitting member) on the support member 10.
After adjusting the position of the light emitting element 12 along the optical axis 30 of the light emitting element
It functions as a position fixing means for fixing the 12 on the support member 10.

FIG. 3 shows a state before assembling of the electro-optical device according to the second embodiment of the present invention, in which the first embodiment of the present invention shown in FIGS. 1 and 2 is shown. The same reference numerals are given to the same constituent members as those of the embodiment, and the detailed description of the constituent members is omitted.

In this embodiment, the above-described first positioning member 34 is provided between the pair of second positioning projections 34 on the upper surface of the step portion 28 behind the supporting member 50.
Instead of the screw hole 36 in the embodiment, a heat caulking protrusion 52 formed of a synthetic resin having substantially the same size and shape as the second positioning protrusion 34 is formed. In this embodiment, the entire support member 50 including the heat caulking projection 52 and the first and second positioning projections 32 and 34 is integrally formed of a synthetic resin.

As in the case of the first embodiment described above, the light emitting element 12 has the outer peripheral surface of the light transmitting resin portion 18 immediately before the flange 20 with the flat surface of the light transmitting resin portion 18 facing downward. Front step 26
The stepped portion 2 behind the support member 50 is sandwiched between the pair of first positioning projections 32 above, and is inserted into the gap between the pair of terminals 14 and 16.
The pair of second positioning protrusions 34 and the heat caulking protrusions 52 on 8 are inserted. Here, a pair of terminals 1 of the light emitting element 12
The light-emitting element 12 is brought into contact with the upper surface of the step 28 behind the support member 50 so that the light-emitting element 12
The enlarged diameter portion 54 as a position fixing means formed by being concentrically arranged with respect to 30 and being pressed downward by a heating means (not shown) as shown in FIG. The light emitting element 12 on the upper surface of the support member 10 is brought into contact with the upper surface of the pair of terminals 14 and 16 of FIG.
Is fixed. That is, the heat caulking protrusion 52 is a support member.
After adjusting the position of the light emitting element 12 along the optical axis 30 of the convex lens 24 (light transmitting member) on the 50, the light emitting element 12 is
It functions as a position fixing means for fixing on top.

FIG. 5 shows a state before the assembling of the electro-optical device according to the third embodiment of the present invention, in which the first embodiment of the present invention shown in FIGS. 1 and 2 is shown. The same reference numerals are given to the same constituent members as those of the embodiment, and the detailed description of the constituent members is omitted.

In this embodiment, the above-described first positioning member 34 is provided between the pair of second positioning projections 34 on the upper surface of the step portion 28 behind the supporting member 60.
A groove 62 extending in the width direction of the support member 60 is formed instead of the screw hole 36 in the embodiment. On the bottom of the groove 62,
A pair of elastic engaging projections at positions spaced apart from each other in the width direction.
64 are formed. The distance between the opposing surfaces of the pair of elastic engaging projections 64 as the position fixing means is a pair of terminals of the light emitting element 12.
Slightly less than the distance between the outer edges of the respective 14,16, the pair of terminals 14,16 is symmetrical with respect to the optical axis 30. A pair of terminals 14,
The upper end of 16 protrudes above the upper surface of the step 28 behind the support member 60, and the upper end is formed with an engaging claw 66 protruding in a direction approaching each other. A pair of engaging claws 66
Has an inclined surface 68 which is inclined so as to be separated from each other as going upward. In this embodiment, a pair of elastic engagement projections 64 and first and second positioning projections 3 are used.
The entire support member 60 including the members 2, 34 is integrally formed of synthetic resin.

As in the case of the above-described first embodiment, the light emitting element 12 has the outer peripheral surface of the light transmitting resin portion 18 immediately before the flange 20 with the flat surface of the light transmitting resin portion 18 facing downward. Front step 26
The stepped portion 2 behind the support member 60 is sandwiched between the pair of first positioning protrusions 32 and is provided in the gap between the pair of terminals 14 and 16.
The pair of second positioning protrusions 34 on the upper side 8 are inserted. Here, the pair of terminals 14 and 16 of the light emitting element 12 are brought into contact with the upper surface of the step 28 behind the supporting member 50 so that the light emitting element 12
Are arranged concentrically with respect to the optical axis 30 of the convex lens 24 on the support member 60. The outer edges of the pair of terminals 14 and 16 of the light emitting element 12 abut from above on the inclined surfaces 68 of the pair of elastic projections 64 of the support member 60 to apply the pair of elastic engagement projections 64 to these elastic forces. After being pushed outward to oppose, it engages with the engagement claws 66 of the pair of elastic engagement projections 64 as shown in FIG. This engagement fixes the position of the light emitting element 12 on the upper surface of the support member 10.

The movement of the position of the light emitting element 12 on the upper surface of the support member 60 in the direction along the optical axis 30 pushes the pair of terminals 14 and 16 apart from each other against the elasticity of the elastic engaging projection 64. It can be done by doing. That is, a pair of elastic engagement projections
Reference numeral 64 denotes a light emitting element 12 after adjusting the position of the light emitting element 12 along the optical axis 30 of the convex lens 24 (light transmitting member) on the support member 60.
Functions as a position fixing means for fixing on the support member 60.

The various embodiments described above are for explaining the present invention, and do not limit the present invention, and all modifications and alterations within the technical scope of the present invention are included in the present invention. Needless to say.

For example, in the first embodiment of the present invention shown in FIGS. 1 and 2, the screw hole 36 on the upper surface of the step 28 behind the support member 10 is a mere hole having no female screw,
A headed pin may be pressed into this instead of the headed screw 40.

Further, instead of the light emitting element 12, light receiving elements having the same shape can be used, and the number of terminals of these light emitting elements and light receiving elements may be two or more.

(Effects of the Invention) As described in detail above, the electro-optical device according to the invention includes a plurality of terminals provided on a light emitting element or a light receiving element.
Since the light-emitting element or the light-receiving element is fixed to the support member by screwing, caulking, or fitting to the support member, the light-emitting element or the light-receiving element is provided at one end of the terminal of the photoelectric conversion element with respect to the support position of the support member. The relative position accuracy of the light-emitting center or light-receiving center can be set extremely precisely, and a component that must be manufactured separately is not required, and the photoelectric conversion element with respect to the support position of the support member is not required. The mounting time is almost one-touch, and the environment for the assembling work can be improved because no adhesive is used.

[Brief description of the drawings]

FIG. 1 is a perspective view schematically showing a state before a supporting member of an electro-optical device and a light-emitting element, which is one kind of a photoelectric conversion element, are combined with each other according to a first embodiment of the present invention; FIG. 2 is a perspective view schematically showing a state after the support member and the light emitting device of FIG. 1 are combined with each other; FIG. 3 is an electro-optic device according to a second embodiment of the present invention. FIG. 4 is a perspective view schematically showing a state before a supporting member of the device and a light emitting element which is one kind of photoelectric conversion element are combined with each other; FIG. 4 shows that the supporting member and the light emitting element of FIG. FIG. 5 is a perspective view schematically showing a state after the combination; FIG. 5 is a diagram showing a support member of the electro-optical device according to the third embodiment of the present invention and a light emitting element which is a kind of photoelectric conversion element; Perspective view schematically showing a state before being combined with;
FIG. 6 is a plan view schematically showing a state in which a part of the support member and the light emitting element of FIG. 10 support member, 12 light-emitting element, 14, 16 terminal, 18
... Light-transmitting resin portion, 20..., 22... Flat surface, 24... Convex lens, 26, 28... Step portion, 30... Optical axis, 32. 2, positioning projections, 36 screw holes, 38 step surfaces, 40 headed screws, 50 supporting members, 52 heat caulking projections, 54 enlarged diameter portions, 60 support projections, 62 ... groove, 64 ... elastic engagement protrusion, 66 ... engagement claw,
68 …… Slope.

Claims (1)

(57) [Scope of request for utility model registration] 1. A conversion element which is a light emitting element or a light receiving element having a plurality of terminals derived from its own main body, an optical member for transmitting light emitted or received by the conversion element, and this optical member. An optical member supporting portion for supporting the conversion element, and positioning the conversion element so as to regulate the displacement in a direction intersecting the optical axis while allowing the adjustment displacement in a direction along the optical axis of the optical member. A conversion element support portion provided with a positioning means and a position fixing means for fixing the conversion element at the position where the adjustment displacement has been performed, and the conversion element support portion and the optical member support portion between the two portions. A support member including each of three parts of a connecting part that is integrally connected so that the distance is maintained constant.