CN202305957U

CN202305957U - Structure for realizing precise control on air gaps of optical elements

Info

Publication number: CN202305957U
Application number: CN2011204179648U
Authority: CN
Inventors: 阮志展
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-10-28
Filing date: 2011-10-28
Publication date: 2012-07-04
Anticipated expiration: 2021-10-28

Abstract

The utility model relates to a structure for realizing precise control on air gaps of optical elements. The structure is characterized in that the glue water mixed with a hard material with precise thickness is arranged at an edge between the surfaces of two optical elements so as to realize precise consistency of the air gaps between the two opposite surfaces. In the structure provided by the utility model, by mixing the hard material with precise thickness in the glue water, the precise control on the air gaps between the surfaces of the two optical elements is ensured, and the performance of optical devices is improved.

Description

Realize the accurately structure of control of optical element clearance

Technical field:

The utility model relates to a kind of accurately structure of control of optical element clearance that realizes.

Background technology:

The optical module of being made up of the relatively-stationary element in position is parts the most basic in the optical system. situation about being closely linked for two element A0 of needs; Normally use optical glue A2 directly glued together relative two planes or curved surface. but for some special light paths and more high performance requirement such as higher transmitance or damage threshold; Then requiring in the middle of the light path is air-gap, does not promptly have glue.

Fig. 1 and Fig. 2 are about the two kind prior aries of assembling with the optical module of small clearance. like Fig. 1 is that two elements are approaching as far as possible; Pasting thin slice A1 then on the two sides fixes. and like Fig. 2 is around two surfaces of needs bonding, to coat certain thickness glue A2; After the glue curing two elements are bonded together the certain thickness air-gap of middle simultaneously formation.

More than existing two kinds of technology accurate control air crack of all having no way reach desired thickness, so can't realize optimum optical properties.

Summary of the invention:

The purpose of the utility model is to provide a kind of accurately structure of control of optical element clearance that realizes, this scientific structure design is reasonable, helps realizing the accurate control of optical element clearance.

The utility model is realized the accurately structure of control of optical element clearance, and it is characterized in that: the glue that is mixed with the precise thickness adamant is laid at the edge between two optical element faces and face, and is accurately consistent to realize the clearance between two opposite faces.

Above-mentioned optical element can be optical prism, plain film or lens.

The material of above-mentioned optical element can be optical glass, crystal or optical plastic.

Above-mentioned adamant is the square with precise thickness, thin bar or little ball.

Above-mentioned square, thin bar or little ball are to be processed by metal, glass, pottery or rigid plastic.

Above-mentioned between two optical element faces and face the edge at edge be laid with the glue that mixes adamant; Also can be laid with the glue that mixes adamant with whole edge between the face at two optical element faces.

Above-mentionedly on the two sides of said two optical elements, be pasted with thin slice, to increase the fastness that two optical elements connect.

Face between above-mentioned two optical elements is the plane.

Face between above-mentioned two optical elements is a curved surface.

The utility model passes through in glue, to mix the adamant of precise thickness, thereby has guaranteed the accurate control of clearance between two optical element faces and the face.

Description of drawings:

Fig. 1 is a kind of structure in existing optical element control air gap;

Fig. 2 is the another kind of structure in existing optical element control air gap;

Fig. 3 a is a kind of structure in the utility model optical element control air gap;

Fig. 3 b is the A-A cut-open view of Fig. 3 a;

Fig. 4 a is the another kind of structure in the utility model optical element control air gap;

Fig. 4 b is the B-B cut-open view of Fig. 4 a;

Fig. 5 is the instance graph that a kind of PBS prism is used the utility model structure;

Fig. 6 is the instance graph that another kind of PBS prism is used the utility model structure;

Fig. 7 is the instance graph that the third PBS prism is used the utility model structure;

Fig. 8 is the instance graph that the Glan crystal prism is used the utility model structure;

Fig. 9 is the instance graph that the TIR glass prism is used the utility model structure.

Embodiment:

The utility model is realized the accurately structure of control of optical element clearance, and the glue 3 that is mixed with precise thickness adamant 2 is laid at the edge between 1 of two optical element and face, and is accurately consistent to realize the clearance between two opposite faces.

Above-mentioned optical element can be optical prism, plain film or lens etc.

Above-mentioned optical element can be optical glass, crystal or optical plastic etc.

Above-mentioned adamant 2 is the square with precise thickness, thin bar or roundlet pearl etc., and the thickness of this adamant is selected as requested, and scope can be 1-30um.

Above-mentioned square, thin bar or little ball are to be processed by hard materials such as metal, glass, pottery or rigid plastic.

Accurately the structure of the clearance between control two optical element faces and the face can be laid with the glue 3 (as shown in Figure 3) that mixes adamant at the edge 4 at edge between two optical element faces and the face; Also can be laid with the glue (as shown in Figure 4) that mixes adamant with whole edge 5 between the face at two optical element faces.

For increasing the fastness that two optical elements connect, the above-mentioned thin slice 6 that on the two sides of said two optical elements, is pasted with.

Face between above-mentioned two optical elements is the plane or all can for curved surface.

The utility model passes through in glue, to mix the adamant of precise thickness, thereby has guaranteed the accurate control of clearance between two optical element faces and the face, has improved the performance of optical device.

Claims

1. realize the accurately structure of control of optical element clearance for one kind, it is characterized in that: the glue that is mixed with the precise thickness adamant is laid at the edge between two optical element faces and face, and is accurately consistent to realize the clearance between two opposite faces.

2. realization optical element according to claim 1 clearance is the structure of control accurately, and it is characterized in that: said optical element is optical prism, plain film or lens.

3. realization optical element according to claim 1 clearance is the structure of control accurately, and it is characterized in that: the material of said optical element is optical glass, crystal or optical plastic.

4. the structure of accurately controlling according to claim 1,2 or 3 described realization optical element clearances is characterized in that: said adamant is the square with precise thickness, thin bar or little ball.

5. realization optical element according to claim 4 clearance is the structure of control accurately, it is characterized in that: said square, thin bar or little ball are to be processed by metal, glass, pottery or rigid plastic.

6. realization optical element according to claim 5 clearance is the structure of control accurately, it is characterized in that: the edge at edge is laid with the glue that mixes adamant between two optical element faces and face.

7. realization optical element according to claim 5 clearance is the structure of control accurately, it is characterized in that: be laid with the glue that mixes adamant at two optical element faces with whole edge between the face.

8. according to the structure of the accurate control of claim 6 or 7 described realization optical element clearances, it is characterized in that: on the two sides of said two optical elements, be pasted with thin slice, to increase the fastness that two optical elements connect.

9. realization optical element according to claim 8 clearance is the structure of control accurately, and it is characterized in that: the face between said two optical elements is the plane.

10. realization optical element according to claim 8 clearance is the structure of control accurately, and it is characterized in that: the face between said two optical elements is a curved surface.