CN205281002U

CN205281002U - Optical device fixing device and optical system

Info

Publication number: CN205281002U
Application number: CN201521099206.0U
Authority: CN
Inventors: 熊伟; 李屹
Original assignee: Shenzhen Yili Ruiguang Technology Development Co Ltd
Current assignee: Shenzhen Appotronics Corp Ltd; Shenzhen Appotronics Technology Co Ltd
Priority date: 2015-12-25
Filing date: 2015-12-25
Publication date: 2016-06-01
Anticipated expiration: 2025-12-25

Abstract

The utility model relates to an optical device fixing device and optical system, the optical device fixing device include: the optics support is equipped with first step hole, second step hole and third step hole that the radius increases progressively in proper order, the second step is used for block astigmatism piece, third step hole is used for the block lens, the spacer, the block is in in the third step hole, make the spacer with astigmatism piece with lens are laminated respectively, be equipped with the through -hole on the spacer, the shell fragment, with optics support fixed connection makes the shell fragment with the lens laminating. The utility model discloses can promote optics efficiency.

Description

The fixing device of optical device and optical system

Technical field

This utility model relates to field of optical systems, particularly relates to the fixing device of a kind of optical device and optical system.

Background technology

Optical system refers to the system being combined into by multiple optical elements such as lens, reflecting mirror, prism and diaphragms by a graded, is commonly used to imaging or does optical Information Processing. Traditional optical system is generally adopted the fixing scattering sheet of mode that shell fragment screws.

But, in order to improve optical efficiency, lens and a region plated film pitch of fins are close, adopt the shell fragment mode that scattering sheet is fixed that screws cannot meet light path small form factor requirements, thus causing that optical efficiency is not good.

Utility model content

Based on this, it is necessary to provide a kind of can the fixing device of optical device of improving optical efficiency.

Additionally, also provide for a kind of optical system.

The fixing device of a kind of optical device, including:

Optical bracket, is provided with first step hole, second step hole and the 3rd stepped hole that radius is incremented by successively, and described second step is used for engaging scattering sheet, and described 3rd stepped hole is used for engaging lens;

Partition, is fastened in described 3rd stepped hole, makes described partition fit respectively with described scattering sheet and described lens, and described partition is provided with through hole;

Shell fragment, fixes with described optical bracket and is connected, and makes described shell fragment and the laminating of described lens.

Wherein in an embodiment, described through hole be shaped as four rounded rectangles in angle, and described rectangular long limit is less than the diameter of described scattering sheet.

Wherein in an embodiment, described shell fragment is circular, and the internal diameter of described annulus is consistent with the diameter in described second step hole, and described projecting part and described annulus are one-body molded.

Wherein in an embodiment, described projecting part is multiple, and multiple described projecting part is evenly distributed on the inner periphery of described annulus.

Wherein in an embodiment, described shell fragment is lengthy motion picture shape, and one end of described lengthy motion picture is fixed on described optical bracket, and the other end of described lengthy motion picture is used for fitting described lens to apply pressure to described lens.

Wherein in an embodiment, the quantity of described shell fragment is multiple, and multiple described shell fragment is evenly distributed in the surrounding of described lens.

Wherein in an embodiment, described shell fragment is connected by fixture and described optical bracket are fixing.

Wherein in an embodiment, described fixture is screw.

Wherein in an embodiment, described first step hole, second step hole and the 3rd stepped hole concentrically axle so that the central point conllinear of described scattering sheet, partition, lens and shell fragment is arranged.

A kind of optical system, including the fixing device of above-mentioned optical device.

The fixing device of above-mentioned optical device and optical system, lens locking is pushed down by shell fragment, after locking, shell fragment pressure passes to scattering sheet by partition, thus reaching the purpose of fixing scattering sheet, the shell fragment mode that screws so additionally need not be adopted again to be directly anchored on support by scattering sheet, thus saving space and infrastructure cost, also it is effectively improved optical efficiency simultaneously.

Accompanying drawing explanation

Fig. 1 is the side schematic view of the fixing device of optical device in an embodiment;

Fig. 2 is the structural representation of partition in embodiment illustrated in fig. 1;

Fig. 3 is the front schematic view of the fixing device of optical device in embodiment illustrated in fig. 1.

Detailed description of the invention

Below in conjunction with accompanying drawing, detailed description of the invention of the present utility model is described in detail.

Refer to Fig. 1, for the side schematic view of the fixing device of optical device in one embodiment of this utility model.

The fixing device of optical device in the present embodiment includes optical bracket 110, partition 130 and shell fragment 150. The fixing device of described optical device may be used for the optical elements such as fixing scattering sheet, lens, optical filter, dichroic sheet. In the present embodiment, the fixing device of described optical device is used for fixing scattering sheet 120 and lens 140.

Specifically, optical bracket 110 is provided with first step hole 112, second step hole 114 and the 3rd stepped hole 116. Wherein, the radius in first step hole 112 is less than the radius in second step hole 114, and the radius in second step hole 114 is less than the radius of the 3rd stepped hole 116. Scattering sheet 120 is fastened in second step hole 114, and partition 130 is fastened in the 3rd step card 116 and fits with scattering sheet 120, and partition 130 is provided with through hole 132 (not shown in figure 1). Lens 140 are fastened in the 3rd stepped hole 116 and fit with partition 130, and the center of lens 140 is directed at the center of through hole 132 (not shown in figure 1). Shell fragment 150 is fitted on lens 140, and shell fragment 150 is fixing with optical bracket 110 to be connected. Light in lens 140 is penetrated by the 3rd stepped hole 112.

Meanwhile, incorporated by reference to Fig. 2, for the structural representation of partition in embodiment illustrated in fig. 1.

Through hole 132 be shaped as four rounded rectangles in angle, and described rectangular long limit is less than the diameter of scattering sheet 120. So, pressure can be passed in scattering sheet 120 by the pressure of shell fragment 150 by partition 130 entity part, thus reaching the purpose of fixing scattering sheet 120.

It addition, because being provided with partition 130, such lens 140 need not directly contact with scattering sheet 120, thus avoiding crushed risk.

Incorporated by reference to Fig. 3, for the front schematic view of the fixing device of optical device in embodiment illustrated in fig. 1.

Shell fragment 150 is circular, the internal diameter of described annulus and the diameter of the 3rd stepped hole 116 almost (can allow greatly a bit or a little bit smaller, as long as controlling its radius phase difference within the specific limits), the inner periphery of described annulus is additionally provided with projecting part 152, projecting part 152 and described annulus one-body molded. So, lens 140 can be locked by projecting part 152. Because shell fragment 150 is annular, it is excessive and crushed lens 140 can be avoided to bear pressure when shell fragment 150 locks lens 140.

In one embodiment, projecting part 152 is multiple, and multiple projecting part 152 is evenly distributed on the inner periphery of described annulus. So can make uniform stressed in scattering sheet 120, play stable effect.

Being appreciated that in other embodiments, all right lengthy motion picture shape of described shell fragment, one end of described lengthy motion picture is fixed on described optical bracket, and the other end of described lengthy motion picture is used for fitting described lens to apply pressure to described lens. When shell fragment is lengthy motion picture shape, the quantity of shell fragment is multiple, and multiple described shell fragment is evenly distributed in the surrounding of described lens. Further, shell fragment can also be other shapes, does not do strict restriction here, such as hollow triangle etc., as long as its pressure that can bear can be applied to lens 140, and pressure is passed to scattering sheet.

In one embodiment, shell fragment 150 is connected by fixture 154 is fixing with optical bracket 110. Fixture 154 is screw. Being appreciated that in other embodiments, fixture 154 can also be other any parts with fixation.

In one embodiment, first step hole 112, second step hole 114 and the 3rd stepped hole 116 concentrically axle so that the central point conllinear of scattering sheet 120, partition 130, lens 140 and shell fragment 150 is arranged. Here central point conllinear is that shell fragment 150 is regarded as an entirety, if such as shell fragment 150 lengthy motion picture shape, then multiple lengthy motion pictures are regarded as an entirety, the central point of this entirety is exactly the central point of shell fragment 150.

Also provide for a kind of optical system, including the fixing device of above-mentioned optical device. This optical system also includes such as the parts such as panel, light source, and its operation principle known by those skilled in the art, repeats no more here.

Each technical characteristic of embodiment described above can combine arbitrarily, for making description succinct, the all possible combination of each technical characteristic in above-described embodiment is not all described, but, as long as the combination of these technical characteristics is absent from contradiction, all it is considered to be the scope that this specification is recorded.

Embodiment described above only have expressed several embodiments of the present utility model, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to utility model patent scope. It should be pointed out that, for the person of ordinary skill of the art, without departing from the concept of the premise utility, it is also possible to make some deformation and improvement, these broadly fall into protection domain of the present utility model. Therefore, the protection domain of this utility model patent should be as the criterion with claims.

Claims

1. the fixing device of optical device, it is characterised in that including:

2. the fixing device of optical device according to claim 1, it is characterised in that described through hole be shaped as four rounded rectangles in angle, and described rectangular long limit is less than the diameter of described scattering sheet.

3. the fixing device of optical device according to claim 1, it is characterised in that described shell fragment is circular, the inner periphery of described annulus is additionally provided with projecting part, described projecting part and described annulus one-body molded.

4. the fixing device of optical device according to claim 3, it is characterised in that described projecting part is multiple, and multiple described projecting part is evenly distributed on the inner periphery of described annulus.

5. the fixing device of optical device according to claim 1, it is characterised in that described shell fragment is lengthy motion picture shape, and one end of described lengthy motion picture is fixed on described optical bracket, the other end of described lengthy motion picture is used for fitting described lens to apply pressure to described lens.

6. the fixing device of optical device according to claim 5, it is characterised in that the quantity of described shell fragment is multiple, and multiple described shell fragment is evenly distributed in the surrounding of described lens.

7. the fixing device of optical device according to claim 1, it is characterised in that described shell fragment is connected by fixture and described optical bracket are fixing.

8. the fixing device of optical device according to claim 7, it is characterised in that described fixture is screw.

9. the fixing device of optical device according to claim 1, it is characterised in that described first step hole, second step hole and the 3rd stepped hole concentrically axle so that the central point conllinear of described scattering sheet, partition, lens and shell fragment is arranged.

10. an optical system, it is characterised in that include the fixing device of the optical device described in any one of claim 1��9.