CN220154673U - Holographic diffraction grating - Google Patents

Abstract

The utility model discloses a holographic diffraction grating, which comprises a base, wherein an installation seat is fixed on the upper surface of the base, a protection frame is fixedly arranged on the upper end of the installation seat, diffraction sheets are arranged in the protection frame, and two first limiting components penetrate through two sides of the installation seat. The utility model provides a protection frame, a diffraction sheet, a sponge layer, a sliding rail, a positioning part, a second limiting component and a first limiting component, wherein the first limiting component comprises a connecting rod, a limiting plate, a first handle and a spring, the diffraction sheet is inserted into the protection frame, the second limiting component is used for limiting and fixing the diffraction sheet at the bottom of the protection frame, the first handle is pushed, the first limiting component slides up and down along the sliding rail, the sponge layer is used for cleaning dust on the surface of the diffraction sheet, when the sponge layer slides to the positioning part, the two limiting plates clamp the diffraction sheet, and the spring is compressed and generates larger friction force with the inner wall of the protection frame to enable the first limiting component to be fixed at the upper part of the protection frame to limit and fix the diffraction sheet, and the diffraction sheet is replaced in the same way.

Description

Holographic diffraction grating

Technical Field

The utility model relates to the technical field of gratings, in particular to a holographic diffraction grating.

Background

The optical holographic technology mainly uses the optical coherence superposition principle, namely simply by adjusting complex terms (time terms), so that the peak value of two light wave trains is superposed, and the peak Gu Diejia is obtained, thereby achieving the technology that the coherent field has higher contrast. Holographic gratings have the advantages of less stray light, high diffraction efficiency, good wavelength and angle selectivity and the like, so that the holographic gratings gradually replace the traditional ruling gratings in various fields, and the gratings can be divided into reflection type holographic gratings and transmission type holographic gratings according to the diffraction direction of the reappeared light beams and the vector direction of the gratings.

In the prior art, the diffraction sheet is generally fixedly arranged in the protection frame, so that the diffraction sheet is inconvenient to replace and dust on the surface of the diffraction sheet is inconvenient to clean, and therefore, a holographic diffraction grating is provided.

Disclosure of Invention

The utility model aims to provide a holographic diffraction grating to solve the problems that in the prior art, a diffraction sheet is inconvenient to replace and dust on the surface of the diffraction sheet is inconvenient to clean.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a holographic diffraction grating, includes the base, fixed surface has the mount pad on the base, the mount pad upper end has set firmly the guard frame, the inside diffraction piece that is provided with of guard frame, and the mount pad both sides pass there are two first spacing subassemblies, first spacing subassembly is including the connecting rod that passes the guard frame both sides, the connecting rod both ends are fixed with limiting plate and first handle respectively, and the position cover that the connecting rod surface is located between limiting plate and the guard frame is equipped with the spring, limiting plate one side is fixed with the sponge layer, the slide rail that corresponds with the limiting plate position has been seted up to the guard frame both sides, and the guard frame upper end is equipped with the location portion, and the guard frame lower part is provided with second spacing subassembly.

Preferably, the second limiting component comprises a threaded rod in threaded connection with the protection frame, one end of the threaded rod, which is positioned outside the protection frame, is fixedly provided with a second handle, and the other end of the threaded rod is connected with a limiting block through a bearing.

Preferably, a first limit groove corresponding to the second handle position is formed in the protection frame.

Preferably, a rubber layer is fixed on one side of the limiting block.

Preferably, a second limit groove corresponding to the diffraction plate is formed in the bottom of the protection frame.

Preferably, supporting legs are fixed at four corners of the lower surface of the base, and reinforcing rods are fixed between the supporting legs.

Compared with the prior art, the utility model has the beneficial effects that:

the utility model is provided with a protection frame, a diffraction sheet, a sponge layer, a sliding rail, a positioning part, a second limiting component and a first limiting component, wherein the first limiting component comprises a connecting rod, a limiting plate, a first handle and a spring, the diffraction sheet is inserted into the protection frame, the second limiting component limits and fixes the diffraction sheet at the bottom of the protection frame, the first handle is pushed, the first limiting component slides up and down along the sliding rail, the sponge layer cleans dust on the surface of the diffraction sheet, when the diffraction sheet slides to the positioning part, the two limiting plates clamp the diffraction sheet, and the spring compresses and generates larger friction force with the inner wall of the protection frame to enable the first limiting component to be fixed at the upper part of the protection frame to limit and fix the diffraction sheet, and the diffraction sheet is replaced in the same way.

Drawings

The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model. In the drawings:

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic view of the internal structure of the protection frame of the present utility model;

FIG. 3 is an enlarged schematic view of the portion A of the present utility model;

fig. 4 is an enlarged view of the B part of the present utility model.

In the figure: 1. a base; 2. a mounting base; 3. a protective frame; 4. a diffraction sheet; 5. a first limit assembly; 51. a connecting rod; 52. a limiting plate; 53. a first handle; 54. a spring; 6. a sponge layer; 7. a slide rail; 8. a positioning part; 9. the second limiting component; 91. a threaded rod; 92. a limiting block; 93. a second handle; 10. a rubber layer; 11. a first limit groove; 12. the second limit groove; 13. support legs; 14. and a reinforcing rod.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1, in an embodiment of the present utility model, a holographic diffraction grating includes a base 1, support legs 13 are fixed at four corners of the lower surface of the base 1, the support legs 13 are used for supporting the base 1, reinforcing rods 14 are fixed between the support legs 13, and the reinforcing rods 14 are used for reinforcing stability of the support legs 13;

referring to fig. 1-3, an installation seat 2 is fixed on the upper surface of a base 1, the installation seat 2 is used as a supporting seat of a protection frame 3, the protection frame 3 is more stable, the protection frame 3 is fixedly arranged at the upper end of the installation seat 2, the protection frame 3 is used for protecting a diffraction sheet 4, the diffraction sheet 4 is arranged in the protection frame 3, two sides of the installation seat 2 are penetrated with two first limiting components 5, the first limiting components 5 limit the installation of the diffraction sheet 4, each first limiting component 5 comprises a connecting rod 51 penetrating through two sides of the protection frame 3, two ends of each connecting rod 51 are respectively fixed with a limiting plate 52 and a first handle 53, the positions, between the limiting plates 52 and the protection frame 3, of the outer surfaces of the connecting rods 51 are sleeved with springs 54, the connecting rods 51 are driven to slide upwards along slide rails 7 by moving the first handles 53, a sponge layer 6 is fixed on one side of the limiting plates 52, dust on the surface of the diffraction sheet 4 is cleaned by the sponge layer 6, slide rails 7 corresponding to the positions of the limiting plates 52 are arranged on two sides of the protection frame 3, and the upper end of the protection frame 3 is provided with a positioning part 8, when the two limiting plates 52 are slid to the positioning part 8, the two limiting plates 52 clamp the diffraction sheet 4, the two limiting plates 54 and the protection frame 3 are clamped with the first limiting springs and the protection frame 3, so that the diffraction sheet 4 is compressed and fixed on the protection frame 3, and the upper part is clamped and clamped by the first positioning part 5, and the friction part is realized, so that is clamped and clamped to the diffraction is clamped and clamped to the upper friction part 3 is compressed;

referring to fig. 1, 2 and 4, a second limiting component 9 is disposed at the lower part of the protection frame 3, the second limiting component 9 is used for limiting and fixing the installation of the diffraction plate 4, the second limiting component 9 includes a threaded rod 91 in threaded connection with the protection frame 3, one end of the threaded rod 91 located outside the protection frame 3 is fixed with a second handle 93, the other end of the threaded rod 91 is connected with a limiting block 92 through a bearing, and the threaded rod 91 drives the limiting block 92 to move towards the diffraction plate 4 by rotating the second handle 93 until the two limiting blocks 92 clamp the diffraction plate 4;

referring to fig. 4, a first limiting groove 11 corresponding to the position of the second handle 93 is formed in the protection frame 3, and the first limiting groove 11 limits the movement track of the limiting block 92 during the moving process, so as to prevent the limiting block 92 from rotating along with the rotation of the threaded rod 91;

referring to fig. 4, a rubber layer 10 is fixed on one side of the limiting block 92, and friction between the rubber layer 10 and the diffraction plate 4 is increased, so that the clamping effect of the second limiting component 9 is better;

referring to fig. 2 and 4, a second limiting groove 12 corresponding to the position of the diffraction plate 4 is provided at the bottom of the protection frame 3, the diffraction plate 4 is inserted into the protection frame 3, and the bottom of the diffraction plate 4 enters the second limiting groove 12 to position the diffraction plate 4 for the first time.

The working principle and the using flow of the utility model are as follows: before installation, the spring 54 is in the state of expanding, at this moment, the connecting rod 51 is in the protection frame 3 bottom, during the installation, insert the diffraction piece 4 into the protection frame 3, diffraction piece 4 bottom gets into second spacing groove 12 and carries out first time location to diffraction piece 4, make threaded rod 91 drive stopper 92 remove to diffraction piece 4 through rotating second handle 93, the first spacing groove 11 of in-process of removal limits stopper 92 motion track, avoid stopper 92 to rotate along with threaded rod 91 rotation, until two stoppers 92 centre gripping diffraction piece 4, rubber layer 10 increase and diffraction piece 4 between friction, slide first spacing component 5 upwards along slide rail 7, in-process, sponge layer 6 passes through diffraction piece 4 surface and clears up diffraction piece 4 surface's dust, when sliding to location portion 8, two limiting plates 52 press from both sides tight diffraction piece 4, spring 54 compression and protection frame 3 inner wall produce great frictional force and make first spacing component 5 fix on protection frame 3 upper portion, realize the fixed centre gripping to diffraction piece 4, when changing diffraction piece 4, same rotation second handle 93 makes stopper 92 keep away from diffraction piece 4, move down first spacing component 5 and make it leave location portion 8, it is difficult to take out the powerful extrusion of diffraction piece 4, diffraction piece 4 is extruded again, 4 can be forced to take out, the diffraction piece 4 is extruded.

Finally, it should be noted that: the above is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but it is to be understood that the present utility model is described in detail with reference to the foregoing embodiments, and modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (6)

1. A holographic diffraction grating comprising a base (1), characterized in that: the utility model discloses a protection device for the automobile, including base (1), base (1) upper surface fixation has mount pad (2), mount pad (2) upper end has set firmly protection frame (3), inside diffraction piece (4) that are provided with of protection frame (3), and mount pad (2) both sides pass there are two first spacing subassemblies (5), first spacing subassembly (5) are including connecting rod (51) that pass protection frame (3) both sides, connecting rod (51) both ends are fixed with limiting plate (52) and first handle (53) respectively, and the position cover that connecting rod (51) surface is located between limiting plate (52) and protection frame (3) is equipped with spring (54), limiting plate (52) one side is fixed with sponge layer (6), slide rail (7) corresponding with limiting plate (52) position are seted up to protection frame (3) both sides, and protection frame (3) upper end is equipped with location portion (8), and protection frame (3) lower part is provided with second spacing subassembly (9).

2. A holographic diffraction grating as claimed in claim 1, wherein: the second limiting assembly (9) comprises a threaded rod (91) in threaded connection with the protection frame (3), one end of the threaded rod (91) located outside the protection frame (3) is fixedly provided with a second handle (93), and the other end of the threaded rod (91) is connected with a limiting block (92) through a bearing.

3. A holographic diffraction grating as claimed in claim 2, wherein: a first limit groove (11) corresponding to the position of the second handle (93) is formed in the protective frame (3).

4. A holographic diffraction grating as claimed in claim 2, wherein: one side of the limiting block (92) is fixed with a rubber layer (10).

5. A holographic diffraction grating as claimed in claim 1, wherein: and a second limit groove (12) corresponding to the diffraction sheet (4) is formed in the bottom of the protection frame (3).

6. A holographic diffraction grating as claimed in claim 1, wherein: support legs (13) are fixed at four corners of the lower surface of the base (1), and reinforcing rods (14) are fixed between the support legs (13).