Slit device for optical instrument

Abstract

The utility model discloses a slit device for an optical instrument, which comprises a base, the base is L-shaped, the bottom of the base is fixedly connected with a slit plate, the two sides of the slit plate are L-shaped, the front end face of the slit plate is provided with a positioning groove, the center of the bottom of the positioning groove is provided with a slit opening, the positioning groove is internally provided with an adjusting plate, and the adjusting plate is fixedly connected with the slit plate. A plurality of light holes are formed in the surface of the adjusting plate, limiting pipes are arranged at the two ends of the adjusting plate in a sleeving mode, fixing blocks are fixedly connected between the limiting pipes and the slit plate, a top cover is installed at the top of the base, and a plurality of dehumidifying frames are fixedly connected to the bottom of the top cover. According to the utility model, the slit width of the optical instrument can be rapidly adjusted without a complex mechanical structure, the manufacturing cost of the device is greatly reduced, the response time is effectively shortened, the real-time dynamic optical measurement requirement can be met, and the dustproof and moistureproof performance is good.

Description

Technical Field

[0001] This invention belongs to the field of optical slit technology, and in particular relates to a slit device for optical instruments. Background Technology

[0002] A slit device is a key component in optical instruments, responsible for controlling the shape, size, and intensity of a light beam. It is commonly used in spectrometers, interferometers, and laser systems. The design and manufacture of slit devices directly impact the performance of optical instruments.

[0003] Currently, there are some slit devices on the market, such as a device for online switching of optical slits disclosed on the China Patent Network, with the publication number CN212363428U. This slit device can be used in optical instruments, but it has some defects and shortcomings that need to be improved: (1) Due to structural design reasons, some existing slit devices often require a relatively complex mechanical structure to adjust the width of the slit, which makes the manufacturing cost of the device high. Moreover, for applications that require rapid adjustment of the slit width, the traditional mechanical adjustment response speed is slow, making it difficult to meet the real-time dynamic optical measurement requirements; (2) Some existing slit devices lack effective dustproof and moisture-proof measures. After long-term use, the relevant slit components are easily contaminated by dust or moisture, which reduces the optical performance of the slit edge and leads to the performance degradation of the optical system. Therefore, in view of the above problems, the slit device for optical instruments provided by this utility model is of great significance. Utility Model Content

[0004] This invention provides a slit device for optical instruments. By horizontally moving the adjustment plate, the light-transmitting holes of different diameters can be aligned with the slit opening. At this time, the light beam generated by the optical instrument can be emitted through the slit opening and the corresponding light-transmitting holes, respectively, to achieve rapid adjustment of the slit width. Compared with the traditional mechanical structure adjustment method, this not only greatly reduces the manufacturing cost of the device, but also effectively shortens the response time, thereby meeting the needs of real-time dynamic optical measurement. The top cover can play a dustproof role, effectively preventing dust from falling and accumulating on the relevant slit components and affecting their performance. Furthermore, the desiccant placed in each desiccant rack can fully absorb the moisture around the slit plate and adjustment plate through each moisture absorption hole, thus playing a moisture-proof role. This effectively prevents moisture from adhering to the surface of the relevant slit components and affecting their performance. In summary, this invention solves the problems in the prior art.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model discloses a slit device for optical instruments, comprising a base, the base being L-shaped, with a slit plate fixedly connected to its bottom. The two sides of the slit plate are L-shaped, and a positioning groove is formed on the front end face of the slit plate. A slit opening is formed at the center of the bottom of the positioning groove, and an adjustment plate is provided inside the positioning groove. Several light-transmitting holes are formed on the surface of the adjustment plate, and limiting tubes are fitted at both ends of the adjustment plate. A fixing block is fixedly connected between the limiting tube and the slit plate. A top cover is installed on the top of the base, and several dehumidifying racks are fixedly connected to the bottom of the top cover.

[0007] Furthermore, the bottom surface of the base is provided with several anti-slip pads, which are long strips and are distributed linearly at equal intervals along the length of the bottom surface of the base, and each anti-slip pad has a herringbone anti-slip pattern on its surface.

[0008] Furthermore, the light-transmitting holes are equidistantly linearly distributed along the length of the adjustment plate, and the diameter of each light-transmitting hole increases sequentially from one end of the adjustment plate to the other end.

[0009] Furthermore, both the positioning groove and the adjusting plate are rectangular, and the width of the positioning groove is equal to the width of the adjusting plate.

[0010] Furthermore, the limiting tube is a square tube structure, and its inner wall length and width are equal to the width and thickness of the adjusting plate, respectively. The centers of the two limiting tubes and the center of the positioning groove are located on the same straight line.

[0011] Furthermore, a slot is provided on the top surface of the base, and a block is fixedly connected to the bottom rear side of the top cover. Both the block and the slot are T-shaped, and the width of the block is equal to the width of the slot.

[0012] Furthermore, the desiccant rack is U-shaped and is equidistantly linearly distributed along the length of the top cover. Each desiccant rack has several moisture-absorbing holes at its bottom, which are equidistantly linearly distributed along the length of the bottom surface of the desiccant rack.

[0013] The present invention has the following advantages over the prior art:

[0014] (1) When using the slit device for optical instruments in this utility model, the light transmission holes of different apertures can be made to coincide with the slit opening by horizontally moving the adjustment plate. At this time, the light beam generated by the optical instrument can be emitted through the slit opening and the light transmission hole of the corresponding aperture, so as to realize the rapid adjustment of the slit width. Compared with the traditional mechanical structure adjustment method, it not only greatly reduces the manufacturing cost of the device, but also effectively shortens the response time, thereby meeting the real-time dynamic optical measurement needs.

[0015] (2) When the slit device for optical instruments in this utility model is in use, the top cover can play a dustproof role, so as to effectively prevent dust from falling and accumulating on the relevant slit components and affecting their performance. In addition, the desiccant placed in each desiccant rack can fully absorb the moisture around the slit plate and the adjustment plate through each moisture absorption hole, so as to play a moisture-proof role, thereby effectively preventing moisture from adhering to the surface of the relevant slit components and affecting their performance.

[0016] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of a slit device for optical instruments according to the present invention;

[0019] Figure 2 This is a schematic diagram of the structure of the base and the slit plate in this utility model;

[0020] Figure 3 This is a bottom view of the slotted plate in this utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the adjusting plate in this utility model;

[0022] Figure 5 This is a schematic diagram of the top cover in this utility model.

[0023] The attached diagram lists the components represented by each number as follows:

[0024] 1. Base; 2. Slit plate; 3. Positioning groove; 4. Slit opening; 5. Adjustment plate; 6. Light-transmitting hole; 7. Limiting tube; 8. Fixing block; 9. Top cover; 10. Dehumidifier rack; 11. Anti-slip mat; 12. Card slot; 13. Card block; 14. Moisture absorption hole. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0026] In the description of this utility model, it should be understood that the terms "relative", "one end", "inner", "lateral", "end", "both ends", "both sides", "front", "one end face", "the other end face", etc., which indicate orientation or positional relationship, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0027] Please see Figure 1-5 As shown, this utility model discloses a slit device for optical instruments, comprising a base 1, which is L-shaped, with a slit plate 2 fixedly connected to its bottom. The two sides of the slit plate 2 are L-shaped, and a positioning groove 3 is provided on the front end face of the slit plate 2. A slit opening 4 is provided at the center of the bottom of the positioning groove 3, and an adjustment plate 5 is provided inside the positioning groove 3. Several light-transmitting holes 6 are provided on the surface of the adjustment plate 5, and limiting tubes 7 are sleeved on both ends of the adjustment plate 5. A fixing block 8 is fixedly connected between the limiting tube 7 and the slit plate 2. The optical instrument can be installed on the base 1 and positioned behind the slit plate 2. A top cover 9 is installed on the top of the base 1, which can cover the slit plate 2 and the adjustment plate 5 to prevent dust from falling and accumulating on the relevant slit components and affecting their performance. Several desiccant racks 10 are fixedly connected to the bottom of the top cover 9. Each desiccant rack 10 can be placed inside.

[0028] The base 1 has several anti-slip pads 11 on its bottom surface. The anti-slip pads 11 are long strips and are distributed linearly at equal intervals along the length of the bottom surface of the base 1. Each anti-slip pad 11 has herringbone anti-slip texture on its surface. The anti-slip pads 11 can be made of elastic materials such as rubber and are fixed by means of glue. When the base 1 is placed on a smooth surface, the anti-slip texture on the surface of each anti-slip pad 11 can increase the friction between the base 1 and the smooth surface, so as to play an anti-slip role and effectively prevent the slit device from slipping and shifting during use.

[0029] The light-transmitting holes 6 are equidistantly linearly distributed along the length of the adjusting plate 5, and the aperture of each light-transmitting hole 6 increases sequentially from one end of the adjusting plate 5 to the other end. By horizontally moving the adjusting plate 5, the light-transmitting holes 6 of different apertures can be made to coincide with the slit opening 4. At this time, the light beam generated by the optical instrument can be emitted through the slit opening 4 and the corresponding light-transmitting holes 6, respectively, so as to realize the rapid adjustment of the slit width. Compared with the traditional mechanical structure adjustment method, it not only greatly reduces the manufacturing cost of the device, but also effectively shortens the response time, thereby meeting the needs of real-time dynamic optical measurement.

[0030] Both the positioning groove 3 and the adjusting plate 5 are rectangular, and the width of the positioning groove 3 is equal to the width of the adjusting plate 5. The adjusting plate 5 can be attached to the inner wall of the positioning groove 3 to play a positioning role, thereby ensuring that the light-transmitting hole 6 on the adjusting plate 5 can be directly aligned with the slit opening 4.

[0031] The limiting tube 7 is a square tube structure, and its inner wall length and width are equal to the width and thickness of the adjusting plate 5, respectively. The center of the two limiting tubes 7 is on the same straight line as the center of the positioning groove 3. When the adjusting plate 5 is attached to the positioning groove 3, its two ends can pass through and attach to the inner wall of the limiting tube 7. At this time, the limiting tube 7 can limit and fix the adjusting plate 5 to prevent it from shifting and tilting during horizontal movement, and thus prevent the adjusting plate 5 from slipping out of the positioning groove 3.

[0032] The base 1 has a slot 12 on its top surface and a block 13 is fixedly connected to the bottom rear side of the top cover 9. Both the block 13 and the slot 12 are T-shaped, and the width of the block 13 is equal to the width of the slot 12. The block 13 can be inserted into and fit into the slot 12, so that the top cover 9 can be fixed to the top of the base 1 by plugging it in. The top cover 9 can be removed from the base 1 by sliding the block 13 out of the slot 12 for regular cleaning.

[0033] The desiccant rack 10 is U-shaped and is equidistantly distributed along the length of the top cover 9. Each desiccant rack 10 has several moisture-absorbing holes 14 at its bottom. The moisture-absorbing holes 14 are equidistantly distributed along the length of the bottom surface of the desiccant rack 10. When the desiccant is placed in the desiccant rack 10, it can fully absorb the moisture around the slit plate 2 and the adjusting plate 5 through each moisture-absorbing hole 14, so as to play a role in moisture prevention. This can effectively prevent moisture from adhering to the surface of the relevant slit components and affecting their performance.

[0034] All standard parts used in the application documents can be purchased from the market. All components in this application documents can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art.

[0035] The working principle of this utility model is as follows:

[0036] In use, the optical instrument can be mounted on the base 1 and positioned behind the slit plate 2. When the slit width of the optical instrument needs to be adjusted, the horizontally moving adjustment plate 5 allows the light-transmitting holes 6 of different diameters to coincide with the slit opening 4. At this time, the light beam generated by the optical instrument can be emitted through the slit opening 4 and the corresponding light-transmitting holes 6, respectively, to achieve rapid adjustment of the slit width. Compared with the traditional mechanical structure adjustment method, this not only greatly reduces the manufacturing cost of the device, but also effectively shortens the response time, thereby meeting the needs of real-time dynamic optical measurement. The top of the base 1 is equipped with a top cover 9, which can cover the slit plate 2 and the adjustment plate 5 to prevent dust. This effectively prevents dust from falling and accumulating on the relevant slit components and affecting their performance. Desiccant can be placed in each desiccant rack 10 at the bottom of the top cover 9. The desiccant can fully absorb the moisture around the slit plate 2 and the adjustment plate 5 through each moisture absorption hole 14 to prevent moisture from adhering to the surface of the relevant slit components and affecting their performance.

[0037] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A slit device for optical instruments, characterized in that, The device includes a base, which is L-shaped, with a slit plate fixedly connected to its bottom. The two sides of the slit plate are L-shaped, and a positioning groove is provided on the front end face of the slit plate. A slit opening is provided at the center of the bottom of the positioning groove, and an adjustment plate is provided inside the positioning groove. Several light-transmitting holes are provided on the surface of the adjustment plate, and limiting tubes are fitted at both ends of the adjustment plate. A fixing block is fixedly connected between the limiting tube and the slit plate. A top cover is installed on the top of the base, and several dehumidifying racks are fixedly connected to the bottom of the top cover.

2. A slit device for optical instruments according to claim 1, characterized in that, The bottom surface of the base is provided with several anti-slip pads. The anti-slip pads are long strips and are distributed linearly at equal intervals along the length of the bottom surface of the base. Each anti-slip pad has a herringbone anti-slip pattern on its surface.

3. A slit device for optical instruments according to claim 1, characterized in that, The light-transmitting holes are equidistantly linearly distributed along the length of the adjustment plate, and the diameter of each light-transmitting hole increases sequentially from one end of the adjustment plate to the other end.

4. A slit device for optical instruments according to claim 1, characterized in that, Both the positioning groove and the adjusting plate are rectangular, and the width of the positioning groove is equal to the width of the adjusting plate.

5. A slit device for optical instruments according to claim 1, characterized in that, The limiting tube is a square tube structure, and its inner wall length and width are equal to the width and thickness of the adjusting plate, respectively. The centers of the two limiting tubes and the center of the positioning groove are located on the same straight line.

6. A slit device for optical instruments according to claim 1, characterized in that, The top surface of the base has a slot, and a block is fixedly connected to the bottom rear side of the top cover. Both the block and the slot are T-shaped, and the width of the block is equal to the width of the slot.

7. A slit device for optical instruments according to claim 1, characterized in that, The desiccant rack is U-shaped and is equidistantly distributed along the length of the top cover. Each desiccant rack has several moisture-absorbing holes at its bottom, which are equidistantly distributed along the length of the bottom surface of the desiccant rack.

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