Light-transmitting slit device and grating inscribing equipment

Abstract

The utility model belongs to the technical field of grating inscribing, and discloses a light-transmitting slit device and grating inscribing equipment. The light-transmitting slit device comprises a slit base, two sliding blocks, two driving assemblies and a supporting assembly. The slit base is provided with a slit hole, and the light beam can pass through the slit hole. The two sliding blocks are connected to the slit base in a sliding mode in the first direction, the two sliding blocks can shield the slit hole, and a light-transmitting slit is formed between the two sliding blocks. The driving assemblies are in one-to-one correspondence with the sliding blocks, the driving assemblies are connected to the slit base, and the driving assemblies can drive the sliding blocks to slide in the first direction. The supporting assembly is connected to the slit base, and the supporting assembly can fix the slit base to the optical platform. The two sliding blocks are driven by the driving assembly to move in the direction close to each other, and the width of the light-transmitting slit is reduced. The driving assembly drives the two sliding blocks to move in the direction away from each other, the width of the light-transmitting slit is increased, and therefore adjustment of the width of the light-transmitting slit is achieved.

Description

Technical Field

[0001] This utility model relates to the field of grating writing technology, and in particular to a light-transmitting slit device and grating writing equipment. Background Technology

[0002] A grating is an optical device composed of a large number of parallel slits of equal width and spacing. With the continuous development of optical technology, gratings have been widely used in fields such as spectral analysis, optical communication, and laser processing. Gratings with different widths and spacings can achieve different grating performances to meet the diverse selectivity requirements of optical applications.

[0003] Grating writing is a technique for creating grating structures on the surface of optical components. During the grating writing process, a light beam shines through a slit onto the substrate material, forming parallel grooves of equal width and spacing. These grooves constitute the grating. By adjusting the width of the slit, grooves of different widths and spacings can be obtained, resulting in gratings with different properties.

[0004] Existing grating writing equipment requires the replacement of light-transmitting slit devices of different sizes when making gratings of different widths and spacings. This necessitates repeated installation and disassembly of the light-transmitting slit devices, which is complex, reduces the efficiency of grating writing, and requires the fabrication of multiple light-transmitting slit devices, thus increasing the cost of grating writing. Utility Model Content

[0005] The purpose of this invention is to provide a light-transmitting slit device and a grating writing device. The light-transmitting slit device can adjust the width of the light-transmitting slit, and has a simple structure and is easy to operate.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] On the one hand, a light-transmitting slit device is provided, comprising:

[0008] A slit base, wherein a slit hole is provided on the slit base;

[0009] Two sliders are slidably connected to the slit base along a first direction, and the two sliders are capable of blocking the slit hole;

[0010] Two driving components are provided, each corresponding to a slider. The driving components are connected to the slit base and can drive the slider to slide along the first direction.

[0011] A support assembly connected to the slit base, the support assembly being capable of fixing the slit base to the optical platform.

[0012] Optionally, the slit base is provided with a groove extending along a first direction, the groove passing through the slit hole, and the two sliders are slidably connected within the groove.

[0013] Optionally, the drive assembly includes a stop block, a set screw, and an elastic element. The stop block is fixedly connected to the end of the slit base along a first direction. The stop block has a first threaded hole extending along the first direction. The set screw is threadedly connected to the first threaded hole and abuts against the slider. One end of the elastic element abuts against the slider, and the other end abuts against the stop block.

[0014] Optionally, the stop is disposed within the groove.

[0015] Optionally, two elastic elements are provided, and the two elastic elements are respectively located on both sides of the set screw.

[0016] Optionally, the stop block is detachably connected to the slit base.

[0017] Optionally, the support assembly includes a connecting rod and a sleeve, one end of the connecting rod being connected to the slit base and the other end being slidably connected inside the sleeve, the sleeve being able to be fixed to the optical platform.

[0018] Optionally, the support assembly further includes a locking member connected to the sleeve and capable of abutting against the side wall of the connecting rod.

[0019] Optionally, the slit base is made of aluminum alloy.

[0020] On the other hand, a grating writing apparatus is provided, including an optical platform, a laser, and the aforementioned light-transmitting slit device, wherein the laser and the slit base are mounted on the optical platform, and the laser corresponds to the slit aperture.

[0021] The beneficial effects of this utility model are:

[0022] This invention provides a light-transmitting slit device and a grating writing apparatus. The light-transmitting slit device includes a slit base, two sliders, two driving components, and a supporting component. The slit base has a slit hole through which a light beam can pass. The two sliders are slidably connected to the slit base along a first direction, and the two sliders can block the slit hole, forming a light-transmitting slit between the two sliders. Each driving component corresponds to one slider and is connected to the slit base, driving the sliders to slide along the first direction. The supporting component is connected to the slit base and can fix the slit base to an optical platform. By driving the two sliders to move closer together, the width of the light-transmitting slit decreases; by driving the two sliders to move further apart, the width of the light-transmitting slit increases, thereby achieving adjustment of the light-transmitting slit width. When fabricating gratings of different widths, only the distance between the two sliders needs to be adjusted, without the need to replace different light-transmitting slit devices. This simplifies operation, improves grating writing efficiency, and reduces grating writing costs. Furthermore, the light-transmitting slit device has a simple structure and is easy to operate. Attached Figure Description

[0023] Figure 1 This is one of the structural schematic diagrams of the light-transmitting slit device provided in the embodiments of this utility model;

[0024] Figure 2 This is the second schematic diagram of the structure of the light-transmitting slit device provided in this embodiment of the utility model;

[0025] Figure 3 This is a schematic diagram of the slit base provided in an embodiment of the present invention;

[0026] Figure 4 This is a schematic diagram of the slider provided in an embodiment of the present invention;

[0027] Figure 5 This is a schematic diagram of the structure of the stop provided in an embodiment of the present utility model;

[0028] Figure 6 This is a schematic diagram of the connecting rod provided in an embodiment of the present utility model;

[0029] Figure 7 This is a schematic diagram of the structure of the sleeve provided in an embodiment of the present utility model;

[0030] Figure 8 This is a schematic diagram of the structure of the elastic element provided in the embodiment of this utility model.

[0031] In the picture:

[0032] 1. Slit base; 11. Slit hole; 12. Groove; 121. Second threaded hole; 13. Connecting hole;

[0033] 2. Slider; 21. First mounting hole;

[0034] 3. Drive assembly; 31. Stop block; 311. First threaded hole; 312. Second mounting hole; 313. Through hole; 32. Set screw; 33. Elastic element;

[0035] 4. Support assembly; 41. Connecting rod; 42. Sleeve; 421. Third threaded hole; 422. Fourth threaded hole; 43. Locking component. Detailed Implementation

[0036] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not the entire structure.

[0037] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0038] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0039] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0040] like Figure 1 and Figure 2As shown, this embodiment provides a light-transmitting slit device, including a slit base 1, two sliders 2, two driving components 3, and a support component 4. The slit base 1 has a slit hole 11 through which a light beam can pass. The two sliders 2 are slidably connected to the slit base 1 along a first direction, and the two sliders 2 can block the slit hole 11, forming a light-transmitting slit between the two sliders 2. The driving components 3 correspond one-to-one with the sliders 2, are connected to the slit base 1, and can drive the sliders 2 to slide along the first direction. The support component 4 is connected to the slit base 1 and can fix the slit base 1 to an optical platform. By driving the two sliders 2 to move closer to each other using the driving components 3, the width of the light-transmitting slit decreases; by driving the two sliders 2 to move further apart using the driving components 3, the width of the light-transmitting slit increases, thereby achieving adjustment of the light-transmitting slit width. When fabricating gratings of different widths, only the distance between the two sliders 2 needs to be adjusted; there is no need to change different light-transmitting slit devices. This simplifies operation, improves grating writing efficiency, and reduces grating writing costs. Furthermore, the light-transmitting slit device has a simple structure and is easy to operate.

[0041] Specifically, the first direction is the X-direction, which is perpendicular to the axis of the slit hole 11. The slit base 1 is a rectangular plate structure. The slit hole 11 is located at the center of the slit base 1, and its cross-section is rectangular. The slider 2 is made of stainless steel, which has high hardness. The drive assembly 3 is located on the opposite side of the two sliders 2.

[0042] Alternatively, the slit base 1 may be made of aluminum alloy, which is lightweight and easy to process.

[0043] Optionally, such as Figure 1 and Figure 3 As shown, the slit base 1 is provided with a groove 12 that runs through the first direction. The groove 12 passes through the slit hole 11, and two sliders 2 are slidably connected in the groove 12 so that the sliders 2 can slide in the first direction. Moreover, the sliders 2 being located in the groove 12 makes the overall structure of the light-transmitting slit device more aesthetically pleasing.

[0044] Specifically, the slide groove 12 is disposed on one side of the slit base 1 and is located at the center of the slit base 1 in the width direction. The width of the slide groove 12 is greater than the width of the slit hole 11, so that the slider 2 can completely cover the slit hole 11 along the width direction of the slit base 1. Limiting steps are provided on both end sidewalls of the slider 2 along the width direction of the slit base 1, and limiting edges are provided on the sidewalls of the slide groove 12. The side of the limiting step facing away from the bottom wall of the slide groove 12 can abut against the limiting edge to prevent the slider 2 from falling off. In other embodiments, a slide rail extending in a first direction can also be provided on one side of the slit base 1, and the two sliders 2 can be slidably connected to the slide rail to realize the movement of the two sliders 2 in the first direction.

[0045] Optionally, such as Figures 1-6 As shown, the drive assembly 3 includes a stop block 31, a set screw 32, and an elastic element 33. The stop block 31 is fixedly connected to the end of the slit base 1 along a first direction. A first threaded hole 311 extending along the first direction is provided on the stop block 31. The set screw 32 is threaded into the first threaded hole 311 and abuts against the slider 2. One end of the elastic element 33 abuts against the slider 2, and the other end abuts against the stop block 31. Rotating the set screw 32 moves it towards each other, thereby pushing the two sliders 2 closer together and reducing the width of the light-transmitting slit. Rotating the set screw 32 in the opposite direction moves it away from each other, causing the two sliders 2 to move away from each other under the action of the elastic element 33, increasing the width of the light-transmitting slit. At the same time, the stop block 31 can also block the slider 2, preventing the slider 2 from falling out of the groove 12.

[0046] Specifically, the first threaded hole 311 is located at the center of the stop block 31. The stop block 31 is made of stainless steel. A first mounting hole 21 is provided on the opposite side of the two sliders 2, and a second mounting hole 312 is provided on the opposite side of the two stop blocks 31. One end of the elastic element 33 is installed in the first mounting hole 21, and the other end of the elastic element 33 is installed in the second mounting hole 312. The elastic element 33 is a spring; in other embodiments, it can also be a rod-shaped structure made of an elastic material. In other embodiments, the drive assembly 3 can also be a lead screw and a lead screw support. The lead screw support is fixed to the end of the slit base 1 along the first direction, and the lead screw is rotatably connected to the lead screw support. One end of the lead screw is threadedly connected to the slider 2, and rotating the lead screw drives the slider 2 to move along the first direction.

[0047] Optionally, the stop 31 is disposed within the slide groove 12 to make the overall structure of the light-transmitting slit device more aesthetically pleasing.

[0048] Optionally, two elastic elements 33 are provided, with the two elastic elements 33 located on both sides of the set screw 32 respectively, to improve the pulling force of the elastic element 33 on the slider 2 and the sliding stability of the slider 2, and to avoid the slider 2 being unable to move due to the failure of one elastic element 33.

[0049] Optionally, the stop block 31 is detachably connected to the slit base 1, which facilitates the installation and removal of the light-transmitting slit device.

[0050] Specifically, the stop block 31 is connected to the slit base 1 by screws. The stop block 31 has a through hole 313, and the bottom of the groove 12 has a second threaded hole 121. The screw passes through the through hole 313 and is threaded into the second threaded hole 121.

[0051] Optionally, such as Figure 1 , Figure 7 and Figure 8As shown, the support assembly 4 includes a connecting rod 41 and a sleeve 42. One end of the connecting rod 41 is connected to the slit base 1, and the other end is slidably connected inside the sleeve 42. The sleeve 42 can be fixed on the optical platform. By adjusting the position of the connecting rod 41 inside the sleeve 42, the position of the slit base 1 can be adjusted, thereby adjusting the position of the slit. Specifically, the slit base 1 is provided with a connecting hole 13, and the connecting rod 41 is fixed inside the connecting hole 13 by a connector.

[0052] Furthermore, the support assembly 4 also includes a locking member 43, which is connected to the sleeve 42 and can abut against the side wall of the connecting rod 41 to fix the connecting rod 41 and the sleeve 42.

[0053] Specifically, the locking element 43 is a fastening screw. A third threaded hole 421 is provided on the side wall of the sleeve 42, and the locking element 43 is threaded into the third threaded hole 421. Loosening the locking element 43 moves it away from the connecting rod 41 to adjust the position of the connecting rod 41; tightening the locking element 43 presses against the connecting rod 41 to fix the connecting rod 41 and the sleeve 42.

[0054] This embodiment also provides a grating writing device, including an optical platform, a laser, and the above-mentioned light-transmitting slit device. The laser and the slit base 1 are mounted on the optical platform. The laser corresponds to the slit hole 11, and the light beam emitted by the laser can pass through the slit hole 11.

[0055] Specifically, the sleeve 42 is connected to the optical platform by screws. The sleeve 42 has a fourth threaded hole 422 on the side facing away from the slit base 1, and a positioning hole is provided on the optical platform. The screw passes through the positioning hole and is threadedly connected to the fourth threaded hole 422.

[0056] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A light-transmissive slit device, characterized by include: A slit base (1) is provided with a slit hole (11); Two sliders (2) are slidably connected to the slit base (1) along a first direction, and the two sliders (2) can block the slit hole (11); Two drive components (3) are provided, each corresponding to a slider (2). The drive components (3) are connected to the slit base (1) and can drive the slider (2) to slide along the first direction. A support assembly (4) is connected to the slit base (1) and the support assembly (4) is capable of fixing the slit base (1) to the optical platform.

2. The light-transmissive slot device according to claim 1, characterized in that The slit base (1) is provided with a sliding groove (12) that runs through the first direction. The sliding groove (12) passes through the slit hole (11), and the two sliders (2) are slidably connected in the sliding groove (12).

3. The light transmitting slit device of claim 2, wherein, The drive assembly (3) includes a stop (31), a set screw (32), and an elastic element (33). The stop (31) is fixedly connected to the end of the slit base (1) along the first direction. The stop (31) has a first threaded hole (311) extending along the first direction. The set screw (32) is threaded to the first threaded hole (311) and abuts against the slider (2). One end of the elastic element (33) abuts against the slider (2), and the other end abuts against the stop (31).

4. The light transmitting slit device of claim 3, wherein The stop (31) is disposed in the groove (12).

5. The light transmitting slit device of claim 3, wherein, Two elastic elements (33) are provided, and the two elastic elements (33) are respectively located on both sides of the set screw (32).

6. The light transmitting slit device of claim 3, wherein, The stop block (31) is detachably connected to the slit base (1).

7. The light transmitting slit device of claim 1, wherein The support assembly (4) includes a connecting rod (41) and a sleeve (42). One end of the connecting rod (41) is connected to the slit base (1), and the other end is slidably connected inside the sleeve (42). The sleeve (42) can be fixed on the optical platform.

8. The light transmitting slit device of claim 7, wherein, The support assembly (4) also includes a locking member (43), which is connected to the sleeve (42) and can abut against the side wall of the connecting rod (41).

9. The light transmitting slot device according to any one of claims 1-8, wherein, The slit base (1) is made of aluminum alloy.

10. A grating writing apparatus, characterized by comprising: It includes an optical platform, a laser, and a light-transmitting slit device as described in any one of claims 1-9, wherein the laser and the slit base (1) are mounted on the optical platform, and the laser corresponds to the slit hole (11).

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