Fixture for splicing optical filters

Abstract

The utility model relates to the technical field of optical filter splicing, in particular to a fixture for optical filter splicing, which comprises a bottom plate, the bottom plate is concavely provided with a placing groove for splicing a plurality of optical filters, the placing groove is provided with a moving plate for abutting against the spliced optical filters, and the moving plate is provided with a clamping groove for clamping the spliced optical filters. And the bottom plate is detachably connected with a first locking piece for fixing the movable plate. According to the optical filter splicing device, by arranging the bottom plate and the containing grooves used for splicing the multiple optical filters, deviation during alignment of the multiple optical filters is avoided, the spliced optical filters abut against the movable plate, the pressing plates on the two sides of the bottom plate abut against the optical filters, the flatness of the optical filters is guaranteed, and the splicing precision of the optical filters is improved.

Description

Technical Field

[0001] This application relates to the technical field of filter splicing, and in particular to a fixture for splicing filters. Background Technology

[0002] A filter is an optical device used to select the desired radiation band, which can regulate light and filter the wavelength of light.

[0003] In sensors, filters can filter out light in the required wavelength band to achieve specific detection functions. In order to flexibly meet the needs of different optical systems and improve the integration and stability of optical systems, filters with different characteristics need to be spliced ​​together.

[0004] Most existing filters are spliced ​​using adhesive bonding. First, glue is applied to the bonding surfaces of the filters, and then the filters are aligned and spliced. For smaller filters, misalignment is prone to occur during alignment, affecting the splicing accuracy and consequently the optical performance of the filters.

[0005] Therefore, there is an urgent need for a filter splicing fixture that can solve the above problems and improve the splicing accuracy of filters. Utility Model Content

[0006] To improve the splicing accuracy of optical filters, this application provides a clamp for splicing optical filters.

[0007] This application provides a filter splicing fixture, which adopts the following technical solution:

[0008] A filter splicing fixture includes a base plate with a recessed placement groove for splicing multiple filters. The placement groove is provided with a movable plate that abuts against the spliced ​​filters. A first locking member for fixing the movable plate is detachably connected to the base plate.

[0009] By adopting the above technical solution, a placement groove is provided on the base plate. Multiple filters coated with adhesive are laid flat in the placement groove. A movable plate slides in the placement groove. The first locking member passes through the base plate and abuts against the movable plate. The movable plate then abuts the assembled filters, so that the sides of adjacent filters contact and adhere together. Compared with the prior art, using this fixture to assemble filters results in smaller gaps between filters, higher splicing accuracy, and ensures the stability of the optical performance of the filters.

[0010] Optionally, pressure plates for pressing down the filter are detachably connected to both sides of the base plate.

[0011] By adopting the above technical solution, pressure plates are provided on both sides of the base plate. The pressure plates press down on both ends of the filter to ensure that the surface of the filter is flatter after splicing.

[0012] Optionally, the base plate is provided with a second locking member, and the pressure plate is provided with a through hole for the second locking member to pass through. The base plate and the pressure plate are locked and fixed by the second locking member.

[0013] By adopting the above technical solution, the second locking component on the base plate locks with the through hole on the pressure plate, thereby locking and fixing the base plate and the pressure plate, preventing the filter from falling out of the placement slot, and further strengthening the tightness between the pressure plate and the filter.

[0014] Optionally, the pressure plate is provided with a third locking hole, and a locking element is threaded into the third locking hole. The locking element passes through the pressure plate and locks the moving plate.

[0015] By adopting the above technical solution, the locking component is threadedly engaged with the third locking hole on the pressure plate. After passing through the pressure plate through the third locking hole, the locking component approaches the moving plate until it is pressed against the surface of the moving plate, thus preventing the moving plate from disengaging from the placement slot and ensuring that the moving plate and the filter are stably kept in a pressed state.

[0016] Optionally, the movable plate has protrusions forming bumps, and the base plate has guide grooves for the protrusions to slide.

[0017] By adopting the above technical solution, the movable plate moves in the guide groove with the help of the protrusion, thereby adjusting the movable plate to slide toward the filter and press against the filter. The guide groove guides the movement of the protrusion, ensuring that the protrusion can accurately drive the movable plate to slide toward the filter.

[0018] Optionally, the third locking hole is provided in multiple ways and is arranged along the sliding direction of the protrusion, and the locking member passes through one of the third locking holes and abuts against the protrusion.

[0019] By adopting the above technical solution, as the number of filters placed in the placement slot varies, the positions of the moving plate and the protrusion in the placement slot also change accordingly. Multiple third locking holes are provided along the sliding direction of the protrusion to ensure that after the position of the protrusion changes, the locking parts can pass smoothly through the pressure plate and abut against the protrusion, ensuring that the moving plate remains in a stable position.

[0020] Optionally, the corners of the placement groove are recessed to form arc-shaped grooves corresponding to the corners of the filter.

[0021] By adopting the above technical solution, an arc-shaped groove is provided at the corner of the placement slot. The position of the arc-shaped groove corresponds to the position of the corner of the filter. This avoids damage to the corner of the filter due to hard contact with the inner corner of the placement slot after the moving plate presses the filter together.

[0022] Optionally, the pressure plate is provided with a height adjustment component for adjusting the vertical height between the pressure plate and the base plate, so that the pressure plate, after being adjusted, abuts against the filter placed inside the slot.

[0023] By adopting the above technical solution, when coating the side of the filter, the filter needs to be placed upright in the placement groove with the side of the filter facing upwards. The height of the upright filter is increased, and the vertical height between the pressure plate and the base plate needs to be adjusted using the height adjustment component. The pressure plate can be adjusted to a suitable height according to the upright filter and press the filter down to ensure that the filter upright in the placement groove can remain stable.

[0024] Optionally, the height adjustment component includes a threaded part and a waist hole. The waist hole is located on the side of the pressure plate, and the base plate has a height adjustment hole that is threadedly engaged with the threaded part. The threaded part passes through the waist hole and abuts against the pressure plate.

[0025] By adopting the above technical solution, the threaded part passes through the waist hole and engages with the threaded adjustment hole, thereby locking the pressure plate and the base plate together. The vertical height between the pressure plate and the base plate is adjusted by the waist hole. The threaded part passes through the waist hole and connects with the threaded adjustment hole, thereby achieving the pressing and fixing of filters in different positions.

[0026] Optionally, the base plate has a hollow area, and there are multiple placement slots, with the hollow area located between two adjacent placement slots.

[0027] By adopting the above technical solution, when coating the side of the filter, the filter stands upright in the placement groove, and the setting of the hollow area makes it easy for the side of the filter to be coated evenly.

[0028] In summary, this application includes at least one of the following beneficial technical effects:

[0029] 1. The base plate is provided with a placement groove, and multiple filters coated with adhesive are laid flat in the placement groove. A movable plate slides in the placement groove. The first locking member passes through the base plate and abuts against the movable plate. The movable plate then abuts against the assembled filters, so that the sides of adjacent filters contact and stick together. Compared with the prior art, using this fixture to assemble filters results in smaller gaps between filters and higher splicing accuracy.

[0030] 2. The second locking piece on the base plate locks into the through hole on the pressure plate to lock and fix the base plate and the pressure plate, preventing the filter from falling out of the placement slot and further strengthening the tightness between the pressure plate and the filter;

[0031] 3. The locking component is threaded into the third locking hole on the pressure plate. After passing through the third locking hole, the locking component approaches the moving plate until it is pressed against the surface of the moving plate, preventing the moving plate from disengaging from the placement slot and ensuring that the moving plate and the filter are stably kept in a pressed state. Attached Figure Description

[0032] Figure 1 This is a structural illustration of an embodiment of this application. Figure 1 This is used to demonstrate the placement relationship of the filters during splicing;

[0033] Figure 2 This is an explosion illustration of an embodiment of this application. Figure 1 This is used to show the positional relationship of the filters laid flat in the placement slot;

[0034] Figure 3 for Figure 2 Enlarged diagram of section A in the middle;

[0035] Figure 4 This is a structural illustration of an embodiment of this application. Figure 2 This is used to demonstrate the placement of filters during coating.

[0036] Figure 5 for Figure 4 Enlarged diagram of section B in the middle;

[0037] Figure 6 This is an explosion illustration of an embodiment of this application. Figure 2 This is used to show the positional relationship of the filter standing on its side in the placement slot.

[0038] Reference numerals: 1. Base plate; 2. Placement slot; 3. Filter; 4. Moving plate; 5. First locking hole; 6. First locking element; 7. Positioning hole; 8. Pressure plate; 9. Through hole; 10. Second locking hole; 11. Second locking element; 12. Arc groove; 13. Protrusion; 14. Guide groove; 15. Third locking hole; 16. Locking element; 17. Height adjustment assembly; 18. Threaded element; 19. Waist hole; 20. Height adjustment hole; 21. Hollowed-out area. Detailed Implementation

[0039] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0040] Example:

[0041] A jig for splicing filters, reference Figure 1 and Figure 2The fixture includes a base plate 1 with recessed placement grooves 2. Multiple pre-coated optical filters 3 are placed within the placement grooves 2, with each end of a filter 3 positioned within one of the two placement grooves 2 to ensure alignment. A movable plate 4 slides within the placement grooves 2. A first locking hole 5 is provided on the side of the base plate 1, and a first locking element 6 is provided on the base plate 1. The first locking element 6 is threaded into the first locking hole 5. The first locking element 6 is a bolt, and the first locking hole 5 is a threaded hole. The movable plate 4 has a recessed side... The recess has a positioning hole 7 for the first locking member 6 to pass through. The first locking member 6 passes through the first locking hole 5 through the base plate 1 and enters the positioning hole 7. The positioning hole 7 has a small depth. The first locking member 6 pushes the moving plate 4 by pressing against the bottom of the positioning hole 7. The moving plate 4 slides along the placement groove 2 until it presses against the filter 3, so that the sides of the adjacent filters 3 contact and stick together. In this embodiment, the base plate 1 and the moving plate 4 are both made of stainless steel to ensure that the fixture has good hardness and wear resistance.

[0042] refer to Figure 2 and Figure 3 Both sides of the base plate 1 are provided with pressure plates 8. In this embodiment, the pressure plates 8 are made of stainless steel. The pressure plates 8 press and fix the two ends of the filter 3, so that the surface of the filter 3 placed in the placement groove 2 remains flat. The longitudinal section of the pressure plate 8 is L-shaped. The pressure plate 8 is provided with a through hole 9. The base plate 1 is provided with a second locking hole 10. The pressure plate 8 is provided with a second locking member 11. The second locking hole 10 is a threaded hole. The second locking member 11 is a bolt that is threaded to the second locking hole 10. The second locking member 11 is threaded to the second locking hole 10 after passing through the through hole 9 on the pressure plate 8, so that the pressure plate 8 and the base plate 1 are locked and fixed. The corner of the placement groove 2 is provided with an arc groove 12. The position of the arc groove 12 corresponds to the position of the corner of the filter 3, so as to avoid the corner of the filter 3 from being bumped during the splicing process, which would affect the optical performance of the filter 3.

[0043] refer to Figure 2 and Figure 3The movable plate 4 has protrusions 13 on both sides. A guide groove 14 is provided on the base plate 1, which communicates with the placement groove 2. The protrusions 13 slide within the guide groove 14, which guides their movement. Multiple third locking holes 15 are provided on the pressure plate 8. Locking elements 16, which are bolts, are threaded into the locking holes. The third locking holes 15 are threaded holes that engage with the threads of the locking elements 16. The number of filters 3 placed varies. The movable plate 4... The position of the protrusion 13 in the placement groove 2 will also change, and the position of the protrusion 13 on the moving plate 4 in the guide groove 14 will also change accordingly. Multiple third locking holes 15 are set along the direction of the sliding of the protrusion 13 in the guide groove 14, so that after the position of the protrusion 13 in the placement groove 2 changes, the locking member 16 can pass through one of the third locking holes 15 and abut against the protrusion 13, so as to ensure that the moving plate 4 is always kept in a stable position, thereby ensuring that the filter 3 can be firmly abutted.

[0044] refer to Figure 4 and Figure 6 Using this fixture, side coating of filter 3 can be achieved. Filter 3 is placed upright in placement groove 2 with the cut side facing upwards. The height of the upright filter 3 increases, and pressure plate 8 needs to be adjusted to the corresponding height to press down on filter 3. Then, combined with... Figure 5 The pressure plate 8 is equipped with a height adjustment component 17, which is used to adjust the vertical height between the pressure plate 8 and the base plate 1. The height adjustment component 17 includes a threaded part 18 and a waist hole 19. The waist hole 19 is located on the side of the pressure plate 8, and the base plate 1 has a height adjustment hole 20 on its side. The threaded part 18 is a bolt, and the height adjustment hole 20 is a threaded hole that is threaded to the threaded part 18. After the threaded part 18 passes through the waist hole 19, it is threaded and locked with the height adjustment hole 20, thereby achieving the tightness between the pressure plate 8 and the base plate 1. The waist hole 19 is racetrack-shaped. After the threaded part 18 passes through different positions of the waist hole 19, it is threaded to the height adjustment hole 20, and the vertical height between the pressure plate 8 and the base plate 1 also changes accordingly, thereby achieving the adjustment of the height between the pressure plate 8 and the base plate 1.

[0045] refer to Figure 5 and Figure 6When using this fixture to perform side coating on the filter 3, firstly, the pressure plate 8 is removed from the base plate 1, and multiple filters 3 are placed sideways in the placement groove 2. The moving plate 4 is pushed to press against the sideways filter 3. The pressure plate 8 is adjusted to the required position through the waist hole 19. Then, the threaded part 18 is passed through the waist hole 19 and threadedly locked with the height adjustment hole 20 on the base plate 1, thereby locking the pressure plate 8 and the base plate 1. The sideways filter 3 can be stably pressed down by the pressure plate 8, which facilitates the subsequent single-side coating treatment of the filter 3. The base plate 1 has a hollow area 21 in the area of ​​the placement groove 2. When the filter 3 is coated by vacuum evaporation, the hollow area 21 facilitates the uniform deposition of coating material on the side of the filter 3, making the side coating effect of the filter 3 more stable.

[0046] The implementation principle of this application embodiment is as follows: Multiple filters 3 coated with adhesive are laid flat in the placement groove 2. The first locking member 6 passes through the base plate 1 and pushes the movable plate 4 to slide. The movable plate 4 approaches the filters 3 and presses them together. The sides of adjacent filters 3 contact and adhere together. The second locking member 11 on the base plate 1 locks into the through hole 9 on the pressure plate 8, locking and fixing the base plate 1 and the pressure plate 8. The protrusion 13 is formed by the movable plate 4 protruding outwards. The locking member 16 passes through one of the third locking holes 15 and presses against the protrusion 13, achieving the locking and fixing of the pressure plate 8 and the movable plate 4, ensuring the assembly... The connected filter 3 has good flatness. The second locking member 11 and the locking member 16 work together on the pressure plate 8 to ensure that the pressure plate 8 can be subjected to balanced force. When coating one side of the filter 3, the pressure plate 8 and the moving plate 4 are removed. Multiple filters 3 are placed sideways in the placement groove 2. The moving plate 4 is pushed to press against the filter 3 by the first locking member 6. The pressure plate 8 is raised through the waist hole 19 and presses against the filter 3. Then the threaded member 18 is passed through the waist hole 19 and locked with the height adjustment hole 20 by thread, so that the pressure plate 8 is locked and fixed to the base plate 1. Then the coating treatment is performed on one side of the filter 3.

[0047] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A jig for filter splicing, characterized by: The clamp comprises a bottom plate (1), a placing groove (2) for placing a plurality of filters (3) is recessed on the bottom plate (1), a moving plate (4) for abutting the placed filters (3) is arranged on the placing groove (2), and a first locking member (6) for fixing the moving plate (4) is detachably connected to the bottom plate (1).

2. The filter splicing jig according to claim 1, characterized by: Pressing plates (8) for pressing the filters (3) are detachably connected to the two sides of the bottom plate (1).

3. The filter splicing fixture of claim 2, wherein: A second locking member (11) is arranged on the bottom plate (1), a through hole (9) is formed in the pressing plate (8) for the second locking member (11) to pass through, and the bottom plate (1) and the pressing plate (8) are locked and fixed by the second locking member (11).

4. The filter splicing fixture of claim 3, wherein: A third locking hole (15) is arranged on the pressing plate (8), a locking member (16) is threadedly connected in the third locking hole (15), and the locking member (16) locks the moving plate (4) after passing through the pressing plate (8).

5. The filter splicing fixture of claim 4, wherein: A protruding block (13) is formed on the moving plate (4), and a guide groove (14) is formed on the bottom plate (1) for the protruding block (13) to slide.

6. The filter splicing fixture of claim 5, wherein: A plurality of third locking holes (15) are arranged along the sliding direction of the protruding block (13), and the locking member (16) abuts against the protruding block (13) after passing through one of the third locking holes (15).

7. The filter splicing fixture of claim 1, wherein: Arc-shaped grooves (12) corresponding to the corners of the filters (3) are recessed at the corners of the placing groove (2).

8. The filter splicing fixture of claim 2, wherein: An adjusting assembly (17) for adjusting the vertical height between the pressing plate (8) and the bottom plate (1) is arranged on the pressing plate (8), and the pressing plate (8) abuts against the filters (3) standing in the placing groove (2) after being adjusted.

9. The filter splicing fixture of claim 8, wherein: The adjusting assembly (17) comprises a threaded member (18) and a waist hole (19), the waist hole (19) is arranged on the side surface of the pressing plate (8), an adjusting hole (20) threadedly matched with the threaded member (18) is formed on the bottom plate (1), and the threaded member (18) abuts against the pressing plate (8) after passing through the waist hole (19).

10. The filter splicing fixture of claim 9, wherein: The bottom plate (1) is provided with a hollow area (21), a plurality of placing grooves (2) are arranged, and the hollow area (21) is located between two adjacent placing grooves (2).

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