Optical filter holder and light-emitting device

Abstract

The utility model discloses an optical filter holder and light-emitting equipment, belongs to the technical field of optical filter clamping, and comprises a supporting assembly and a pressing piece, the supporting assembly comprises a supporting seat and at least two connecting seats, the supporting seat is provided with a first light-transmitting through hole, the supporting seat is sunken downwards by taking the first light-transmitting through hole as the center to form a clamping groove, and the clamping groove is provided with a first light-transmitting through hole; the clamping groove extends in the circumferential direction of the first light-transmitting through opening. The pressing and holding piece is detachably installed on the supporting base, and a clamping position is formed between the pressing and holding piece and the bottom wall of the clamping groove. The pressing piece is provided with a second light-transmitting through opening corresponding to the first light-transmitting through opening. The two connecting seats are installed in the circumferential direction of the supporting seat, the two connecting seats are arranged diagonally, and suction cups are arranged on the connecting seats. The clamping position is used for placing the optical filter, the supporting seat is fixed on the large area light source through the suction cup, the optical filter can be installed on the light source with a large effective area on the premise that the shielding rate is controlled, and the suction cup is simple in installation mode and matched with the large area light source.

Description

Technical Field

[0001] This utility model relates to the technical field of holding optical filters, and in particular to a optical filter holder and a light-emitting device. Background Technology

[0002] An optical filter is an optical filter used to remove unwanted spectral components or interfering light from incident light. Based on practical applications, commonly used filters typically cover the entire optical path, meaning the effective area of ​​the filter is larger than the effective light-passing area of ​​the optical path. Currently, filter holder designs mainly include optical extension rod filter holders and insert-type spring clip filter holders. Their common feature is that the filter holder requires sufficient space outside the optical path for fixation.

[0003] As the application fields of filters continue to expand, when filters are used as foreground observation targets, the light source is usually a large surface light source, whose light-emitting area is much larger than the effective light-transmitting area of ​​the filter. At this time, traditional filter holders cannot meet the new application requirements. Therefore, developing a filter holder for large surface light sources is an urgent problem to be solved. Summary of the Invention

[0004] The purpose of this invention is to solve the problem of installing a filter with a large effective area on the surface light source while controlling the occlusion rate when using a large surface light source as the background and a filter as the foreground, and to provide a filter holder and a light-emitting device.

[0005] The technical solutions for achieving the above objectives include the following:

[0006] A filter holder includes a support assembly and a pressing member. The support assembly includes a support base and at least two connecting bases. The support base has a first light-transmitting opening. The support base is recessed downward with the first light-transmitting opening as the center and forms a slot. The slot extends circumferentially along the first light-transmitting opening.

[0007] The holding member is detachably mounted on the support base, and a clamping position is formed between the holding member and the bottom wall of the slot; the holding member has a second light-transmitting opening corresponding to the first light-transmitting opening;

[0008] Two connectors are installed on the circumference of the support base, and the two connectors are arranged diagonally. Each connector is equipped with a suction cup.

[0009] In one embodiment, the support base further has a mounting groove that extends circumferentially along the slot and has an outer diameter larger than that of the slot; the pressing member is disposed within the mounting groove.

[0010] In one embodiment, the support base further has at least two first positioning grooves and a first magnetic attractor. The two first positioning grooves are disposed in the mounting groove and are disposed opposite to each other. The first magnetic attractor is installed in the first positioning groove. The holding member has a second positioning groove, and the second positioning groove is provided with a second magnetic attractor that cooperates with the first magnetic attractor.

[0011] In one embodiment, there is a gap between the outer wall of the pressure member and the inner wall of the support.

[0012] In one embodiment, the support base has a first lifting hole extending from one side of the support base to the other side, the first lifting hole being disposed within a mounting groove, and the clamping member has a second lifting hole, the first lifting hole being used to communicate with the second lifting hole.

[0013] In one embodiment, the filter holder further includes a filter, which is mounted in a slot, and the outer surface of the filter is on the same plane as the bottom of the mounting slot.

[0014] The outer surface of the pressure member and the outer surface of the support base are located on the same plane.

[0015] In one embodiment, the first end of the connector has a mounting hole, and the second end of the connector has a limiting groove, which communicates with the mounting hole; the first end of the suction cup is installed in the limiting groove, and the mounting hole allows fasteners to pass through so that the suction cup is fixed to the connector by fasteners; the second end of the suction cup has an adsorption surface.

[0016] In one embodiment, the suction cup has an inverted conical structure, the adsorption surface is located at the maximum end of the suction cup, and the minimum end of the suction cup is disposed in the mounting hole;

[0017] The limiting groove has a circular structure, and the outer wall of the suction cup is used to fit against the bottom wall of the limiting groove.

[0018] This utility model also proposes a light-emitting device, including a light source, a bracket, and a filter holder as described above. The light source is mounted on the bracket, the filter holder is mounted on the light source, and the filter holder is disposed on the light-emitting channel of the light source.

[0019] The technical solution provided by this utility model has the following advantages and effects:

[0020] In this design, the outer edge of the filter is located within the slot, and this outer edge abuts against both the bottom wall of the slot and the holding member. Once the holding member is fixed to the support base, the filter is confined in its clamped position. The filter is placed in the slot, with its outer edge abutting against the bottom wall. The area of ​​the holding member is larger than the filter. The first and second light-transmitting openings are used for light to pass through and be projected. By clamping the filter in this way using the holding member and the slot of the support base, the area of ​​the filter being clamped can be reduced, thus controlling the occlusion rate. Simultaneously, the four edges of the filter are secured within the slot, improving the filter's stability. Furthermore, the support base is fixed to the large surface light source using suction cups. This allows the filter to be installed on the light source with a larger effective area while controlling the occlusion rate. The suction cup installation method is simple and compatible with large surface light sources. Attached Figure Description

[0021] The accompanying drawings illustrate specific examples of the technical solutions described in this utility model, and together with the detailed embodiments, form part of the specification, serving to explain the technical solutions, principles, and effects of this utility model.

[0022] Unless otherwise specified or defined, the same reference numerals in different figures represent the same or similar technical features, and different reference numerals may be used to represent the same or similar technical features.

[0023] Figure 1 This is an exploded view of the filter holder in one embodiment of the present invention. Figure 1 ;

[0024] Figure 2 This is an exploded view of the filter holder in one embodiment of the present invention. Figure 2 ;

[0025] Figure 3 This is a schematic diagram of a support base in one embodiment of the present invention;

[0026] Figure 4 This is a schematic diagram of a light-emitting device in one embodiment of the present invention;

[0027] Explanation of reference numerals in the attached figures:

[0028] 100. Filter holder; 1. Support assembly; 11. Support base; 111. Slot; 112. Mounting slot; 113. First positioning slot; 114. First lifting hole; 115. First light-transmitting opening; 12. Connecting base; 121. Limiting slot; 122. Mounting hole; 2. Pressing element; 21. Second positioning slot; 22. Second lifting hole; 23. Second light-transmitting opening; 3. Suction cup; 4. Filter; 200. Light-emitting device; 201. Bracket; 202. Light source. Detailed Implementation

[0029] To facilitate understanding of this utility model, the specific embodiments of this utility model will be described in more detail below with reference to the accompanying drawings.

[0030] Unless otherwise specified or defined, the terms "first," "second," etc., used in this document are for distinguishing names only and do not represent a specific number or order.

[0031] Unless otherwise stated or defined, the term “and / or” as used herein includes any and all combinations of one or more of the associated listed items.

[0032] It should be noted that when a component is considered "fixed" to another component, it can be directly fixed to the other component or there can be an intervening component; when a component is considered "connected" to another component, it can be directly connected to the other component or there can be an intervening component; when a component is considered "mounted" on another component, it can be directly mounted on the other component or there can be an intervening component; when a component is considered "placed" on another component, it can be directly placed on the other component or there can be an intervening component.

[0033] This utility model proposes a filter holder 100, such as Figures 1 to 3 As shown, the device includes a support assembly 1 and a holding member 2. The support assembly 1 includes a support base 11 and at least two connecting seats 12. The support base 11 has a first light-transmitting opening 115. The support base 11 is recessed downward with the first light-transmitting opening 115 as the center, forming a slot 111. The slot 111 extends circumferentially along the first light-transmitting opening 115. The holding member 2 is detachably installed on the support base 11, and a clamping position is formed between the holding member 2 and the bottom wall of the slot 111. The holding member 2 has a second light-transmitting opening 23 corresponding to the first light-transmitting opening 115. The two connecting seats 12 are installed circumferentially on the support base 11, and the two connecting seats 12 are arranged diagonally. The connecting seats 12 are provided with suction cups 3.

[0034] Specifically, in this design, the outer edge of the filter 4 is located within the slot 111, and the outer edge of the filter 4 abuts against the bottom wall of the slot 111 and the holding member 2, respectively. Once the holding member 2 is fixed to the support base 11, the filter 4 is confined in the clamping position. The filter 4 is placed within the slot 111, with its outer edge abutting against the bottom wall of the slot 111. The area of ​​the holding member 12 is larger than that of the filter 4. The first light-transmitting opening 114 and the second light-transmitting opening 23 are used for light to pass through and be projected. Thus, by clamping the filter 4 with the holding member 12 and the slot 111 of the support base 11, the area of ​​the clamped filter 4 can be reduced, achieving control over the occlusion rate. Simultaneously, the four edges of the filter 4 are all secured within the slot 111, improving the stability of the filter 4. Furthermore, the support base 11 is fixed to the large surface light source by the suction cup 3, allowing the filter 4 to be installed on the large surface light source with a larger effective area while controlling the occlusion rate. The suction cup 3 has a simple installation method and is compatible with the large surface light source. Moreover, during installation, the filter 4 is placed in the slot 111, and then the clamping member 2 is fixed to the support base 11, which is convenient to operate.

[0035] Furthermore, the support base 11 has a first light-transmitting opening 115, and the holding member 2 has a second light-transmitting opening 23. The first light-transmitting opening 115 corresponds to the second light-transmitting opening 23. When the filter holder 100 is installed at the emitting front end of the light source 202, the light enters the filter 4 through the first light-transmitting opening 115. The filter 4 filters the light, and the filtered light exits through the second light-transmitting opening 23. The filter 4 filters out unwanted spectral components or interfering light from the incident light.

[0036] Preferably, the support base 11 also has a mounting groove 112, which extends circumferentially along the slot 111, and the outer diameter of the mounting groove 112 is larger than the outer diameter of the slot 111; the holding member 2 is disposed in the mounting groove 112. Specifically, this mounting groove 112 is used to engage with the holding member 2. The holding member 2 is engaged in the mounting groove 112, which can fix the filter 4 and improve the stability of the filter 4; moreover, the mounting groove 112 is also formed by the downward indentation of the support base 11, so that the holding members 2 of the filter 4 can be installed sequentially, improving the assembly efficiency.

[0037] To further improve the stability of the holding member 2 in the mounting groove 112, preferably, the support base 11 also has at least two first positioning grooves 113 and a first magnetic member. The two first positioning grooves 113 are disposed within the mounting groove 112 and are arranged opposite to each other. The first magnetic member is installed within the first positioning groove 113. The holding member 2 has a second positioning groove 21, and the second positioning groove 21 is provided with a second magnetic member that cooperates with the first magnetic member. The first positioning groove 113 is used to fix the first magnetic member, improving the stability of the first magnetic member in the first positioning groove 113; the second positioning groove 21 is used to fix the second magnetic member, improving the stability of the second magnetic member in the second positioning groove 21.

[0038] When the holding member 2 is placed in the mounting groove 112, the second magnetic attracting member on the holding member 2 magnetically attracts the first magnetic attracting member of the mounting groove 112, further improving the stability of the holding member 2 in the mounting groove 112.

[0039] Preferably, there is a gap between the outer wall of the clamping member 2 and the inner wall of the support base 11. Specifically, when the clamping member 2 is engaged in the mounting groove 112, there is a gap between the outer wall of the clamping member 2 and the inner wall of the support base 11. This gap facilitates the insertion of a disassembly tool, allowing the disassembly tool to pry open the clamping member 2 and remove the filter 4, thus facilitating the disassembly of the filter holder 100.

[0040] In some embodiments, the support base 11 has a first lifting hole 114 extending from one side of the support base 11 to the other side. The first lifting hole 114 is disposed within the mounting groove 112. The clamping member 2 has a second lifting hole 22, and the first lifting hole 114 communicates with the second lifting hole 22. Specifically, both the first lifting hole 114 and the second lifting hole 22 are used for a pull rope to pass through. The clamping member 2 is connected to the support base 11 by a pull rope. When the clamping member 2 is subjected to external force and falls, the pull rope can promptly catch the clamping member 2.

[0041] Preferably, the filter holder 100 further includes a filter 4, which is installed in the slot 111. The outer surface of the filter 4 is on the same plane as the bottom of the mounting slot 112; the outer surface of the clamping member 2 is on the same plane as the outer surface of the support base 11. Specifically, the outer surface of the filter 4 is on the same plane as the bottom of the mounting slot 112. When the clamping member 2 is engaged with the mounting slot 112, the inner side of the clamping member 2 can just fit against the bottom wall of the mounting slot 112 and the outer surface of the filter 4, improving the stability of the filter 4 in the clamping position.

[0042] Furthermore, the outer surface of the clamping member 2 and the outer surface of the support base 11 are on the same plane, which makes the left and right sides of the filter holder 100 relatively flat, allowing the filter holder 100 to be installed on the light source 202 in both directions, thus improving the installation flexibility of the filter holder 100.

[0043] Preferably, the first end of the connecting seat 12 has a mounting hole 122, and the second end of the connecting seat 12 has a limiting groove 121, which communicates with the mounting hole 122. The first end of the suction cup 3 is installed in the limiting groove 121, and the mounting hole 122 allows fasteners to pass through, so that the suction cup 3 is fixed to the connecting seat 12 by fasteners. The second end of the suction cup 3 has an adsorption surface. Specifically, the suction cup 3 is disposed in the limiting groove 121, and the first end of the suction cup 3 is fixed to the connecting seat 12 by fasteners. The limiting groove 121 can accommodate at least a portion of the suction cup 3, so that the adsorption surface of the suction cup 3 is exposed. The adsorption surface of the suction cup 3 is used to adsorb and fix with the light source 202.

[0044] In this embodiment, the light source 202 generally has a glass cover. The filter holder 100 can be placed at any position on the glass cover as needed. By expelling the air from the suction cup 3, a pressure difference is created inside and outside the suction cup 3, causing the suction cup 3 to adhere to the glass cover. During disassembly, simply move the filter holder 100; the suction cup 3 moves towards the outer edge of the glass cover, allowing air to enter the suction cup 3. Once the air pressure inside and outside the suction cup 3 is equalized, the suction cup 3 can be disassembled, or it can be directly pulled out of the glass cover. Therefore, this suction cup 3 improves the flexibility of the filter holder 100 on the light source 202.

[0045] Preferably, the suction cup 3 has an inverted conical structure, with the adsorption surface located at the maximum end of the suction cup 3 and the minimum end of the suction cup 3 located within the mounting hole 122; the limiting groove 121 has a circular structure, and the outer wall of the suction cup 3 is used to fit against the bottom wall of the limiting groove 121. Specifically, when the suction cup 3 presses against the glass cover, the air inside the suction cup 3 is expelled, the outer wall of the suction cup 3 sinks into the limiting groove 121 and fits against the limiting groove 121, and the suction cup 3 is hidden within the limiting groove 121 by the connecting seat 12 to avoid interference from the external environment in adsorption and fixation of the suction cup 3.

[0046] like Figure 4 As shown, this utility model also proposes a light-emitting device 200, including a light source 202 (large surface light source), a bracket 201, and a filter holder 100 as described above. The light source 202 is mounted on the bracket 201, and the filter holder 100 is mounted on the light source 202, with the filter holder 100 positioned on the light-emitting channel of the light source 202. Specifically, the bracket 201 supports the light source 202, and the filter holder 100 is mounted on the light source 202, improving the flexibility of mounting the filter holder 100 on the light source 202. The light emitted by the light source 202 is filtered by the filter 4, removing unwanted spectral components or interfering light from the incident light.

[0047] When referencing drawings, new features are explained. To avoid redundant references to drawings that would make the description less concise, features already described will not be referenced again on the drawings if the description is clear.

[0048] The purpose of the above embodiments is to reproduce and derive the technical solution of this utility model by way of example, and to fully describe the technical solution, purpose and effect of this utility model. The purpose is to enable the public to have a more thorough and comprehensive understanding of the disclosed content of this utility model, and it is not intended to limit the protection scope of this utility model.

[0049] The above embodiments are not an exhaustive list based on the present invention, and there may be other embodiments not listed. Any substitutions and improvements made without departing from the concept of the present invention are within the protection scope of the present invention.

Claims

1. A filter holder, characterized in that, include: The support assembly and the pressing member, the support assembly includes a support base and at least two connecting bases, the support base has a first light-transmitting opening, the support base is recessed downward with the first light-transmitting opening as the center and forms a slot, the slot is provided to extend circumferentially along the first light-transmitting opening; The holding member is detachably mounted on the support base, and a clamping position is formed between the holding member and the bottom wall of the slot; the holding member has a second light-transmitting opening corresponding to the first light-transmitting opening; Two connectors are installed on the circumference of the support base, and the two connectors are arranged diagonally. Each connector is equipped with a suction cup.

2. The filter holder as described in claim 1, characterized in that, The support base also has a mounting groove that extends circumferentially along the slot and has an outer diameter larger than that of the slot; the holding member is disposed within the mounting groove.

3. The filter holder as described in claim 2, characterized in that, The support base also has at least two first positioning grooves and a first magnetic attractor. The two first positioning grooves are disposed in the mounting groove and are disposed opposite to each other. The first magnetic attractor is installed in the first positioning groove. The holding member has a second positioning groove, and the second positioning groove is provided with a second magnetic attractor that cooperates with the first magnetic attractor.

4. The filter holder as described in claim 3, characterized in that, There is a gap between the outer wall of the pressure member and the inner wall of the support base.

5. The filter holder as described in claim 3, characterized in that, The support base has a first lifting hole that extends from one side of the support base to the other side and is located in a mounting groove. The pressure member has a second lifting hole, and the first lifting hole is used to communicate with the second lifting hole.

6. The filter holder as described in claim 2, characterized in that, The filter holder also has a filter, which is installed in a slot, and the outer surface of the filter is on the same plane as the bottom of the mounting slot. The outer surface of the pressure member and the outer surface of the support base are located on the same plane.

7. The filter holder as described in any one of claims 1 to 6, characterized in that, The first end of the connector has a mounting hole, and the second end of the connector has a limiting groove, which communicates with the mounting hole; the first end of the suction cup is installed in the limiting groove, and the mounting hole allows fasteners to pass through, so that the suction cup is fixed to the connector by fasteners; the second end of the suction cup has an adsorption surface.

8. The filter holder as described in claim 7, characterized in that, The suction cup has an inverted conical structure, with the adsorption surface located at the maximum end of the suction cup and the minimum end of the suction cup located inside the mounting hole; The limiting groove has a circular structure, and the outer wall of the suction cup is used to fit against the bottom wall of the limiting groove.

9. A light-emitting device, characterized in that, The device includes a light source, a bracket, and a filter holder as described in any one of claims 1 to 8, wherein the light source is mounted on the bracket, the filter holder is mounted on the light source, and the filter holder is disposed on the light-emitting channel of the light source.

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