Narrowband filter with high transmittance

Abstract

The utility model relates to the technical field of optical accessories, in particular to a high-transmissivity narrow-band filter, which comprises a protective ring, a light absorption coating and an anti-skid rubber ring are respectively mounted in an inner cavity of the protective ring, a filter body is mounted on an inner ring of the anti-skid rubber ring, and a positioning anti-falling component is mounted on the outer side of the protective ring. Each positioning anti-disengaging assembly comprises a clamping plate and a clamping groove, the number of the positioning anti-disengaging assemblies is three, the positioning anti-disengaging assemblies are circumferentially distributed on the protection ring, the clamping plates are matched with the clamping grooves, the clamping grooves are formed in the outer circle of the protection ring, and the surfaces of the clamping plates make sliding contact with the inner walls of the clamping grooves. According to the utility model, the positioning anti-falling component is arranged, so that the device has the advantage of positioning installation, the angles of the protection rings can be adjusted after the two protection rings are aligned up and down, and then the protection rings slide into the clamping plates and are placed in the clamping grooves, so that the installation stability between the upper protection ring and the lower protection ring can be ensured, and the good attachment between the two protection rings is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to optical accessory technical field especially a high transmissivity narrow band filter piece. BACKGROUND

[0002] Narrow band filter piece is a kind of optical element, its main function is to allow the light in specific wavelength range to pass through, while preventing other wavelengths of light, its passband width is relatively narrow, usually not more than 5% of central wavelength, widely used in multiple fields, including astronomy, biomedical, environmental monitoring and communication.

[0003] Through the retrieval, the announcement number for CN211402805U, name is a kind of narrow band filter, including installation shell, by research analysis finds, although it has the advantages of quick and stable installation, but, to some extent, there is the following shortcoming.

[0004] For example, in actual use, in order to filter multiple colors, multiple filters are usually used to overlap installation, the accessory cannot be conveniently positioned up and down, leading to multiple accessories cannot be stably installed, and installation gap is prone to exist, light is randomly refracted to affect subsequent observation effect, there is certain limitation, in order to solve the above technical problems, therefore we design a kind of high transmissivity narrow band filter piece. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a kind of high transmissivity narrow band filter piece, it has the advantage of positioning installation, solves the accessory cannot be conveniently positioned up and down, leading to multiple accessories cannot be stably installed, and installation gap is prone to exist, light is randomly refracted to affect subsequent observation effect problem.

[0006] To achieve the above object, the utility model provides the following technical scheme: a kind of high transmissivity narrow band filter piece, including protection ring, the inner cavity of the protection ring is respectively installed with light-absorbing coating and anti-skid rubber ring, the inner ring of the anti-skid rubber ring is installed with filter piece body, the outer side of the protection ring is installed with positioning anti-drop assembly, the positioning anti-drop assembly includes clamping plate and clamping groove.

[0007] Preferably, the number of positioning anti-drop assembly is three, and is circumferentially distributed on protection ring.

[0008] Preferably, the clamping plate is matched with the clamping groove, and the clamping groove is opened in the outer circle of protection ring.

[0009] Preferably, the surface of the clamping plate is slidably contacted with the inner wall of the clamping groove, and the surface of the clamping plate is fixedly embedded with damping strip.

[0010] Preferably, the number of the light-absorbing coating is two, the anti-skid rubber ring is fixedly installed at the center of the inner cavity of the protection ring, the two light-absorbing coatings are fixedly installed on the inner wall of the protection ring and are located at the top and bottom of the anti-skid rubber ring respectively.

[0011] Preferably, the top and bottom of the protection ring are provided with grooves, and the inner cavities of the grooves are provided with sealing rubber rings.

[0012] Compared with the prior art, the utility model has the advantages that:

[0013] The utility model discloses a positioning anti -drop subassembly has the advantage that positioning installation can adjust the angle of the protection ring after the two protection rings are aligned, then slide into the clamping plate and place in the clamping groove, can guarantee the stability of the installation between the two protection rings, guarantees the good adhesion between the two protection rings. ACCURACY OF DRAWINGS

[0014] Figure 1 It is the structure of the utility model three -dimensional schematic diagram;

[0015] Figure 2 It is the structure of the utility model sectional view three -dimensional diagram;

[0016] Figure 3 It is the structure of the utility model when separating three -dimensional diagram.

[0017] In the drawing: 1, protection ring;2, positioning anti -drop subassembly;201, clamping plate;202, clamping groove;203, damping strip;3, filter body;4, light-absorbing coating;5, anti-skid rubber ring;6, groove;7, sealing rubber ring. CONCRETE IMPLEMENTING METHOD

[0018] Please refer to Figures 1-3 A high-transmittance narrowband filter, comprising a protection ring 1, the inner cavities of the protection ring 1 are provided with a light-absorbing coating 4 and an anti-skid rubber ring 5, by setting the light-absorbing coating 4, the light reflected on the filter body 3 can be absorbed, the interference factor is reduced, the subsequent observation clarity is guaranteed, the inner ring of the anti-skid rubber ring 5 is provided with the filter body 3, by setting the anti-skid rubber ring 5, the filter body 3 can be elastically prevented and skid-mounted, the installation stability of the filter body 3 is guaranteed, the outer side of the protection ring 1 is provided with a positioning anti -drop subassembly 2, the positioning anti -drop subassembly 2 includes a clamping plate 201 and a clamping groove 202;

[0019] Please refer to Figure 1 And Figure 3 The number of the positioning anti -drop subassembly 2 is three, and is circumferentially distributed on the protection ring 1;

[0020] Please refer to Figure 2 And Figure 3, the clamping plate 201 is matched with the clamping groove 202, and the clamping groove 202 is formed in the outer ring of the protection ring 1;

[0021] Please refer to Figure 1 , Figure 2 and Figure 3 The surface of the clamping plate 201 is in sliding contact with the inner wall of the clamping groove 202. By arranging the clamping plate 201 and the clamping groove 202, the positioning and clamping effect can be achieved, thereby ensuring the stability of the installation of the upper and lower protection rings 1. Since the clamping plate 201 and the clamping groove 202 are both plate straight designs, the single protection ring 1 cannot be driven to rotate in the installed state of the clamping plate 201 and the clamping groove 202. The surface of the clamping plate 201 is fixedly embedded with a damping strip 203. By arranging the damping strip 203, the contact friction between the clamping plate 201 and the clamping groove 202 can be effectively increased, achieving the effect of anti-skid protection.

[0022] Please refer to Figure 2 and Figure 3 The number of light-absorbing coatings 4 is two, and the anti-skid rubber ring 5 is fixedly installed at the center of the inner cavity of the protection ring 1. The two light-absorbing coatings 4 are both fixedly installed on the inner wall of the protection ring 1 and are respectively located at the top and bottom of the anti-skid rubber ring 5.

[0023] Please refer to Figure 3 The top and bottom of the protection ring 1 are both provided with a groove 6, and the inner cavity of the groove 6 is provided with a sealing rubber ring 7. By arranging the groove 6 and the sealing rubber ring 7, the groove 6 can meet the space requirement of the sealing rubber ring 7. In the abutting installation state of the two protection rings 1, the sealing rubber ring 7 is compressed to ensure the installation sealing between the two protection rings 1.

[0024] The filter body 3 is a high-transmittance narrow-band filter disclosed in Chinese Patent Application No. 202010471578.0, a quasi-rectangular narrow-band filter with wide cutoff and high transmittance.

[0025] In use, each component is in an initial state. When multiple protection rings 1 need to be stacked to meet the actual filtering requirement, the two protection rings 1 are moved close to each other, the angle of the protection ring 1 is adjusted so that the clamping groove 202 is in an aligned state, and then the protection ring 1 is pressed with force so that the sealing rubber ring 7 is compressed. Then the clamping plate 201 is moved into the clamping groove 202 to complete the quick positioning and installation.

[0026] In summary: the high-transmittance narrow-band filter solves the problem that the accessory cannot be conveniently positioned and operated up and down, resulting in unstable installation between multiple accessories and easy existence of installation gaps, and random refraction of light affecting subsequent observation effect by arranging the positioning and anti-falling assembly 2.

Claims

1. A high-transmission narrow-band filter comprising a protective ring (1), characterized in that: The inner cavity of the protection ring (1) is respectively provided with a light-absorbing coating (4) and an anti-skid rubber ring (5), the inner ring of the anti-skid rubber ring (5) is provided with a filter body (3), the outer side of the protection ring (1) is provided with a positioning anti-off component (2), and the positioning anti-off component (2) comprises a clamping plate (201) and a clamping groove (202).

2. A high-transmission narrow-band filter according to claim 1, characterized in that: The number of the positioning anti-off component (2) is three, and they are circumferentially distributed on the protection ring (1).

3. The high-transmission narrow-band filter according to claim 1, characterized in that: The clamping plate (201) is matched with the clamping groove (202), and the clamping groove (202) is arranged on the outer ring of the protection ring (1).

4. The high-transmission narrow-band filter according to claim 1, characterized in that: The surface of the clamping plate (201) is in sliding contact with the inner wall of the clamping groove (202), and the surface of the clamping plate (201) is fixedly embedded with a damping strip (203).

5. The high-transmission narrow-band filter according to claim 1, characterized in that: The number of the light-absorbing coating (4) is two, the anti-skid rubber ring (5) is fixedly arranged at the center of the inner cavity of the protection ring (1), and the two light-absorbing coatings (4) are fixedly arranged on the inner wall of the protection ring (1) and are respectively located at the top and bottom of the anti-skid rubber ring (5).

6. A high-transmission narrow-band filter according to claim 1, characterized in that: The top and bottom of the protection ring (1) are provided with recesses (6), and the inner cavities of the recesses (6) are provided with sealing rubber rings (7).

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