Filtering interference sheet with infrared light prevention function

Abstract

The utility model discloses a filtering interference sheet with a function of preventing infrared light, which comprises an interference sheet body, a round sleeve and a sealing washer, the round sleeve is arranged outside the interference sheet body, the sealing washer is sleeved at one end of the interference sheet body, a film is adhered to the surface of the interference sheet body, a protective layer is arranged inside the interference sheet body, and the protective layer is arranged on the surface of the interference sheet body. The infrared cut-off layer is arranged in the interference sheet body, the multi-half-wave optical filter is arranged on one side of the infrared cut-off layer, the acrylic lens layer is arranged in the interference sheet body, and the pasting film, the infrared cut-off layer, the multi-half-wave optical filter, the glass substrate, the antireflection film and the acrylic lens layer are arranged, so that the outer surface of the interference sheet body is conveniently wrapped; the surface of the glass substrate is coated with the semitransparent metal layer and the magnesium fluoride interlayer, light which is not allowed to penetrate can be filtered out through other absorption type optical filters, and therefore the narrow-passband band-pass optical filter is obtained, and the purpose is that the interference effect can be more comprehensive.

Description

Technical Field

[0001] The utility model relates to the technical field of optical interference filters, in particular to an optical interference filter with an infrared light protection function. Background Art

[0002] Interference filter, commonly known as interference filter, is an optical film that uses the principle of light interference to allow only light in a specific spectral range to pass through. When light passes through a multi-layer film structure, different phase delays will occur. This phase difference will cause light of different wavelengths to be reflected and interfered multiple times in the interference area. Only light that meets the specific wavelength requirements will be superimposed in the interference area to form strong and prominent reflected light, thereby achieving selective filtering of light.

[0003] The interference filter can selectively filter light according to the reflection and interference of light. After the interference filter is processed, it is exposed to the external environment before use, so dust is easily adhered to the surface. In addition, the scratch resistance of the interference filter is poor, and the wavelength transmittance of the filter is low, which will affect the subsequent interference effect. At the same time, the anti-infrared light function of the interference filter needs to be strengthened. For this reason, an interference filter with anti-infrared light function is designed. Utility Model Content

[0004] The utility model aims to provide an interference filter with infrared light protection function to solve the problems in the above background technology that dust easily adheres to the surface, the interference filter has poor scratch resistance and the wavelength transmittance of the filter is low.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a filter interference plate with an infrared light protection function, comprising an interference plate body, a circular sleeve and a sealing gasket, wherein the circular sleeve is arranged on the outside of the interference plate body, the sealing gasket is sleeved on one end of the interference plate body, a film is bonded to the surface of the interference plate body, a protective layer is arranged inside the interference plate body, an infrared cutoff layer is arranged inside the interference plate body, a half-wave filter is arranged on one side of the infrared cutoff layer, an acrylic lens layer is arranged inside the interference plate body, a high refractive index layer is arranged inside the interference plate body, a low refractive index layer is arranged inside the interference plate body, and an anti-reflection film is arranged inside the interference plate body.

[0006] As a preferred technical solution of the utility model, the other side of the infrared cutoff layer is bonded to one side of the protective layer, a silicon-based material layer is provided inside the interference sheet body, and one side of the high refractive index layer is bonded to one side of the silicon-based material layer.

[0007] As a preferred technical solution of the utility model, the thickness of the infrared cut-off layer is greater than the thickness of the protective layer, and a glass substrate is arranged inside the interference sheet body.

[0008] As a preferred technical solution of the utility model, one side of the glass substrate and one side of the low refractive index layer are bonded to each other.

[0009] As a preferred technical solution of the utility model, the thickness of the glass substrate is less than the thickness of the low refractive index layer.

[0010] As a preferred technical solution of the utility model, the multi-half-wave filter is arranged inside the interference plate body, and the diameter of the sealing gasket is larger than the diameter of the interference plate body.

[0011] As a preferred technical solution of the utility model, one side of the acrylic lens layer is bonded to one side of the multi-half-wave filter, and the thickness of the acrylic lens layer is greater than the thickness of the multi-half-wave filter.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The utility model discloses an interference filter with infrared light protection function. The interference filter comprises a film, an infrared cut-off layer, a multi-half-wave filter, a glass substrate, an anti-reflection film and an acrylic lens layer. The film is a transparent thin film layer, which is convenient for wrapping the outer surface of the interference plate body and has a dust-proof effect. The infrared cut-off layer is made of a material capable of absorbing and reflecting infrared light and can effectively prevent infrared light from passing through. The multi-half-wave filter can improve the performance of the cut-off band. The anti-reflection film has specific optical properties to reduce reflection and scattering losses, thereby improving wavelength transmittance. The acrylic lens layer has a relatively high hardness, thereby improving the scratch resistance and wear resistance of the interference plate body. The surface of the glass substrate is coated with a translucent metal layer and a magnesium fluoride interlayer. Other absorption filters can be used to filter out light that is not allowed to pass through, thereby obtaining a narrow passband bandpass filter, so as to make the interference effect more comprehensive.

[0014] 2. The utility model provides an interference filter with an infrared light protection function. The protective layer, the silicon-based material layer, the high refractive index layer and the low refractive index layer are provided. The protective layer is provided on the surface of the interference plate body by vacuum evaporation, which can improve the durability and wavelength transmittance of the interference plate body. The material provided in the silicon-based material layer can absorb and reflect infrared light in a specific wavelength range. The silicon base is a material with specific optical properties. The high refractive index layer is made of titanium dioxide, and the low refractive index layer is made of silicon fluoride. The two are alternately stacked to form an interference effect, which can realize the transmission and reflection of light of a specific wavelength, thereby improving the light filtering performance of the interference plate body. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a front view structural schematic diagram of the utility model;

[0016] Figure 2It is a partial side cross-sectional structural schematic diagram of the utility model;

[0017] Figure 3 For the utility model Figure 2 The enlarged view of point A in the middle;

[0018] Figure 4 It is a side structural schematic diagram of the utility model.

[0019] In the figure: 1. interference plate body; 2. round sleeve; 3. sealing gasket; 4. film; 401. protective layer; 402. infrared cutoff layer; 403. multi-half-wave filter; 5. acrylic lens layer; 501. silicon-based material layer; 502. high refractive index layer; 503. low refractive index layer; 504. glass substrate; 6. anti-reflection film. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-4 The utility model provides a technical solution for an interference filter with infrared light protection function:

[0022] Embodiment 1:

[0023] like Figure 1-3 As shown, the filter interference plate with infrared light protection function comprises an interference plate body 1, a round sleeve 2 and a sealing gasket 3, wherein the round sleeve 2 is arranged on the outside of the interference plate body 1, the sealing gasket 3 is sleeved on one end of the interference plate body 1, a film 4 is bonded to the surface of the interference plate body 1, a protective layer 401 is arranged inside the interference plate body 1, an infrared cut-off layer 402 is arranged inside the interference plate body 1, a half-wave filter 403 is arranged on one side of the infrared cut-off layer 402, an acrylic lens layer 5 is arranged inside the interference plate body 1, and an infrared cut-off layer 402 is arranged on one side of the infrared cut-off layer 402. A high refractive index layer 502 is arranged inside the interference sheet body 1, a low refractive index layer 503 is arranged inside the interference sheet body 1, and an anti-reflection film 6 is arranged inside the interference sheet body 1. The anti-reflection film 6 has specific optical properties to reduce reflection and scattering losses, thereby improving wavelength transmittance. The acrylic lens layer 5 has a high hardness, thereby improving the scratch resistance and wear resistance of the interference sheet body 1. The surface of the glass substrate 504 is coated with a translucent metal layer and a magnesium fluoride interlayer. Other absorption filters can be used to filter out light that is not allowed to pass through.

[0024] Embodiment 2:

[0025] Based on the first embodiment, Figure 1 and Figure 4 As shown, the multi-half-wave filter 403 is arranged inside the interference plate body 1, the diameter of the sealing gasket 3 is larger than the diameter of the interference plate body 1, one side of the acrylic lens layer 5 is in contact with one side of the multi-half-wave filter 403, and the thickness of the acrylic lens layer 5 is larger than the thickness of the multi-half-wave filter 403. The utility model has an infrared light-proof filter interference plate, which is provided with a protective layer 401, a silicon-based material layer 501, a high refractive index layer 502 and a low refractive index layer 503. The protective layer 401 is arranged on the surface of the interference plate body 1 by vacuum evaporation, which can improve the durability and wavelength transmittance of the interference plate body 1. The material provided in the silicon-based material layer 501 can absorb and reflect infrared light in a specific wavelength range.

[0026] Working principle: interference filter, commonly known as interference filter, is an optical film that uses the principle of light interference to allow only light in a specific spectral range to pass through. When light passes through a multi-layer film structure, different phase delays will occur. This phase difference will cause light of different wavelengths to reflect and interfere multiple times in the interference area. Only light that meets the requirements of a specific wavelength will be superimposed in the interference area to form a strong and prominent reflected light, thereby achieving selective filtering of light. The interference sheet body 1 and the circular sleeve 2 are limited by a sealing gasket 3 to ensure the sealing performance of the two. After the interference sheet body 1 is manufactured, the surface of the interference sheet body 1 needs to be wrapped. At this time, the film 4 can be used to bond the surfaces to each other. The film 4 is a transparent film layer, which is convenient for wrapping the outer surface of the interference sheet body 1 and has a dust-proof effect. The film 4 can be torn off outwards, and the film 4 can be separated from the outer surface of the interference sheet body 1, which is convenient for the separation of the two. The infrared cutoff layer 402 is made of a material that can absorb and reflect infrared light, which can effectively prevent infrared light from passing through the interference sheet body 1. External light is transmitted, and the multi-half-wave filter 403 can improve the performance of the cut-off band. The anti-reflection film 6 has specific optical properties to reduce reflection and scattering losses, thereby improving the wavelength transmittance. The acrylic lens layer 5 has a high hardness, thereby improving the scratch resistance and wear resistance of the interference plate body 1. The surface of the glass substrate 504 is coated with a translucent metal layer and a magnesium fluoride interlayer. Other absorption filters can be used to filter out light that is not allowed to pass through, thereby obtaining a narrow passband bandpass filter, the purpose of which is to make the interference effect more comprehensive. The protective layer 401 is arranged on the surface of the interference plate body 1 by vacuum evaporation, which can improve the durability and wavelength transmittance of the interference plate body 1. The material set in the silicon-based material layer 501 can absorb and reflect infrared light in a specific wavelength range. The silicon base is a material with specific optical properties. The high refractive index layer 502 is made of titanium dioxide, and the low refractive index layer 503 is made of silicon fluoride. The two are alternately stacked to form an interference effect, which can achieve the transmission and reflection of light of a specific wavelength, thereby improving the filtering performance of the interference plate body 1.

[0027] In the description of the present invention, it is necessary to understand that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0028] In the present invention, unless otherwise clearly stipulated and limited, for example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, for ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0029] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A filter interference plate with infrared light protection function, comprising an interference plate body (1), a circular sleeve (2) and a sealing gasket (3), wherein the circular sleeve (2) is arranged outside the interference plate body (1), and the sealing gasket (3) is sleeved on one end of the interference plate body (1), characterized in that: The surface of the interference sheet body (1) is bonded with a film (4); the interior of the interference sheet body (1) is provided with a protective layer (401); the interior of the interference sheet body (1) is provided with an infrared cutoff layer (402); one side of the infrared cutoff layer (402) is provided with a half-wave filter (403); the interior of the interference sheet body (1) is provided with an acrylic lens layer (5); the interior of the interference sheet body (1) is provided with a high refractive index layer (502); the interior of the interference sheet body (1) is provided with a low refractive index layer (503); and the interior of the interference sheet body (1) is provided with an anti-reflection film (6).

2. The interference filter with infrared light protection function according to claim 1, characterized in that: The other side of the infrared cutoff layer (402) is bonded to one side of the protective layer (401), a silicon-based material layer (501) is provided inside the interference film body (1), and one side of the high refractive index layer (502) is bonded to one side of the silicon-based material layer (501).

3. The interference filter with infrared light protection function according to claim 2, characterized in that: The thickness of the infrared cut-off layer (402) is greater than the thickness of the protective layer (401), and a glass substrate (504) is arranged inside the interference sheet body (1).

4. The interference filter with infrared light protection function according to claim 3, characterized in that: One side of the glass substrate (504) and one side of the low refractive index layer (503) are bonded to each other.

5. The interference filter with infrared light protection function according to claim 4, characterized in that: The thickness of the glass substrate (504) is smaller than the thickness of the low refractive index layer (503).

6. The interference filter with infrared light protection function according to claim 1, characterized in that: The multi-half-wave filter (403) is arranged inside the interference plate body (1), and the diameter of the sealing gasket (3) is larger than the diameter of the interference plate body (1).

7. The interference filter with infrared light protection function according to claim 1, characterized in that: One side of the acrylic lens layer (5) is bonded to one side of the multi-half-wave filter (403), and the thickness of the acrylic lens layer (5) is greater than the thickness of the multi-half-wave filter (403).

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