Infrared band-pass optical filter, preparation method thereof and imaging device with infrared band-pass optical filter
A band-pass filter and filter technology, applied in the field of optics, can solve the problem of non-environmental protection of materials, drift of optical transmittance curve, difficulty of passing infrared band-pass filter, resistance to UV and high and low temperature cold and heat shock Test and other problems, to achieve excellent stability and reliability, the effect of small curve drift
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preparation example Construction
[0069]According to another aspect of the present invention, there is also provided a method for preparing an infrared bandpass filter, comprising the following steps: S1, stirring and mixing raw materials including a resin material and a visible light absorbing material to obtain a coating liquid; S2, mixing The coating liquid is coated on the substrate layer 10, dried and peeled off to obtain an absorbing layer 20 formed from the coating liquid; S3, forming a surface hardened layer 30 on at least one side of the absorbing layer 20, and the prepared infrared bandpass filter The structure of the light sheet is as figure 2 shown.
[0070] In a preferred embodiment, in the above step S2, the coating liquid is coated on one side surface of the substrate layer 10, dried, and not separated to form the absorbent layer 20 stacked in the substrate 10, Then form a surface hardening layer 30 on one side surface of the absorbing layer 20, and the structure of the infrared bandpass filte...
Embodiment 1
[0079] Example 1 (organic silicon)
[0080] The infrared bandpass filter provided in this embodiment includes an absorbing layer 20 containing a visible light absorbing material; a surface hardening layer 30 is disposed on at least one side of the absorbing layer.
[0081] Wherein the substrate layer 10 is a transparent substrate, and the material of the transparent substrate may be quartz glass, borosilicate glass, etc., specifically K9, BK70, D263T, AF32, EagleXG, H-ZPK5, H-ZPK7, etc. Exemplarily, the substrate layer 10 can be a transparent sheet, figure 2 The up and down direction in the above is the thickness direction of the transparent sheet, and the upper side and the lower side of the transparent sheet are opposite.
[0082] The preparation method of the above-mentioned infrared band-pass filter includes: adding two-component silicone resin OE-6560 (Dow Chemical) and 1:1 weight of toluene together and mixing evenly, stirring until a transparent and colorless liquid, ...
Embodiment 2
[0084] Example 2 (Acrylic Coated Organic Substrate)
[0085] The infrared bandpass filter provided in this embodiment includes an absorbing layer 20 containing a visible light absorbing material; a surface hardening layer 30 is disposed on at least one side of the absorbing layer.
[0086] Wherein the substrate layer 10 is a transparent substrate, and the material of the transparent substrate may optionally be acrylic plexiglass, PC board, PET board and film. Exemplarily, the substrate layer 10 can be a transparent sheet, figure 2 The up and down direction in the above is the thickness direction of the transparent sheet, and the upper side and the lower side of the transparent sheet are opposite.
[0087] The preparation method of the above-mentioned infrared band-pass filter includes: mixing polyhydroxy acrylic resin A-405 (commercially available from Di Aisheng Synthetic Resin (Zhongshan) Co., Ltd.), cyclohexanone (Sinopharm Chemicals of China) in a ratio of 1:1 , add tog...
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Abstract
Description
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Application Information
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