Crystal coated near-infrared low-pass filter and manufacturing method

A technology of low-pass filter and manufacturing method, applied in instruments, filters, applications, etc., can solve the problem of easy falling off of the ink layer, and achieve the effect of good infrared absorption effect, uniform ink coating and good adhesion effect.

Pending Publication Date: 2018-05-04
WENLING MODERN CRYSTAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a crystal-coated near-infrared low-pass filter and a manufacturing method thereof, which prepares an ink with good

Method used

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  • Crystal coated near-infrared low-pass filter and manufacturing method
  • Crystal coated near-infrared low-pass filter and manufacturing method
  • Crystal coated near-infrared low-pass filter and manufacturing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A preparation method of infrared absorbing ink for crystal, comprising the following steps:

[0025] S1. In parts by weight, mix 13 parts of n-propanol, 52 parts of N,N-dimethylformamide, and 35 parts of ethylene glycol ether to obtain a solvent, then mix 5 parts of copper phthalocyanine sulfonic acid, 2 parts of phthalocyanine Magnesium cyanine and 2.5 parts of vanadyl naphthalocyanine were added to the solvent, and after ultrasonic dispersion, 0.3 part of ethoxylamine was added, and the infrared absorption solution was obtained after stirring at 1300 rpm at 50 ° C for 15 minutes;

[0026] S2. In parts by weight, add 16 parts of acrylate copolymer to the infrared absorbing solution prepared in S1, mix at room temperature at a speed of 1800 rpm, then pass nitrogen gas for 20 minutes, then add 0.15 parts of silane coupling agent KH570, Heat at 60°C for 28 minutes, then cool down to normal temperature to obtain infrared absorbing ink.

[0027] The preparation method of t...

Embodiment 2

[0029] A preparation method of infrared absorbing ink for crystal, comprising the following steps:

[0030] S1. In parts by weight, mix 10 parts of n-propanol, 57 parts of N,N-dimethylformamide, and 38 parts of ethylene glycol ether to obtain a solvent, then mix 3 parts of copper phthalocyanine sulfonic acid, 2.5 parts of phthalocyanine Magnesium cyanine and 3 parts of vanadyl naphthalocyanine were added to the solvent, and after ultrasonic dispersion, 0.2 parts of ethoxylamine was added, and stirring was continued at 52°C at a speed of 1500 rpm, and an infrared absorption solution was obtained after stirring for 10 minutes;

[0031] S2. In parts by weight, add 17 parts of acrylate copolymer to the infrared absorbing solution prepared in S1, mix at room temperature at a speed of 2000 rpm, then pass nitrogen gas for 20 minutes, then add 0.13 parts of silane coupling agent KH570, Heat at 61°C for 30 minutes, then cool down to room temperature to obtain an infrared absorbing ink....

Embodiment 3

[0034] A preparation method of infrared absorbing ink for crystal, comprising the following steps:

[0035] S1. In parts by weight, mix 12 parts of n-propanol, 61 parts of N,N-dimethylformamide, and 33 parts of ethylene glycol ether to obtain a solvent, then mix 4 parts of copper phthalocyanine sulfonic acid, 3 parts of phthalocyanine Magnesium cyanine and 2 parts of vanadyl naphthalocyanine were added to the solvent, and after ultrasonic dispersion, 0.25 parts of ethoxylamine was added, and stirring was continued at 55°C at a speed of 1200 rpm, and an infrared absorption solution was obtained after stirring for 14 minutes;

[0036] S2. In parts by weight, add 19 parts of acrylate copolymer to the infrared absorbing solution prepared in S1, mix at room temperature at a speed of 1500 rpm, then pass nitrogen gas for 20 minutes, then add 0.14 parts of silane coupling agent KH570, Heat at 61°C for 30 minutes, then cool down to room temperature to obtain an infrared absorbing ink. ...

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PUM

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Abstract

The invention discloses a crystal coated near-infrared low-pass filter and a manufacturing method. Infrared absorbing ink is prepared from n-propanol, N,N-dimethylformamide, ethylene glycol monomethylether, an acrylate copolymer, copper phthalocyanine sulfonic acid, magnesium phthalocyanine, vanadyl naphthalocyanine, linseed oil, ethoxyamine and a silane coupling agent KH570. The crystal coated near-infrared low-pass filter comprises a sleeve, a lens arranged in the sleeve as well as an adhesive layer arranged between the sleeve and the lens, wherein the lens comprises a dustproof film, an infrared cut-off film, an ink layer, a crystal piece I, a crystal piece II, a crystal piece III and an anti-reflection film, the ink layer is arranged between the crystal piece I and the crystal piece II, the crystal piece III is arranged at the lower end of the crystal piece II, the anti-reflection film is arranged at the lower end of the crystal piece III, the infrared cut-off film is arranged at the upper end of the crystal piece I, and the dustproof film is arranged at the upper end of the infrared cut-off film. The problem of high probability of peeling off of the ink layer is solved.

Description

technical field [0001] The invention relates to a crystal-coated near-infrared low-pass filter and a manufacturing method. Background technique [0002] Optical low-pass filters are mostly composed of two or more quartz crystal thin plates, placed in front of the CCD sensor. The beam of the target image information produces birefringence after passing through the OLPF. The sampling cutoff frequency is calculated according to the size of the CCD pixel and the total photosensitive area. At the same time, the distance between the o light and the e light can be calculated. Changing the incident beam will form a difference frequency The target frequency can be used to weaken or eliminate low-frequency interference fringes, especially the false color interference fringes of color CCD. [0003] In addition, when using a CCD or CMOS image sensor to shoot a color scene, because their reaction to color is different from that of the human eye, it is necessary to remove the infrared pa...

Claims

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Application Information

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IPC IPC(8): G02B5/20G02B5/22C08F220/18C09D11/03C09D11/107
CPCG02B5/208G02B5/223C09D11/03C09D11/107C08F220/18C08F220/1804C08F220/06C08F220/14
Inventor 葛文志葛文琴王懿伟矢岛大和闪雷雷
Owner WENLING MODERN CRYSTAL
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