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UV (Ultraviolet)-NIR (Near-Infrared) dual band absorbing optical filter and preparation method thereof

A near-infrared absorber and ultraviolet absorber technology, applied in optics, optical components, instruments, etc., can solve the problem of not being able to protect the laser at the same time, and achieve the effects of small chromatic aberration, good mechanical properties, and simple and fast preparation process

Active Publication Date: 2014-05-21
NANJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide an ultraviolet-near-infrared dual-band absorption filter for the problem that the current plastic absorption filter cannot simultaneously protect lasers in the 200nm-400nm band and the 700nm-900nm band range. Another object of the invention is to provide a preparation method for the above-mentioned ultraviolet-near-infrared dual-band absorption filter, which has good cut-off performance for lasers in the range of 200nm to 400nm and 700nm to 900nm, and at the same time ensures a certain range of visible light. Transmittance

Method used

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  • UV (Ultraviolet)-NIR (Near-Infrared) dual band absorbing optical filter and preparation method thereof
  • UV (Ultraviolet)-NIR (Near-Infrared) dual band absorbing optical filter and preparation method thereof
  • UV (Ultraviolet)-NIR (Near-Infrared) dual band absorbing optical filter and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (1) Select polycarbonate as the optical polymer matrix material, 100 parts by mass, seal and dry at 120°C for 6 hours, and set aside;

[0027] (2) Absorbent component: benzotriazole UV-360 (molecular formula: C 41 h 50 N 6 o 2 ), 0.5 parts by mass; o-phenylenediamine cobalt complex dye (molecular formula: Co[C 6 h 4 -(NH) 2 ] 2 ), 0.03 parts by mass; thiodiene nickel complex dye (molecular formula: C 28 h 20 NeS 4 ), 0.04 parts by mass;

[0028] (3) Put the polycarbonate particles described in (1) and the three absorbent powders described in (2) into the mixing tank, set the barrel speed to 180r / min, and pre-mix for 60min;

[0029] (4) Take out the mixing tank, add 0.5g liquid paraffin, and mix for 3 hours to obtain dark green translucent masterbatch;

[0030] (5) Set the parameters of the injection molding machine according to the injection molding requirements of polycarbonate;

[0031] (6) Carry out injection molding of the color masterbatch prepared in (...

Embodiment 2

[0037] (1) Select polymethyl methacrylate as the optical polymer matrix material, 100 parts by mass, seal and dry at 80°C for 5 hours, and set aside;

[0038] (2) Absorbent component: benzotriazole UV-360 (molecular formula: C 41 h 50 N 6 o 2 ), 0.4 parts by mass; o-phenylenediamine cobalt complex dye (molecular formula: Co[C 6 h 4 -(NH) 2 ] 2), 0.02 parts by mass; antimony hexafluoride radical arylamine dye (molecular formula: C 62 h 92 N 6 .SbF 6 ), 0.03 parts by mass;

[0039] (3) Put the polymethyl methacrylate particles described in (1) and the three absorbent powders described in (2) into the mixing tank, set the barrel speed to 200r / min, premix 50min;

[0040] (4) Take out the mixing tank, add 0.4g liquid paraffin, and mix for 2.5 hours to obtain dark green translucent masterbatch;

[0041] (5) Set the parameters of the injection molding machine according to the injection molding requirements of polymethyl methacrylate;

[0042] (6) Carry out injection mol...

Embodiment 3

[0048] (1) Select polymethyl methacrylate as the optical polymer matrix material, 100 parts by mass, seal and dry at 90°C for 4 hours, and set aside;

[0049] (2) Absorbent component: benzophenone UV-531 (molecular formula: C 21 h 26 o 3 ), 0.6 parts by mass; indole bromide polymethine cyanine dye (molecular formula: C 32 h 36 ClN 2 .Br), 0.02 parts by mass; thiodiene nickel complex dye (molecular formula: C 28 h 20 NeS 4 ), 0.03 parts by mass;

[0050] (3) Put the polymethyl methacrylate particles described in (1) and the three kinds of absorbent powders described in (2) into the mixing tank, set the barrel speed to 220r / min, premix 40min;

[0051] (4) Take out the mixing tank, add 0.3g liquid paraffin, and mix for 2.5 hours to obtain dark green translucent masterbatch;

[0052] (5) Set the parameters of the injection molding machine according to the injection molding requirements of polymethyl methacrylate;

[0053] (6) Carry out injection molding of the color mas...

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PUM

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Abstract

The invention relates to a UV (Ultraviolet)-NIR (Near-Infrared) dual band absorbing optical filter and a preparation method thereof. The optical filter comprises the following raw material components in parts by weight: 0.3-0.6 parts of ultraviolet absorbent, 0.02-0.03 parts of low band near-infrared absorbent, 0.03-0.05 parts of high band near-infrared absorbent, 100 parts of optical aggregate granules, and 0.025-0.05 parts of liquid paraffin. The preparation method comprises the steps of selecting an optical polymer with higher visible light transmittance as a base material, and obtaining the optical filter with absorbent molecules uniformly distributed in the optical polymer base material by using a method of injection moulding after optical polymer grains and the absorbent are blended and granulated. The optical filter has a good cut-off property on laser with the wave band ranges of 200-400nm and 700-900nm, and guarantees the certain transmittance of visible light areas simultaneously.

Description

technical field [0001] The invention belongs to the technical field of laser protection materials, and relates to an ultraviolet-near-infrared dual-band absorption filter and a preparation method thereof. Background technique [0002] Laser has excellent performances such as fast, accurate, good directionality, and less electromagnetic interference. At present, laser technology has been widely used in military, medical, scientific research and other fields. At the same time, the radiation hazards and protection problems brought about by it have been paid more and more attention. . The objects of laser protection are mainly human eyes and photoelectric sensors. Using filters to reduce the incident laser intensity of specific wavelengths is a direct and effective means of protection. The working band of the filter can cover the ultraviolet, visible and infrared bands. According to the working principle, it can be divided into two types: absorption filter and interference filt...

Claims

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Application Information

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IPC IPC(8): G02B5/22G02B1/04
Inventor 张其土杨凯元张乐王丽熙
Owner NANJING UNIV OF TECH
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