Photochromic Eye-Protective Device Based on Triplet Absorption

机译：基于三重吸收的光致变色眼保护装置

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A prototype 6 x 8-inch photochromic windshield segment was developed and delivered to the Air Force. The device is designed to protect pilots against flash blindness caused by exposure to nuclear explosions. The reversible photochromic darkening is based upon absorption of visible light by metastable triplet states of aromatic molecules. The active compounds are incorporated into solid sheets of transparent plastic. Three sheets of plastic are arranged in an N-type configuration and the triplet states are produced by UV excitation from two flash lamps. Black glass filters prevent visible light from the flash lamps from dazzling the observer. With a 1900 joule input to the flash lamps, the triplet-state windshield segment attains within one millisecond an optical density, weighted for eye-response, that varies from 1.4 along a line midway between the flash lamps to 2.7 close to each flash lamp. The open-state transmittance is 65% and the device re-opens to one-half this transmittance in approximately 2 seconds. (Author)

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Windsor, M. W.; Dawson, W. R.; Moore, R. S.;
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年度 1966
页码 p.1-106
总页数 106
原文格式 PDF
正文语种 eng
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关键词
Photochromism ; Windshields ; Polycyclic compounds ; Molecular energy levels ; Absorption spectrum ; Plastics ; Excitation ; Ultraviolet radiation ; Acrylic resins ; Styrene plastics ; Material forming ; Luminescence ; Shutters(Optics) ; Power supplies ; Flashblindness;

机译：光致变色;挡风玻璃;多环化合物;分子能级;吸收光谱;塑料;激发;紫外线辐射;丙烯酸树脂;苯乙烯塑料;材料成形;发光;百叶窗（光学）;电源;闪光盲;

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机译：用于光致变色器件的有机分子中的三重态至三重吸收

Photochromic Eye-Protective Device Based on Triplet Absorption

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