文章基本信息

标题：色温度を上げる液晶フィルタの設計と試作
本地全文：下载
作者：藤掛英夫 ; 佐藤弘人 ; 飯野芳己等
期刊名称：映像情報メディア学会誌
印刷版ISSN：1342-6907
电子版ISSN：1881-6908
出版年度：2002
卷号：56
期号：9
页码：1475-1480
DOI：10.3169/itej.56.1475
出版社：The Institute of Image Information and Television Engineers
摘要：A new type of electrically controlled optical filter to heighten the color temperature of incident light has been developed that is comprised of guest-host mode liquid-crystal devices containing dichroic dyes. The transmission spectrum of the filter was designed as the ratio of different radiation spectra based on the black body radiation theory. The absorption for long-wavelength visible light is varied according to the liquid crystal alignment change for voltage applied to the filter. When white light with a color temperature of 5700K was incident on a filter fabricated with 6μm-thick liquid-crystal layers, the color temperature of light transmitted from the filter could continuously be changed from 6000K to 11000K by voltage control of less than 10 Vrms. The electrooptic response time was as fast as 50 ms. This liquid crystal optical filter is widely applicable to color-image input/output technologies, including the image sensing, display, and illumination fields.
关键词：色温度;黒体放射;液晶フィルタ;ゲストホスト液晶;2色性色素