文章基本信息

标题：GaAsP-I.I.を用いたVTR一体型ハイビジョン超高感度カメラ
本地全文：下载
作者：山崎順一 ; 宮崎正之 ; 渭原常夫等
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：2004
卷号：58
期号：3
页码：362-368
DOI：10.3169/itej.58.362
出版社：The Institute of Image Information and Television Engineers
摘要：This ultrahigh-sensitivity HDTV color camcorder uses a proximity-type image intensifier employing 3rd-generation GaAsP photocathodes. In order to accomodate a video cassette recorder (VCR) within the camera, thereby reduce the weight and increase the image quality, a compact optical unit consisting of an enlarger lens and tapered fiber optics plate (FOP) was developed. The camcorder can be equipped with a high-speed gate shutter with speeds up to one per microsecond by pulsing the voltage to the photocathode. The camcorder provides good color reproducibility under moonlight, and a signal level of 100% was obtained at 0.2 lx, f/2 (signal-to-noise ratio of 56dB). Its sensitivity is about 400 times greater than that of current HDTV CCD camcorders, mak-ing it particularly well suited for shooting faint objects such as auroras and nocturnal animals.
关键词：GaAsP;ハイビジョン;カムコーダ;イメージインテンシファイヤ;高感度