Silver halide emulsions spectrally sensitized to infrared radiation with novel cyanine dyes
申请人:POLAROID CORPORATION
公开号:EP0545380A1
公开(公告)日:1993-06-09
This invention relates to photographic silver halide emulsions spectrally sensitized to infrared radiation above 800nm and to a class of pentamethine cyanine dyes of 5-fluorobenzothiazole derivatives useful as the infrared sensitizing dyes.