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1. 发明授权

US5596190A Light collection device for a film image digitizer 失效
标题翻译：用于胶片图像数字转换器的光采集装置
公开(公告)号：US5596190A
公开(公告)日：1997-01-21
申请号：US459328
申请日：1995-06-02
申请人： Yun Z. Li , Richard R. Lemberger , Paul C. Schubert , Terrence H. Joyce , Jack K. Warren
发明人： Yun Z. Li , Richard R. Lemberger , Paul C. Schubert , Terrence H. Joyce , Jack K. Warren
IPC分类号： H04N1/04 , H04N1/028 , H01J3/14
CPC分类号： H04N1/0283 , H04N1/028 , H04N1/02815
摘要： A light collection device for use in a film image digitizing apparatus comprises a housing having an elongated aperture extending along a light beam scan line. The aperture receives light transmitted through a sheet of film from a light source. A diffusing member, disposed within the aperture and extending along the scan line, optically diffuses the light received by the aperture. The housing may include one or more reflective interior surfaces. A linear array of photodiodes, disposed within the housing and extending along the scan line, detects the light diffused by the diffusing member. Each of the photodiodes generates an analog signal representing an intensity of the detected light for each of a plurality of pixels. A summing circuit, coupled to each of the photodiodes, sums the analog signals generated by the photodiodes for each of the pixels to produce an output analog signal representing an overall intensity of the light transmitted through the sheet of film for each of the pixels.
摘要翻译：一种用于胶片图像数字化装置的光收集装置包括具有沿光束扫描线延伸的细长孔的外壳。孔径从光源接收透过薄膜的光。设置在孔内并沿着扫描线延伸的漫射构件光学扩散由孔接收的光。壳体可以包括一个或多个反射内表面。设置在壳体内并沿着扫描线延伸的线状阵列的光电二极管检测由扩散构件扩散的光。每个光电二极管产生表示多个像素中的每一个的检测光的强度的模拟信号。耦合到每个光电二极管的求和电路对于每个像素的光电二极管产生的模拟信号求和，以产生表示针对每个像素的透过薄膜的光的总体强度的输出模拟信号。

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