发明名称 Apparatus for reading images from photographic film
摘要 An apparatus for reading images of a photographic film disposed on an image reading optical path, with a light source (31a) for emitting visible light and infrared light into the image reading optical path to irradiate the photographic film, and a zoom lens unit (32a) for the visible light and infrared light irradiating the photographic film. A visible light sensor and an infrared light sensor are disposed separately for detecting a visible image based on the visible light from the zoom lens unit, and for detecting an infrared image based on the infrared light from the zoom lens unit, respectively. A focal position varying transparent element (FT) is provided for shifting a focal position of the zoom lens unit along an optical axis. The transparent element is movable to and from a position between the zoom lens unit and infrared light sensor to correct variations in the focal position occurring with variations in magnification of the zoom lens unit.
申请公布号 US6812467(B2) 申请公布日期 2004.11.02
申请号 US20020303658 申请日期 2002.11.25
申请人 NORITSU KOKI CO., LTD. 发明人 NAKAMURA SHIGETAKA;ARIKAWA KOJI;TSUJI HIDEKAZU;KOBAYASHI KAZUHIRO
分类号 H04N1/48;H04N1/58;(IPC1-7):G01J5/02 主分类号 H04N1/48
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