发明名称 Image pickup system having a lens assembly and means for providing information relating to the spectral characteristic of the lens assembly
摘要 In an image pickup system such as a video camera having an adjusting circuit for adjusting a white balance in a color image signal, each interchangeable lens has a device for providing information on the spectral characteristic inherent in the lens. In one embodiment, a microcomputer is provided for processing the information on the spectral characteristic inherent in the lens. When the lens is mounted on the camera body incorporating the adjusting circuit, the information on the spectral characteristic of the lens is transmitted into the camera body by a mechanical arm whose length is representative of the spectral characteristic of the lens, thereby enabling the adjusting means to make a proper adjustment of the white balance for each lens having a different predetermined spectral characteristic.
申请公布号 US4851897(A) 申请公布日期 1989.07.25
申请号 US19880284855 申请日期 1988.12.13
申请人 CANON KABUSHIKI KAISHA 发明人 INUMA, MUTSUMI;SUZUKI, MASAO
分类号 G03B17/14;H04N5/232;H04N9/73 主分类号 G03B17/14
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