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    • 31. 发明授权
    • Image pickup apparatus
    • 摄像设备
    • US07505680B2
    • 2009-03-17
    • US11452274
    • 2006-06-14
    • Toshio Niwa
    • Toshio Niwa
    • G03B15/03
    • H04N5/217H04N5/2256H04N5/23296
    • An image pickup apparatus includes an imaging optical system, an image sensor, an image signal processing section and a light-amount characteristic giving section. The imaging optical system has a distortion in such a way as to form an image whose center part is stretched, and whose peripheral part is squeezed. The image sensor has a light reception surface at which a subject image is formed through the imaging optical system, and converts the formed subject image into image signals. The image signal processing section performs an image processing for correcting the image signals with respect to the distortion. The light-amount characteristic giving section gives the subject image a characteristic in which the amount of light at a center part of the subject image formed at the light-reception surface of the image sensor is larger than that at a peripheral part of the subject image.
    • 图像拾取装置包括成像光学系统,图像传感器,图像信号处理部分和光量特性给出部分。 成像光学系统具有形成其中心部分被拉伸并且其周边部分被挤压的图像的变形。 图像传感器具有通过成像光学系统形成被摄体图像的光接收表面,并将形成的被摄体图像转换为图像信号。 图像信号处理部分执行用于校正相对于失真的图像信号的图像处理。 光量特性赋予部使被摄体图像的特征在于,在图像传感器的受光面上形成的被摄体图像的中心部分的光量大于被摄体图像的周边部分的光量 。