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    • 3. 发明公开
    • Solid state image pick-up apparatus
    • 固体摄像装置
    • EP0384701A2
    • 1990-08-29
    • EP90301797.8
    • 1990-02-20
    • NIPPON HOSO KYOKAIIKEGAMI TSUSHINKI CO., LTD.
    • Nishida, Yasuaki, c/o Nippon Hoso Kyokai TechnicalFujita, Yoshihiro c/o Nippon Hoso Kyokai TechnicalIino, Yoshiki, c/o Nippon Hoso Kyokai TechnicalKawada, Norikiho, c/o Ikegami Tsushinki Co., Ltd.
    • H04N5/335H04N9/04
    • H04N5/335
    • An apparatus for picking-up an optical image of object including a lens system for forming the optical image of object, an optical filter for suppressing moire fringes, a color separation system for separating the optical image into green, red and blue color images, and three solid state image sensors for receiving the green, red and blue color images, respectively. The optical filter having a first quartz plate for separating ordinary and extraordinary light rays from each other in a direction of +45° with respect to the horizontal direction, a second quartz plate for separating ordinary and extraordinary light rays from each other in the horizontal scanning direction, and a third quartz plate for separating ordinary and extraordinary light rays from each other in a direction of -45° with respect to the horizontal scanning direction. The optical filter has two trap points, one at a sampling frequency f s and the other near 1.5f s , but does not have a trap point within a frequency range below f s , so that components near f s as well as at 2f s , 3f s , 4f s and 5f s can be suppressed to a large extent, while the suppression for components in the base band can be limited effectively.
    • 一种用于拾取物体的光学图像的设备,该设备包括用于形成物体的光学图像的透镜系统,用于抑制莫尔条纹的光学滤波器,用于将光学图像分离成绿色,红色和蓝色图像的颜色分离系统,以及 三个固态图像传感器分别用于接收绿色,红色和蓝色图像。 该滤光器具有第一石英板和第二石英板,该第一石英板用于将相对于水平方向+ 45°的方向上的普通和非常光线相互分离,第二石英板用于在水平扫描中将普通和非常光线彼此分开 以及第三石英板,用于将相对于水平扫描方向在-45°方向上的普通和异常光线彼此分开。 滤光片有两个陷波点,一个在取样频率fs,另一个在1.5fs附近,但在fs以下的频率范围内没有陷波点,因此fs附近的分量以及2fs,3fs,4fs和 可以在很大程度上抑制5fs,同时可以有效限制对基带中的组件的抑制。