ND filter and television camera, and manufacturing method of ND filter
    16.
    发明公开
    ND filter and television camera, and manufacturing method of ND filter 审中-公开
    ND滤光器和电视摄像机及制造该ND滤光片的方法

    公开(公告)号:EP2241910A3

    公开(公告)日:2013-08-14

    申请号:EP10159817.5

    申请日:2010-04-13

    IPC分类号: G02B5/20 G02B26/02

    摘要: The present invention provides an ND filter and a television camera which can obtain a video with favorable quality which does not give sense of discomfort to viewers, and a manufacturing method of the ND filter. In an ND filter (10) of the present invention, a first region (34) with a light transmittance of about 100% and a second region (36) with a light transmittance continuously changing stepwise are continuously formed in a circumferential direction of a transparent glass board (32) formed in a disk shape. Therefore, image light transmits through all regions of the transparent glass board (32). Thereby, at the time of operation of light amount regulation, a region through which the image light does not transmit does not traverse a passage area (50) of the image light, and therefore, a screen does not become dark momentarily at the time of operation of light amount regulation. Therefore, by using the ND filter (10), a video with favorable quality without giving sense of discomfort to viewers can be obtained.

    ND filter and television camera, and manufacturing method of ND filter
    17.
    发明公开
    ND filter and television camera, and manufacturing method of ND filter 审中-公开
    ND-Filter und Fernsehkamera sowie Herstellungsverfahrenfürden ND-Filter

    公开(公告)号:EP2241910A2

    公开(公告)日:2010-10-20

    申请号:EP10159817.5

    申请日:2010-04-13

    IPC分类号: G02B5/20

    摘要: The present invention provides an ND filter and a television camera which can obtain a video with favorable quality which does not give sense of discomfort to viewers, and a manufacturing method of the ND filter. In an ND filter (10) of the present invention, a first region (34) with a light transmittance of about 100% and a second region (36) with a light transmittance continuously changing stepwise are continuously formed in a circumferential direction of a transparent glass board (32) formed in a disk shape. Therefore, image light transmits through all regions of the transparent glass board (32). Thereby, at the time of operation of light amount regulation, a region through which the image light does not transmit does not traverse a passage area (50) of the image light, and therefore, a screen does not become dark momentarily at the time of operation of light amount regulation. Therefore, by using the ND filter (10), a video with favorable quality without giving sense of discomfort to viewers can be obtained.

    摘要翻译: 本发明提供一种能够获得对观众不感到不适感的质量好的视频的ND滤波器和电视摄像机以及ND滤波器的制造方法。 在本发明的ND滤色器(10)中,透光率为100%的第一区域(34)和透光率连续变化的第二区域(36)在透明的周边方向上连续地形成 玻璃板(32)形成为盘状。 因此,图像光透过透明玻璃板(32)的所有区域。 因此,在光量调节的操作时,图像光不透射的区域不会穿过图像光的通过区域(50),因此在屏幕不会瞬间变暗 光量调节操作。 因此,通过使用ND滤波器(10),可以获得具有良好质量的视频,而不会给观看者带来不适感。