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1. 发明公开

EP2241910A3 ND filter and television camera, and manufacturing method of ND filter 审中-公开
标题翻译： 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
申请人： Nippon Hoso Kyokai , FUJIFILM Corporation
发明人： Mitsuhashi, Seiji , Yamazaki, Junichi , Odawara, Kuniharu , Saita, Arihiro , Isozaki, Makoto , Ozaki, Takao
IPC分类号： G02B5/20 , G02B26/02
CPC分类号： G02B5/205 , G02B26/023 , H04N5/2254
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.

2. 发明公开

EP2241910A2 ND filter and television camera, and manufacturing method of ND filter 审中-公开
标题翻译： 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
申请人： Nippon Hoso Kyokai , Fujinon Corporation
发明人： Mitsuhashi, Seiji , Yamazaki, Junichi , Odawara, Kuniharu , Saita, Arihiro , Isozaki, Makoto , Ozaki, Takao
IPC分类号： G02B5/20
CPC分类号： G02B5/205 , G02B26/023 , H04N5/2254
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。

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