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1. 发明授权

US07477314B2 Exposure control method and apparatus for an image pickup apparatus 失效
标题翻译：用于图像拾取装置的曝光控制方法和装置
公开(公告)号：US07477314B2
公开(公告)日：2009-01-13
申请号：US10740759
申请日：2003-12-22
申请人： Yusuke Nanjo , Yuichi Nakano , Akira Kumano , Masatoshi Yamagiwa
发明人： Yusuke Nanjo , Yuichi Nakano , Akira Kumano , Masatoshi Yamagiwa
IPC分类号： H04N5/238 , H04N5/225 , G03B7/00 , G02B5/22
CPC分类号： H04N5/2254 , H04N5/238
摘要： The invention concerns with an exposure control mechanism for use in an image pickup apparatus in which a diaphragm aperture formed by a plurality of diaphragm blades moving straightforward in opposite directions is covered by an ND filter, and intends to prevent deterioration of image quality caused by diffraction even in an image pickup device having a small picture size and a short pixel pitch. The image pickup apparatus comprises an exposure control mechanism for adjusting the quantity of light flux entering a shooting lens system. The exposure control mechanism comprises a diaphragm made up of diaphragm blades movable on a plane perpendicular to an optical axis in opposite directions to define a diaphragm aperture, and an ND filter made up of at least two ND filter elements having different transmittances. When the diaphragm blades are displaced from an aperture open state in a direction to restrict the quantity of transmitting light, an aperture area is restricted by the diaphragm blades from the open state to a predetermined aperture area, and thereafter the ND filter is advanced into the diaphragm aperture successively from one of the ND filter elements having the highest transmittance while the predetermined aperture area is maintained.
摘要翻译：本发明涉及一种用于图像拾取装置中的曝光控制机构，其中由相反方向直接移动的多个光阑叶片形成的光阑孔被ND滤光片覆盖，并且旨在防止由衍射引起的图像质量的劣化即使在具有小图像尺寸和短像素间距的图像拾取装置中。图像拾取装置包括用于调节进入拍摄镜头系统的光束量的曝光控制机构。曝光控制机构包括由光阑叶片构成的光阑，该光阑叶片可在相反方向上垂直于光轴的平面上移动，以限定光阑孔径，以及由具有不同透射率的至少两个ND滤光片组成的ND滤光片。当光阑叶片从限制发光量的方向上的孔径打开状态移位时，光阑叶片从打开状态限制到预定的开口面积，然后将ND滤光器前进到在保持预定孔径区域的情况下，从具有最高透射率的ND滤色器元件之一连续地进行光阑孔径。

2. 发明授权

US06771315B1 Image pickup apparatus 失效
标题翻译：摄像设备
公开(公告)号：US06771315B1
公开(公告)日：2004-08-03
申请号：US09357892
申请日：1999-07-21
申请人： Yusuke Nanjo , Yuichi Nakano , Akira Kumano , Masatoshi Yamagiwa
发明人： Yusuke Nanjo , Yuichi Nakano , Akira Kumano , Masatoshi Yamagiwa
IPC分类号： H04N5235
CPC分类号： H04N5/2254 , H04N5/238
摘要： The invention concerns with an exposure control mechanism for use in an image pickup apparatus in which a diaphragm aperture formed by a plurality of diaphragm blades moving straightforward in opposite directions is covered by an ND filter, and intends to prevent deterioration of image quality caused by diffraction even in an image pickup device having a small picture size and a short pixel pitch. The image pickup apparatus comprises an exposure control mechanism for adjusting the quantity of light flux entering a shooting lens system. The exposure control mechanism comprises a diaphragm made up of diaphragm blades movable on a plane perpendicular to an optical axis in opposite directions to define a diaphragm aperture, and an ND filter made up of at least two ND filter elements having different transmittances. When the diaphragm blades are displaced from an aperture open state in a direction to restrict the quantity of transmitting light, an aperture area is restricted by the diaphragm blades from the open state to a predetermined aperture area, and thereafter the ND filter is advanced into the diaphragm aperture successively from one of the ND filter elements having the highest transmittance while the predetermined aperture area is maintained.
摘要翻译：本发明涉及一种用于图像拾取装置中的曝光控制机构，其中由相反方向直接移动的多个光阑叶片形成的光阑孔被ND滤光片覆盖，并且旨在防止由衍射引起的图像质量的劣化即使在具有小图像尺寸和短像素间距的图像拾取装置中。图像拾取装置包括用于调节进入拍摄镜头系统的光束量的曝光控制机构。曝光控制机构包括由光阑叶片构成的光阑，该光阑叶片可在相反方向上垂直于光轴的平面上移动，以限定光阑孔径，以及由具有不同透射率的至少两个ND滤光片组成的ND滤光片。当光阑叶片从限制发光量的方向上的孔径打开状态移位时，光阑叶片从打开状态限制到预定的开口面积，然后将ND滤光器前进到在保持预定孔径区域的情况下，从具有最高透射率的ND滤色器元件之一连续地进行光阑孔径。

3. 发明授权

US5420632A Video camera apparatus having an optical zoom means and an electronic zoom means 失效
标题翻译：具有光学变焦装置和电子变焦装置的摄像机装置
公开(公告)号：US5420632A
公开(公告)日：1995-05-30
申请号：US183330
申请日：1994-01-19
申请人： Masatoshi Yamagiwa
发明人： Masatoshi Yamagiwa
IPC分类号： G02B7/08 , G03B5/00 , H04N5/228 , H04N5/232 , H04N5/262
CPC分类号： H04N5/23296 , H04N5/232 , H04N5/2628
摘要： A video camera apparatus has an optical zoom and an electronic zoom which are both smoothly operated in a ganged relation while a zoom speed is maintained. The optical zoom means and electronic zoom means are respectively controlled by microcomputers. In that case, zoom information, such as a zoom magnification, is supplied to the two microcomputers via a serial communication, or a zoom magnification of the optical zoom means is constantly supplied to the microcomputer. When the optical zoom means reaches a wide angle lens end or telephoto lens end, a zoom speed thereof is not stopped rapidly but the zoom speed thereof is progressively decreased just before the optical zoom means reaches the wide angle lens end or telephoto lens end under the control of the microcomputer. When a zooming operation is started, the electronic zoom means do not immediately reach target zoom speeds but progressively increase their zoom speeds to reach the target zoom speeds.
摘要翻译：摄像机装置具有光学变焦和电子变焦，它们在保持变焦速度的同时能够以联动关系平滑地操作。光学变焦装置和电子变焦装置分别由微型计算机控制。在这种情况下，通过串行通信将诸如变焦倍率的变焦信息提供给两个微型计算机，或者将光学变焦装置的变焦倍率始终提供给微型计算机。当光学变焦装置到达广角镜头端或远摄镜头端时，其变焦速度不会快速停止，但是在光学变焦装置到达广角镜头端或远摄镜头端之前，其变焦速度逐渐减小控制微机。当缩放操作开始时，电子变焦装置不会立即达到目标变焦速度，而是逐渐增大其变焦速度以达到目标变焦速度。

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