基本信息:
- 专利标题： Illumination control system for a film scanner
- 专利标题（中）：照明控制系统的底片扫描仪。
- 申请号：EP94107922.0 申请日：1994-05-24
- 公开(公告)号：EP0632650A3 公开(公告)日：1995-06-28
- 发明人： Sandor, Richard J., c/o Eastman Kodak Company , Sitter, Steven, c/o Eastman Kodak Company , Summers, Drew D., c/o Eastman Kodak Company , Kurtz, Andrew F., c/o Eastman Kodak Company , Divito, Charles P., c/o Eastman Kodak Company
- 申请人： EASTMAN KODAK COMPANY
- 申请人地址： 343 State Street Rochester, New York 14650-2201 US
- 专利权人： EASTMAN KODAK COMPANY
- 当前专利权人： EASTMAN KODAK COMPANY
- 当前专利权人地址： 343 State Street Rochester, New York 14650-2201 US
- 代理机构： Schmidt, Peter, Dipl.-Ing.
- 优先权： US73832 19930608
- 主分类号： H04N5/253
- IPC分类号： H04N5/253
摘要：
The light control system for the illumination system of a film telecine scanner comprises an aperture defining mechanism (35,36) and a position servo regulator that maintains the aperture at a desired aperture opening despite disturbances tending to change the aperture between aperture changes and an intensity servo regulator that takes into account the lamp intensity in resetting the aperture to a new position in response to a commanded light intensity related to a scene change, whereby aperture changes may be effected within the time of scanning a single film frame. The intensity servo regulator takes into account non-linear intensity gain of the aperture defining mechanism and its velocity of movement to establish a new aperture. The position servo regulator develops a position error signal by comparison of the instantaneous position to the previously set position and restores the previously set position. The aperture defining mechanism comprises first and second movable blades placed at a location in the optical path.
公开/授权文献:
- EP0632650B1 Illumination control system for a film scanner 公开/授权日：1999-02-03