发明授权
- 专利标题： Optical system for endoscopes
- 专利标题（中）： 内镜光学系统
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申请号： US406383申请日： 1989-09-11
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公开(公告)号： US5050974A公开(公告)日： 1991-09-24
- 发明人: Yoshiharu Takasugi , Hiroyuki Fukuda
- 申请人： Yoshiharu Takasugi , Hiroyuki Fukuda
- 申请人地址： JPX Tokyo
- 专利权人： Olympus Optical Co., Ltd.
- 当前专利权人： Olympus Optical Co., Ltd.
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX63-226531 19880912
- 主分类号： G02B23/26
- IPC分类号： G02B23/26 ; A61B1/04 ; B29D11/00 ; G02B9/60 ; G02B9/62 ; G02B17/00 ; G02B21/02
摘要：
An optical system for endoscopes so adapted as to be usable with video endoscopes, comprising an imaging lens system equipped with an aperture stop and a field lens component arranged on the image side thereof, and so designed as to prevent the color shading from being produced by selecting an adequate focal length for the field lens component.