发明授权
- 专利标题: Objective optical system and endoscope
- 专利标题(中): 物镜光学系统和内窥镜
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申请号: US12476544申请日: 2009-06-02
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公开(公告)号: US07843655B2公开(公告)日: 2010-11-30
- 发明人: Ryo Machida
- 申请人: Ryo Machida
- 申请人地址: JP Tokyo
- 专利权人: Olympus Medical Systems Corp.
- 当前专利权人: Olympus Medical Systems Corp.
- 当前专利权人地址: JP Tokyo
- 代理机构: Arnold International
- 代理商 Bruce Y. Arnold
- 优先权: JP2008-148910 20080606
- 主分类号: G02B9/06
- IPC分类号: G02B9/06 ; A61B1/04
摘要:
An objective optical system includes, a first group having positive refractive power, a second group having positive refractive power, the first group having a first parallel flat plate, a diaphragm, a second parallel flat plate and a first plano-convex lens with its convex surface facing the image side in the above mentioned order as viewed from the object side, the first parallel flat plate, the second flat parallel plate and the first plano-convex lens forming a cemented lens, the second parallel flat plate being formed by an infrared absorption filter, the second group having a second plano-convex lens with its convex surface facing the object side.
公开/授权文献
- US20090303618A1 OBJECTIVE OPTICAL SYSTEM AND ENDOSCOPE 公开/授权日:2009-12-10