发明授权
- 专利标题： Optical system and optical apparatus including optical system
- 专利标题（中）： 光学系统和光学仪器包括光学系统
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申请号： US12511920申请日： 2009-07-29
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公开(公告)号： US07864456B2公开(公告)日： 2011-01-04
- 发明人: Tomohiko Ishibashi
- 申请人： Tomohiko Ishibashi
- 申请人地址： JP Tokyo
- 专利权人： Canon Kabushiki Kaisha
- 当前专利权人： Canon Kabushiki Kaisha
- 当前专利权人地址： JP Tokyo
- 代理机构： Canon USA Inc IP Div
- 优先权： JP2006-326868 20061204; JP2007-035936 20070216; JP2007-137748 20070524
- 主分类号： G02B15/14
- IPC分类号： G02B15/14 ; G02B9/04
摘要：
An optical system includes a first optical element and a second optical element on at least one of an enlargement side and a reduction side relative to a point P at which a light axis and a paraxial chief ray intersect. Each of the first optical element and second optical element is composed of a solid material having a refractive light incident surface and a refractive light emergent surface. The optical system satisfies the following conditional expressions: ΔθgF1>0.0272, ΔθgF2
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