发明申请
- 专利标题: Ophthalmic photographic apparatus
- 专利标题(中): 眼科摄影器材
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申请号: US10739968申请日: 2003-12-18
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公开(公告)号: US20050018135A1公开(公告)日: 2005-01-27
- 发明人: Naoki Maeda , Kazunori Matsumura , Shigeru Takimoto
- 申请人: Naoki Maeda , Kazunori Matsumura , Shigeru Takimoto
- 优先权: JPJP2002-378859 20021227
- 主分类号: A61B3/14
- IPC分类号: A61B3/14 ; A61B3/15
摘要:
An ophthalmic photographic apparatus comprises a photographic mask for defining a fundus photography range, a photographic stop for eliminating light reflected from an anterior portion of the eye, and a focusing lens for bringing the fundus into focus. Interlocking means are provided to move the photographic mask and the photographic stop in an interlocked manner relative to the movement of the focusing lens in such a way that with respect to a photographic optical system the photographic mask may be kept at a position substantially conjugate with an imaging plane of a CCD and the photographic stop may be kept at a position substantially conjugate with an anterior portion of the eye. The CCD is located at the image-side focal plane of the image-formation lens, the mask is located on the object-side focal plane of the focusing lens, and the photographic stop is located on the image-side focal plane of the focusing lens. These three components are moved as one unit when the system is adjusted to focus on the fundus.
公开/授权文献
- US07325924B2 Ophthalmic photographic apparatus 公开/授权日:2008-02-05
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