发明授权
- 专利标题: Dental video camera with an adjustable iris
- 专利标题(中): 具有可调光圈的牙科摄像机
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申请号: US426119申请日: 1995-04-20
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公开(公告)号: US5737013A公开(公告)日: 1998-04-07
- 发明人: Ronald R. Williams , Steve Wright , Fred G. Kinley
- 申请人: Ronald R. Williams , Steve Wright , Fred G. Kinley
- 专利权人: Williams; Ronald R.,Wright; Steve,Kinley; Fred G.
- 当前专利权人: Williams; Ronald R.,Wright; Steve,Kinley; Fred G.
- 主分类号: A61B1/00
- IPC分类号: A61B1/00 ; A61B1/04 ; A61B1/12 ; A61B1/24 ; H04N5/225 ; H04N5/238
摘要:
A dental video camera includes a housing which has an elongated cavity with a distal end and a proximal end, an adjustably focusing lens and CCD camera system which is disposed within the elongated cavity of the housing, a fixed focusing lens system and an adjustable iris. The adjustably focusing lens and CCD camera system provides a focusing adjustment between a near field of focus and a far field of focus. The fixed focusing lens system is optically coupled to the adjustably focusing lens and CCD camera system and is disposed in the elongated cavity of the housing adjacent to the distal end thereof. The adjustable iris is optically and mechanically coupled to the adjustably focusing lens and CCD camera system. The adjustable iris is adjusted between a nearly closed opening and a wide open opening in response to the focusing adjustment between the near field of focus and the far field of focus.
公开/授权文献
- US5035403A Apparatus for cooling a cylindrical member in linear motion 公开/授权日:1991-07-30
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