发明名称 |
Light-weight three-element clinical viewer |
摘要 |
The light-weight clinical viewer includes a two-element objective lens and a single-element eyepiece lens. Use of multiple lenses allows for a more compact package. The doublet objective serves to reduce vignetting while providing a wide field of view and reduced chromatic aberration. Image quality is further enhanced, while keeping the weight of the viewer down, through the use in the objective of light-weight high index glass. Moreover, the invention permits the use of a single mounting barrel assembly for different eyepieces to reduce manufacturing costs.
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申请公布号 |
US5627690(A) |
申请公布日期 |
1997.05.06 |
申请号 |
US19950479962 |
申请日期 |
1995.06.07 |
申请人 |
SURGICAL ACUITY, INC. |
发明人 |
CAPLAN, CHARLES H.;BUCHROEDER, RICHARD A. |
分类号 |
G02B7/00;G02B25/00;G02C7/08;(IPC1-7):G02B13/00;G02B23/00 |
主分类号 |
G02B7/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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