发明名称 |
Combination lens system for retinal photocoagulator laser system. |
摘要 |
<p>A retinal photocoagulator has means (12) for generating a beam of laser radiation and means (18,20,24) for delivering the laser beam to the surface of the retina. The delivery means includes a lens system (20) for varying the spot size of the beam at the surface of the retina which is operable in two alternate modes over a given range of spot sizes, wherein one of the modes varies the size of the spot while maintaining the beam in a focused condition at the retina, and wherein the other mode varies the size of the spot at the retina by altering the focal point. <IMAGE></p> |
申请公布号 |
EP0492778(A1) |
申请公布日期 |
1992.07.01 |
申请号 |
EP19910309382 |
申请日期 |
1991.10.11 |
申请人 |
COHERENT, INC. |
发明人 |
DEWEY, DAVID A.;MANOUKAIN, NUBAR |
分类号 |
A61B18/20;A61F9/007;A61F9/008 |
主分类号 |
A61B18/20 |
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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