光束の収束および拡散による正立広角眼底観察レンズ
- 专利权人:
- 深水;真
- 发明人:
- 深水 真
- 申请号：
- JP2009277983
- 公开号：
- JP5266558B2
- 申请日:
- 2009.11.16
- 申请国别(地区):
- JP
- 年份:
- 2013
- 代理人:
- 摘要：
PROBLEM TO BE SOLVED: To provide a lens which permits wide-angle observation of an upright image in ocular fundus observation of an ophthalmological area.
SOLUTION: Fixing a plurality of high refractive index lenses 1, 2 and 3 by a cylindrical outer cylinder 4, converging observation light in the interior once, and diffusing the light again, permit the upright image of a wide area of the ocular fundus to be obtained.
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- 来源网站：
- 中国工程科技知识中心
