发明名称 |
Ophthalmic apparatus for measuring the refractive power of a lens |
摘要 |
An ophthalmic apparatus has a diopter adjustment which adjusts the diopter of a target presented to an eye under test based on measurement of the refractive index of a lens put on the eye under test so that the diopter of the target matches the diopter of the eye under test.
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申请公布号 |
US5270749(A) |
申请公布日期 |
1993.12.14 |
申请号 |
US19910798947 |
申请日期 |
1991.11.27 |
申请人 |
CANON KABUSHIKI KAISHA |
发明人 |
OKUMURA, TOSHIAKI |
分类号 |
G03B13/18;A61B3/10;A61B3/103;(IPC1-7):A61B3/10 |
主分类号 |
G03B13/18 |
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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