发明名称 Eye inspection apparatus with variable field angle
摘要 An eye inspection apparatus in which an objective, an apertured mirror, a diaphragm, a fixed lens group, a compensation lens group, a variation lens group, a convergent lens group, a quick-return mirror and a photographic film are arranged in order stated with the first mentioned element nearest the eye to be inspected. In addition an observation light source, a photographic flash tube, a condenser lens, and a relay lens are directed to the aperture mirror, and further a view finder is arranged to be directed to the quick-return mirror.
申请公布号 US4502766(A) 申请公布日期 1985.03.05
申请号 US19840625184 申请日期 1984.06.27
申请人 CANON KABUSHIKI KAISHA 发明人 ITO, YUJI
分类号 A61B3/14;(IPC1-7):A61B3/14;G03B29/00 主分类号 A61B3/14
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