发明名称 Eye refractometer having variable wavelength illumination means
摘要 An eye refractometer has an illumination system for irradiating a fundus of an examined eye with measurement light, and a light receiving system for receiving a light beam from the fundus of the examined eye irradiated with the measurement light. The illumination system can change the measurement light between visible light and infrared light, and can emit the visible light in a flashing manner. Eye refraction information of the examined eye is detected on the basis of light reception through the light receiving system, and the difference between detection values of the eye refraction information before and after a change of the measurement light.
申请公布号 US5467151(A) 申请公布日期 1995.11.14
申请号 US19930037429 申请日期 1993.03.26
申请人 CANON KABUSHIKI KAISHA 发明人 KOHAYAKAWA, YOSHIMI
分类号 A61B3/10;A61B3/103;A61B3/15;(IPC1-7):A61B3/103 主分类号 A61B3/10
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