Inventor
OKAMOTO IKUZO
JP5 patents
Patents
5 patentsUS4173398ANov 6, 1979
Optical system for objective eye-examination
ASAHI OPTICAL CO LTD34 citations91
US4486080ADec 4, 1984
Device for detecting blinking of an eye under examination
ASAHI OPTICAL CO LTD13 citations71
US4432617AFeb 21, 1984
Eye refractive error measuring device
ASAHI OPTICAL CO LTD9 citations71
US4410267AOct 18, 1983
Hand-held lens meter
ASAHI OPTICAL CO LTD13 citations71
US4540253ASep 10, 1985
Method and device for measuring eye refraction errors
ASAHI OPTICAL CO LTD5 citations58