Inventor
HOSHIKA SHUJI
JP5 patents
Patents
5 patentsUS4518859AMay 21, 1985
Angle measuring device with line sensor
ASAHI OPTICAL CO LTD25 citations78
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
US4060725ANov 29, 1977
Focal plane detecting device
ASAHI OPTICAL CO LTD7 citations70
US4540253ASep 10, 1985
Method and device for measuring eye refraction errors
ASAHI OPTICAL CO LTD5 citations58