Inventor
IWAKI MAKOTO
JP17 patents
⚠️ This page may combine multiple inventors who share the name “IWAKI MAKOTO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
ASAHI OPTICAL CO LTD
16 patentsUS6052232AApr 18, 2000
Molded plastic lens
ASAHI OPTICAL CO LTD32 citations92
US5657168AAug 12, 1997
Optical system of optical information recording/ reproducing apparatus
ASAHI OPTICAL CO LTD19 citations92
US5491587AFeb 13, 1996
Collimating lens for optical system using semiconductor laser
ASAHI OPTICAL CO LTD19 citations92
US5321550AJun 14, 1994
Optical system of optical information recording/reproducing apparatus
ASAHI OPTICAL CO LTD23 citations92
US5173809ADec 22, 1992
Objective lens system of optical information recording/reproducing apparatus
ASAHI OPTICAL CO LTD24 citations92
US6115175ASep 5, 2000
UV image forming optical system
ASAHI OPTICAL CO LTD23 citations91
US4956833ASep 11, 1990
Objective driving device for an optical disk apparatus
ASAHI OPTICAL CO LTD28 citations91
US6219191B1Apr 17, 2001
Plastic lens
ASAHI OPTICAL CO LTD19 citations90
US6144500ANov 7, 2000
Plastic lens
ASAHI OPTICAL CO LTD31 citations90
US5657171AAug 12, 1997
Optical system of optical information recording/reproducing apparatus
ASAHI OPTICAL CO LTD10 citations82
US5644437AJul 1, 1997
Optical system of optical information recording/reproducing apparatus
ASAHI OPTICAL CO LTD12 citations82
US5479296ADec 26, 1995
Optical system of optical information recording/reproducing apparatus
ASAHI OPTICAL CO LTD18 citations76
US5930032AJul 27, 1999
UV image forming optical system and lens for UV radiation
ASAHI OPTICAL CO LTD12 citations74
US5638221AJun 10, 1997
Optical system of optical information recording/reproducing apparatus
ASAHI OPTICAL CO LTD9 citations74
US5500767AMar 19, 1996
Objective lens and method of measuring its performance
ASAHI OPTICAL CO LTD16 citations72
US5335059AAug 2, 1994
Method and apparatus for measuring lens performance
ASAHI OPTICAL CO LTD9 citations66