Inventor
HIRAKAWA JUN
JP20 patents
⚠️ This page may combine multiple inventors who share the name “HIRAKAWA JUN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
ASAHI OPTICAL CO LTD
16 patentsUS6318912B1Nov 20, 2001
Adapter having a tilt and shift mechanism
ASAHI OPTICAL CO LTD35 citations92
US5724193AMar 3, 1998
Super wide angle zoom lens
ASAHI OPTICAL CO LTD45 citations92
US5572276ANov 5, 1996
Inner focus type telephoto zoom lens
ASAHI OPTICAL CO LTD46 citations92
US5546232AAug 13, 1996
Two-group zoom lens
ASAHI OPTICAL CO LTD32 citations92
US5264965ANov 23, 1993
Zoom lens
ASAHI OPTICAL CO LTD27 citations92
US5233474AAug 3, 1993
Wide-angle lens system
ASAHI OPTICAL CO LTD23 citations92
US5172274ADec 15, 1992
Large aperture, medium telephoto lens system
ASAHI OPTICAL CO LTD21 citations82
US5717532AFeb 10, 1998
Reflection-type compound optical elements
ASAHI OPTICAL CO LTD12 citations74
US5448412ASep 5, 1995
Telephoto zoom lens system
ASAHI OPTICAL CO LTD18 citations74
US4781449ANov 1, 1988
Wide angle reading lens system
ASAHI OPTICAL CO LTD12 citations74
US6002887ADec 14, 1999
View finder
ASAHI OPTICAL CO LTD12 citations73
US5822132AOct 13, 1998
Soft focus lens
ASAHI OPTICAL CO LTD8 citations73
US5061053AOct 29, 1991
Telephoto zoom lens system
ASAHI OPTICAL CO LTD17 citations73
US4934797AJun 19, 1990
Wide-angle lens system of a retrofocus type
ASAHI OPTICAL CO LTD10 citations73
US4904070AFeb 27, 1990
Telephoto lens system
ASAHI OPTICAL CO LTD5 citations62
US4836663AJun 6, 1989
Telephoto zoom lens system
ASAHI OPTICAL CO LTD6 citations62