Inventor
HASUSHITA SACHIO
JP51 patents
⚠️ This page may combine multiple inventors who share the name “HASUSHITA SACHIO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
ASAHI OPTICAL CO LTD
47 patentsUS6184925B1Feb 6, 2001
Lens having color correction data
ASAHI OPTICAL CO LTD20 citations93
US5926657AJul 20, 1999
Camera having real-image finder and control method thereof
ASAHI OPTICAL CO LTD20 citations93
US5663838ASep 2, 1997
Zoom lens system
ASAHI OPTICAL CO LTD25 citations93
US5345285ASep 6, 1994
View finder and camera having same
ASAHI OPTICAL CO LTD36 citations93
US5278699AJan 11, 1994
Zoom lens system
ASAHI OPTICAL CO LTD20 citations93
US5838504ANov 17, 1998
Prism and real image type view finder
ASAHI OPTICAL CO LTD48 citations89
US6263168B1Jul 17, 2001
Eyepiece optical system for a single lens reflex camera
ASAHI OPTICAL CO LTD16 citations84
US6253033B1Jun 26, 2001
Eyepiece optical system for a single lens reflex camera
ASAHI OPTICAL CO LTD15 citations84
US5694244ADec 2, 1997
Real-image finder having variable power
ASAHI OPTICAL CO LTD18 citations84
US5424871AJun 13, 1995
Zoom lens system
ASAHI OPTICAL CO LTD14 citations82
US6169853B1Jan 2, 2001
Zooming optical system
ASAHI OPTICAL CO LTD13 citations74
US6137963AOct 24, 2000
View finder device
ASAHI OPTICAL CO LTD6 citations74
US6125238ASep 26, 2000
Real image type finder optical system
ASAHI OPTICAL CO LTD7 citations74
US6088545AJul 11, 2000
Real-image type viewfinder
ASAHI OPTICAL CO LTD7 citations74
US5969880AOct 19, 1999
Zoom lens system
ASAHI OPTICAL CO LTD11 citations74
US5838500ANov 17, 1998
High-powered zoom lens system
ASAHI OPTICAL CO LTD7 citations74
US5793535AAug 11, 1998
Zoom lens having high zoom ratio
ASAHI OPTICAL CO LTD15 citations74
US5752107AMay 12, 1998
Real image finder system for a camera
ASAHI OPTICAL CO LTD8 citations74
US5726799AMar 10, 1998
Real image type viewfinder
ASAHI OPTICAL CO LTD6 citations74
US5701205ADec 23, 1997
Shiftable lens system
ASAHI OPTICAL CO LTD9 citations74
US5692227ANov 25, 1997
Viewfinder
ASAHI OPTICAL CO LTD12 citations74
US5668674ASep 16, 1997
Reflecting prism and a finder system having a reflecting prism
ASAHI OPTICAL CO LTD12 citations74
US5642223AJun 24, 1997
Tilting lens system
ASAHI OPTICAL CO LTD15 citations74
US5625487AApr 29, 1997
Device for adjusting the diopter setting of a finder assembly
ASAHI OPTICAL CO LTD13 citations74
US5621568AApr 15, 1997
Device for adjusting the diopter setting of a finder assembly
ASAHI OPTICAL CO LTD11 citations74
US5550674AAug 27, 1996
Real time type viewfinder
ASAHI OPTICAL CO LTD9 citations74
US5537184AJul 16, 1996
Real image finder system for a camera
ASAHI OPTICAL CO LTD7 citations74
US5434636AJul 18, 1995
Real image type view finder
ASAHI OPTICAL CO LTD14 citations74
US5410430AApr 25, 1995
Variable power view finder
ASAHI OPTICAL CO LTD14 citations74
US5353162AOct 4, 1994
Zoom lens system
ASAHI OPTICAL CO LTD13 citations74
US5331464AJul 19, 1994
Zoom lens system
ASAHI OPTICAL CO LTD15 citations74
US5317451AMay 31, 1994
Albada finder
ASAHI OPTICAL CO LTD10 citations74
US5313327AMay 17, 1994
Ocular lens
ASAHI OPTICAL CO LTD9 citations74
US5309278AMay 3, 1994
Real-image variable magnification finder including a light shield between two moving lens groups
ASAHI OPTICAL CO LTD7 citations74
US6314247B1Nov 6, 2001
View finder device having compact structure
ASAHI OPTICAL CO LTD5 citations63
US6115182ASep 5, 2000
Real-time optical finder system
ASAHI OPTICAL CO LTD4 citations63
US6091545AJul 18, 2000
Real image finder optical system having half mirror and information display surface within eyepiece optical system
ASAHI OPTICAL CO LTD4 citations63
US6075645AJun 13, 2000
Real-image finder optical system
ASAHI OPTICAL CO LTD6 citations63
US6035140AMar 7, 2000
Finder system for camera
ASAHI OPTICAL CO LTD4 citations63
US5909597AJun 1, 1999
Viewfinder of a camera
ASAHI OPTICAL CO LTD5 citations63
US5907726AMay 25, 1999
Range finder system
ASAHI OPTICAL CO LTD5 citations63
US5793529AAug 11, 1998
Real image type viewfinder
ASAHI OPTICAL CO LTD3 citations63
US5541768AJul 30, 1996
Variable power view finder having aspheric lens surfaces
ASAHI OPTICAL CO LTD4 citations63
US5216546AJun 1, 1993
Attachment lens system for close-up photography
ASAHI OPTICAL CO LTD3 citations63
US5195814AMar 23, 1993
Strobe unit
ASAHI OPTICAL CO LTD6 citations63
US6141504AOct 31, 2000
Finder optical system
ASAHI OPTICAL CO LTD1 citations52
US6021002AFeb 1, 2000
Real-image finder
ASAHI OPTICAL CO LTD1 citations52
ASAHI KOGAKU KOGYO KAISHA
2 patentsASAHI KOGAKU KK
1 patentShowing the top 50 of 51 patents by PatentIndex Score.