Inventor
YAMASHITA NOBUO
29 patents
⚠️ This page may combine multiple inventors who share the name “YAMASHITA NOBUO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
OLYMPUS OPTICAL CO
23 patentsUS4140364AFeb 20, 1979
Variable field optical system for endoscopes
OLYMPUS OPTICAL CO317 citations98
US4684224AAug 4, 1987
Field view direction changing optical system
OLYMPUS OPTICAL CO61 citations96
US4398811AAug 16, 1983
Viewing-direction changing optical system
OLYMPUS OPTICAL CO140 citations96
US4036218AJul 19, 1977
Endoscope
OLYMPUS OPTICAL CO63 citations95
US4467361AAug 21, 1984
Image pick-up apparatus
OLYMPUS OPTICAL CO84 citations94
US4610513ASep 9, 1986
Illumination optical system for an endoscope
OLYMPUS OPTICAL CO27 citations93
US4415240ANov 15, 1983
Illumination optical system for an endoscope
OLYMPUS OPTICAL CO43 citations93
US4037938AJul 26, 1977
Retrofocus-type objective for endoscopes
OLYMPUS OPTICAL CO49 citations93
US4867136ASep 19, 1989
Endoscope apparatus
OLYMPUS OPTICAL CO31 citations92
US4340811AJul 20, 1982
Focusing method and apparatus for use in an optical system
OLYMPUS OPTICAL CO34 citations92
US4195904AApr 1, 1980
Optical system of viewing-direction changing attachment for endoscopes
OLYMPUS OPTICAL CO42 citations92
US4312572AJan 26, 1982
Focusing objective lens system for endoscopes
OLYMPUS OPTICAL CO53 citations91
US4285578AAug 25, 1981
Photo eyepiece for endoscopes
OLYMPUS OPTICAL CO42 citations91
US4824205AApr 25, 1989
Apparatus for improving image formed by imaging optical system
OLYMPUS OPTICAL CO21 citations82
US4580552AApr 8, 1986
Illuminating optical system for endoscopes
OLYMPUS OPTICAL CO21 citations82
US4269485AMay 26, 1981
Method for focusing an objective lens of endoscope
OLYMPUS OPTICAL CO21 citations81
US4111529ASep 5, 1978
Optical system for an endoscope
OLYMPUS OPTICAL CO18 citations74
US4029397AJun 14, 1977
Retrofocus-type wide-angle photographic lens system
OLYMPUS OPTICAL CO12 citations74
US4350149ASep 21, 1982
Endoscope and illumination optical system therefor
OLYMPUS OPTICAL CO9 citations72
US4294511AOct 13, 1981
Connecting optical system for light guides
OLYMPUS OPTICAL CO18 citations72
US3992086ANov 16, 1976
Compact retrofocus-type wide-angle photographic lens system
OLYMPUS OPTICAL CO3 citations63
US3976366AAug 24, 1976
Retrofocus-type ultra-wide angle photographic lens system
OLYMPUS OPTICAL CO2 citations63
US3972594AAug 3, 1976
Retrofocus-type wide-angle photographic lens system
OLYMPUS OPTICAL CO2 citations52