P

Inventor

MATSUOKA KAZUHIKO

JP51 patents
⚠️ This page may combine multiple inventors who share the name “MATSUOKA KAZUHIKO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

CANON KK

33 patents
US4872743AOct 10, 1989

Varifocal optical element

CANON KK92 citations96
US4729641AMar 8, 1988

Functional optical element having a non-flat planar interface with variable-index medium

CANON KK55 citations96
US5420848AMay 30, 1995

Optical system for optical information recording/reproducing apparatus having a galvano mirror

CANON KK29 citations93
US5267226ANov 30, 1993

Optical information recording and reproducing apparatus with switchable spot-functions

CANON KK48 citations93
US4842396AJun 27, 1989

Light modulation element and light modulation apparatus

CANON KK40 citations93
US4585296AApr 29, 1986

Scanning optical system having a tilting correcting function

CANON KK28 citations93
US4447112AMay 8, 1984

Scanning optical system having a tilting correcting function

CANON KK31 citations93
US4379612AApr 12, 1983

Scanning optical system having a fall-down correcting function

CANON KK33 citations93
US6462866B1Oct 8, 2002

Imaging optical system and original reading apparatus

CANON KK42 citations92
US5010534AApr 23, 1991

Optical information recording-reproducing apparatus

CANON KK25 citations92
US4848879AJul 18, 1989

Light modulating device

CANON KK39 citations92
US4787075ANov 22, 1988

Optical information recording medium and apparatus for recording/reproducing information using the same

CANON KK32 citations92
US4523801AJun 18, 1985

Scanning optical system subjected to a moisture proof treatment

CANON KK21 citations81
US6525764B2Feb 25, 2003

Image read method for performing image signal processes complying with the color of a reference portion of a recording medium, and image read apparatus adopting the method

CANON KK10 citations74
US6289134B1Sep 11, 2001

Image read method and apparatus for optimizing shading conditions

CANON KK12 citations74
US5517480AMay 14, 1996

Magneto-optical information reproducing apparatus that splits a light beam into at least three light beams advancing in the same direction

CANON KK16 citations74
US5289313AFeb 22, 1994

Optical head using semiconductor laser array as light source

CANON KK18 citations74
US5247505ASep 21, 1993

Information recording method for reciprocally recording and verifying information

CANON KK9 citations74
US5119356AJun 2, 1992

Information recording and reproducing apparatus including detection of whether an information recording medium has been normally loaded into the apparatus

CANON KK8 citations74
US5018123AMay 21, 1991

Optical information recording medium and method for recording information on said medium and reproducing information therefrom

CANON KK9 citations74
US4979807ADec 25, 1990

Biaspherical single lens for an optical information recording-reproducing apparatus

CANON KK12 citations74
US4973836ANov 27, 1990

Optical pickup device including a beam splitter having an inclined plane

CANON KK17 citations74
US4932763AJun 12, 1990

Aspherical single lens system for use with optical cards

CANON KK14 citations74
US4922351AMay 1, 1990

Optical information recording and reproducing apparatus

CANON KK11 citations74
US4912697AMar 27, 1990

Apparatus and method for preventing recording errors due to a reduction in the relative speed between an information carrying light beam and a recording medium

CANON KK9 citations74
US4751394AJun 14, 1988

Apparatus for recording and/or reproducing information using a card-like recording medium

CANON KK18 citations74
US4517589AMay 14, 1985

Colored image reading apparatus

CANON KK7 citations74
US4443055AApr 17, 1984

Scanning optical system having a tilting correcting function

CANON KK15 citations74
US4641920AFeb 10, 1987

Optical element having the function of changing the cross-sectional intensity distribution of a light beam

CANON KK8 citations70
US6288734B1Sep 11, 2001

Scanning optical device and image forming apparatus using the same

CANON KK2 citations63
US4865426ASep 12, 1989

Variable aberration imaging optical system

CANON KK6 citations63
US6118555ASep 12, 2000

Image reading apparatus having a light source including a fluorescent lamp

CANON KK2 citations62
US5490129AFeb 6, 1996

Optical head and optical information reading apparatus

CANON KK2 citations61

HITACHI LTD

9 patents

ROLAND CORP

4 patents

RENESAS TECH CORP

2 patents

SYSMEX CORP

2 patents

Showing the top 50 of 51 patents by PatentIndex Score.