Inventor

OGAWA HISAHITO

JP34 patents

Patents

34 patents

US5742433AApr 21, 1998

Diffractive optical device including grating elements with different grating periods and duty ratios

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD142 citations99

US6433303B1Aug 13, 2002

Spatial light modulator with a photoconductor having uneven conductivity in a lateral direction and a method for fabricating the same

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD89 citations96

US5561558AOct 1, 1996

Diffractive optical device

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD73 citations96

US5402435AMar 28, 1995

Optical device

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD79 citations96

US5138495AAug 11, 1992

Diffractive optical lens

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD54 citations96

US4602192AJul 22, 1986

Thin film integrated device

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD85 citations96

US4395440AJul 26, 1983

Method of and apparatus for manufacturing ultrafine particle film

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD74 citations96

US4313338AFeb 2, 1982

Gas sensing device

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD62 citations96

US5436742AJul 25, 1995

Method for driving a ferroelectric spatial light modulator including a first voltage, write pulse, and second voltage greater than and longer than the first

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD34 citations93

US5373519ADec 13, 1994

Semiconductor laser device, an optical device and a method of producing the same

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD31 citations93

US6388649B1May 14, 2002

Spatial light modulator and a method for driving the same

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD43 citations92

US5731797AMar 24, 1998

Driving method for spatial light modulator and projection display system

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD27 citations92

US5583676ADec 10, 1996

Spatial light modulator, method of production thereof and projection-type display

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD42 citations92

US5567941AOct 22, 1996

Pyroelectric type infrared sensor

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD21 citations92

US5511134AApr 23, 1996

Image recognition device and image recognition method

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD30 citations92

US5481621AJan 2, 1996

Device and method for recognizing an image based on a feature indicating a relative positional relationship between patterns

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD22 citations92

US5384649AJan 24, 1995

Liquid crystal spatial light modulator with electrically isolated reflecting films connected to electrically isolated pixel portions of photo conductor

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD36 citations92

US5331182AJul 19, 1994

Organic light emitting device and preparation and use thereof

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD41 citations92

US5793932AAug 11, 1998

Image recognition device and an image recognition method

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD16 citations82

US5486442AJan 23, 1996

Organic polymer and preparation and use in crystal spatial light modulator

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD15 citations82

US5453860ASep 26, 1995

Spatial light modulator having a photoconductor with grooves and a quantum efficiency greater than unity

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD16 citations82

US4362765ADec 7, 1982

Method of manufacturing a gas sensing device

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD15 citations82

US5416621AMay 16, 1995

Driving method for ferroelectric liquid crystal spatial light modulator

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD9 citations74

US5021660AJun 4, 1991

Pyroelectric infrared detector and driving method therefor

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD10 citations74

US5781267AJul 14, 1998

Anti-ferroelectric liquid crystal with black display in one frame, white in other and ratio giving grey scale

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD4 citations63

US5515189AMay 7, 1996

Neural network device and image recognition method employing photoconductive liquid crystal device with patterned electrode

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD6 citations62

US5443864AAug 22, 1995

Spatial light modulator and a neural network circuit

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD3 citations62

US5364668ANov 15, 1994

Spatial light modulator and a neural network circuit

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD3 citations62

OGAWA HISAHITO

Patents

Diffractive optical device including grating elements with different grating periods and duty ratios

Method and apparatus using laser pulses to make an array of microcavity holes

Spatial light modulator and neural network

Three-dimensional picture image display apparatus

Photosensitive material and process for the preparation thereof

Organic polymer and preparation and use thereof

Organic polymer and preparation and use thereof

Spatial light modulator with a photoconductor having uneven conductivity in a lateral direction and a method for fabricating the same

Diffractive optical device

Optical device

Diffractive optical lens

Thin film integrated device

Method of and apparatus for manufacturing ultrafine particle film

Gas sensing device

Method for driving a ferroelectric spatial light modulator including a first voltage, write pulse, and second voltage greater than and longer than the first

Semiconductor laser device, an optical device and a method of producing the same

Spatial light modulator and a method for driving the same

Driving method for spatial light modulator and projection display system

Spatial light modulator, method of production thereof and projection-type display

Pyroelectric type infrared sensor

Image recognition device and image recognition method

Device and method for recognizing an image based on a feature indicating a relative positional relationship between patterns

Liquid crystal spatial light modulator with electrically isolated reflecting films connected to electrically isolated pixel portions of photo conductor

Organic light emitting device and preparation and use thereof

Image recognition device and an image recognition method

Organic polymer and preparation and use in crystal spatial light modulator

Spatial light modulator having a photoconductor with grooves and a quantum efficiency greater than unity

Method of manufacturing a gas sensing device

Driving method for ferroelectric liquid crystal spatial light modulator

Pyroelectric infrared detector and driving method therefor

Anti-ferroelectric liquid crystal with black display in one frame, white in other and ratio giving grey scale

Neural network device and image recognition method employing photoconductive liquid crystal device with patterned electrode

Spatial light modulator and a neural network circuit

Spatial light modulator and a neural network circuit