Osamu Yokoyama

Person

Suwa, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Light flux diameter expanding element and image display device
- Patent number 12,222,509
- Issue date Feb 11, 2025
- Seiko Epson Corporation
- Osamu Yokoyama
- G02 - OPTICS
Information Patent Grant
Display device having lens and light-transmitting layer, and electr...
- Patent number 12,144,200
- Issue date Nov 12, 2024
- Seiko Epson Corporation
- Osamu Yokoyama
Information Patent Grant
Optical device and image display apparatus
- Patent number 11,709,361
- Issue date Jul 25, 2023
- Seiko Epson Corporation
- Osamu Yokoyama
- G02 - OPTICS
Information Patent Grant
Virtual image display device and optical unit
- Patent number 11,635,625
- Issue date Apr 25, 2023
- Seiko Epson Corporation
- Osamu Yokoyama
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Light flux diameter expanding element and image display device
- Patent number 11,619,818
- Issue date Apr 4, 2023
- Seiko Epson Corporation
- Osamu Yokoyama
- G02 - OPTICS
Information Patent Grant
Image display device having maximum emission angle of image light s...
- Patent number 11,598,968
- Issue date Mar 7, 2023
- Seiko Epson Corporation
- Masatoshi Yonekubo
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Display device having pixel electrode and color filter, and electro...
- Patent number 11,552,274
- Issue date Jan 10, 2023
- Seiko Epson Corporation
- Osamu Yokoyama
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Image display device for providing uniform brightness in virtual image
- Patent number 11,513,357
- Issue date Nov 29, 2022
- Seiko Epson Corporation
- Osamu Yokoyama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Display device having lens and light-transmitting layer, and electr...
- Patent number 11,411,205
- Issue date Aug 9, 2022
- Seiko Epson Corporation
- Osamu Yokoyama
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Virtual image display device
- Patent number 11,067,804
- Issue date Jul 20, 2021
- Seiko Epson Corporation
- Osamu Yokoyama
- G02 - OPTICS
Information Patent Grant
Light flux diameter expanding element and image display device
- Patent number 10,989,925
- Issue date Apr 27, 2021
- Seiko Epson Corporation
- Osamu Yokoyama
- G02 - OPTICS
Information Patent Grant
Illuminating device and liquid crystal display apparatus
- Patent number 10,901,133
- Issue date Jan 26, 2021
- 138 East LCD Advancements Limited
- Osamu Yokoyama
- G02 - OPTICS
Information Patent Grant
Display apparatus
- Patent number 10,884,244
- Issue date Jan 5, 2021
- Seiko Epson Corporation
- Fumika Yamada
- G02 - OPTICS
Information Patent Grant
Image display device having maximum emission angle of first image l...
- Patent number 10,739,601
- Issue date Aug 11, 2020
- Seiko Epson Corporation
- Masatoshi Yonekubo
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Image display device
- Patent number 10,634,915
- Issue date Apr 28, 2020
- Seiko Epson Corporation
- Osamu Yokoyama
- G02 - OPTICS
Information Patent Grant
Display device with a narrow frame
- Patent number RE47817
- Issue date Jan 14, 2020
- EL TECHNOLOGY FUSION GODO KAISHA
- Hidekazu Kobayashi
Information Patent Grant
Image display device with optical systems to guide light to a pupil
- Patent number 10,495,883
- Issue date Dec 3, 2019
- Seiko Epson Corporation
- Osamu Yokoyama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Display apparatus
- Patent number 10,444,513
- Issue date Oct 15, 2019
- Seiko Epson Corporation
- Osamu Yokoyama
- G02 - OPTICS
Information Patent Grant
Image display apparatus
- Patent number 10,310,165
- Issue date Jun 4, 2019
- Seiko Epson Corporation
- Osamu Yokoyama
- G02 - OPTICS
Information Patent Grant
Light flux diameter expanding element and image display device
- Patent number 10,281,725
- Issue date May 7, 2019
- Seiko Epson Corporation
- Osamu Yokoyama
- G02 - OPTICS
Information Patent Grant
Optical element with spaced diffraction gratings, and display appar...
- Patent number 10,254,558
- Issue date Apr 9, 2019
- Seiko Epson Corporation
- Hayato Matsuki
- G02 - OPTICS
Information Patent Grant
Image display apparatus and optical element having light guide plat...
- Patent number 10,203,503
- Issue date Feb 12, 2019
- Seiko Epson Corporation
- Osamu Yokoyama
- G02 - OPTICS
Information Patent Grant
Image display device with optical systems to guide light to a pupil
- Patent number 10,139,630
- Issue date Nov 27, 2018
- Seiko Epson Corporation
- Osamu Yokoyama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Luminous flux diameter enlarging element and display apparatus
- Patent number 10,133,077
- Issue date Nov 20, 2018
- Seiko Epson Corporation
- Osamu Yokoyama
- G02 - OPTICS
Information Patent Grant
Optical element, display device, and manufacturing method for optic...
- Patent number 10,095,035
- Issue date Oct 9, 2018
- Seiko Epson Corporation
- Shohei Yoshida
- G02 - OPTICS
Information Patent Grant
Optical device and image display apparatus
- Patent number 10,025,009
- Issue date Jul 17, 2018
- Seiko Epson Corporation
- Fumika Yamada
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Optical element, electro-optical device, and mounted display apparatus
- Patent number 9,720,236
- Issue date Aug 1, 2017
- Seiko Epson Corporation
- Osamu Yokoyama
- G02 - OPTICS
Information Patent Grant
Light flux diameter enlarging element and display device
- Patent number 9,651,778
- Issue date May 16, 2017
- Seiko Epson Corporation
- Osamu Yokoyama
- G02 - OPTICS
Information Patent Grant
Optical device including diffraction elements for diffracting light...
- Patent number 9,568,730
- Issue date Feb 14, 2017
- Seiko Epson Corporation
- Fumika Yamada
- G02 - OPTICS
Information Patent Grant
Light flux diameter-expanding element and display apparatus
- Patent number 9,541,757
- Issue date Jan 10, 2017
- Seiko Epson Corporation
- Osamu Yokoyama
- G02 - OPTICS

Patents Applicationslast 30 patents

Information Patent Application
DISPLAY DEVICE AND ELECTRONIC APPARATUS
- Publication number 20250031517
- Publication date Jan 23, 2025
- SEIKO EPSON CORPORATION
- Osamu YOKOYAMA
Information Patent Application
LIGHT FLUX DIAMETER EXPANDING ELEMENT AND IMAGE DISPLAY DEVICE
- Publication number 20230194877
- Publication date Jun 22, 2023
- SEIKO EPSON CORPORATION
- Osamu YOKOYAMA
- G02 - OPTICS
Information Patent Application
VIRTUAL IMAGE DISPLAY APPARATUS
- Publication number 20230094824
- Publication date Mar 30, 2023
- SEIKO EPSON CORPORATION
- Osamu YOKOYAMA
- G02 - OPTICS
Information Patent Application
OPTICAL ELEMENT AND VIRTUAL IMAGE DISPLAY DEVICE
- Publication number 20230033943
- Publication date Feb 2, 2023
- SEIKO EPSON CORPORATION
- Osamu YOKOYAMA
- G02 - OPTICS
Information Patent Application
DISPLAY DEVICE AND ELECTRONIC APPARATUS
- Publication number 20220328795
- Publication date Oct 13, 2022
- SEIKO EPSON CORPORATION
- Osamu YOKOYAMA
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
VIRTUAL IMAGE DISPLAY DEVICE
- Publication number 20220035157
- Publication date Feb 3, 2022
- SEIKO EPSON CORPORATION
- Osamu YOKOYAMA
- G02 - OPTICS
Information Patent Application
VIRTUAL IMAGE DISPLAY DEVICE AND OPTICAL UNIT
- Publication number 20210302739
- Publication date Sep 30, 2021
- SEIKO EPSON CORPORATION
- Osamu YOKOYAMA
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Application
LIGHT FLUX DIAMETER EXPANDING ELEMENT AND IMAGE DISPLAY DEVICE
- Publication number 20210191131
- Publication date Jun 24, 2021
- SEIKO EPSON CORPORATION
- Osamu YOKOYAMA
- G02 - OPTICS
Information Patent Application
IMAGE DISPLAY DEVICE
- Publication number 20210033869
- Publication date Feb 4, 2021
- SEIKO EPSON CORPORATION
- Osamu Yokoyama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
OPTICAL DEVICE AND IMAGE DISPLAY APPARATUS
- Publication number 20210033870
- Publication date Feb 4, 2021
- SEIKO EPSON CORPORATION
- Osamu YOKOYAMA
- G02 - OPTICS
Information Patent Application
DISPLAY DEVICE AND ELECTRONIC APPARATUS
- Publication number 20200358036
- Publication date Nov 12, 2020
- SEIKO EPSON CORPORATION
- Osamu YOKOYAMA
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
DISPLAY DEVICE AND ELECTRONIC APPARATUS
- Publication number 20200358035
- Publication date Nov 12, 2020
- SEIKO EPSON CORPORATION
- Osamu YOKOYAMA
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
IMAGE DISPLAY DEVICE HAVING MAXIMUM EMISSION ANGLE OF FIRST IMAGE L...
- Publication number 20200333610
- Publication date Oct 22, 2020
- SEIKO EPSON CORPORATION
- Masatoshi YONEKUBO
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
VIRTUAL IMAGE DISPLAY DEVICE
- Publication number 20190265479
- Publication date Aug 29, 2019
- SEIKO EPSON CORPORATION
- Osamu YOKOYAMA
- G02 - OPTICS
Information Patent Application
LIGHT FLUX DIAMETER EXPANDING ELEMENT AND IMAGE DISPLAY DEVICE
- Publication number 20190219828
- Publication date Jul 18, 2019
- SEIKO EPSON CORPORATION
- Osamu YOKOYAMA
- G02 - OPTICS
Information Patent Application
IMAGE DISPLAY DEVICE WITH OPTICAL SYSTEMS TO GUIDE LIGHT TO A PUPIL
- Publication number 20190049735
- Publication date Feb 14, 2019
- SEIKO EPSON CORPORATION
- Osamu YOKOYAMA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
DISPLAY APPARATUS
- Publication number 20190041650
- Publication date Feb 7, 2019
- SEIKO EPSON CORPORATION
- Fumika Yamada
- G02 - OPTICS
Information Patent Application
DISPLAY APPARATUS
- Publication number 20180348523
- Publication date Dec 6, 2018
- SEIKO EPSON CORPORATION
- Osamu YOKOYAMA
- G02 - OPTICS
Information Patent Application
IMAGE DISPLAY APPARATUS
- Publication number 20180088271
- Publication date Mar 29, 2018
- SEIKO EPSON CORPORATION
- Osamu YOKOYAMA
- G02 - OPTICS
Information Patent Application
IMAGE DISPLAY DEVICE
- Publication number 20180067325
- Publication date Mar 8, 2018
- SEIKO EPSON CORPORATION
- Masatoshi YONEKUBO
- G02 - OPTICS
Information Patent Application
OPTICAL ELEMENT, DISPLAY DEVICE, AND MANUFACTURING METHOD FOR OPTIC...
- Publication number 20170276945
- Publication date Sep 28, 2017
- SEIKO EPSON CORPORATION
- Shohei YOSHIDA
- G02 - OPTICS
Information Patent Application
OPTICAL ELEMENT AND DISPLAY APPARATUS
- Publication number 20170276957
- Publication date Sep 28, 2017
- SEIKO EPSON CORPORATION
- Hayato MATSUKI
- G02 - OPTICS
Information Patent Application
IMAGE DISPLAY DEVICE
- Publication number 20170276946
- Publication date Sep 28, 2017
- SEIKO EPSON CORPORATION
- Osamu YOKOYAMA
- G02 - OPTICS
Information Patent Application
IMAGE DISPLAY APPARATUS AND OPTICAL ELEMENT
- Publication number 20170276947
- Publication date Sep 28, 2017
- SEIKO EPSON CORPORATION
- Osamu YOKOYAMA
- G02 - OPTICS
Information Patent Application
LIGHT FLUX DIAMETER EXPANDING ELEMENT AND IMAGE DISPLAY DEVICE
- Publication number 20170248789
- Publication date Aug 31, 2017
- SEIKO EPSON CORPORATION
- Osamu YOKOYAMA
- G02 - OPTICS
Information Patent Application
IMAGE DISPLAY DEVICE
- Publication number 20170227776
- Publication date Aug 10, 2017
- SEIKO EPSON CORPORATION
- Osamu YOKOYAMA
- G02 - OPTICS
Information Patent Application
LUMINOUS FLUX DIAMETER ENLARGING ELEMENT AND DISPLAY APPARATUS
- Publication number 20170131552
- Publication date May 11, 2017
- SEIKO EPSON CORPORATION
- Osamu YOKOYAMA
- G02 - OPTICS
Information Patent Application
IMAGE DISPLAY DEVICE
- Publication number 20170115484
- Publication date Apr 27, 2017
- SEIKO EPSON CORPORATION
- Osamu YOKOYAMA
- G02 - OPTICS
Information Patent Application
LIGHT FLUX DIAMETER ENLARGING ELEMENT AND DISPLAY DEVICE
- Publication number 20160282615
- Publication date Sep 29, 2016
- SEIKO EPSON CORPORATION
- Osamu Yokoyama
- G02 - OPTICS
Information Patent Application
LIGHT FLUX DIAMETER-EXPANDING ELEMENT AND DISPLAY APPARATUS
- Publication number 20160139407
- Publication date May 19, 2016
- SEIKO EPSON CORPORATION
- Osamu Yokoyama
- G02 - OPTICS

Osamu Yokoyama

Person

Patents Grantslast 30 patents

Light flux diameter expanding element and image display device

Display device having lens and light-transmitting layer, and electr...

Optical device and image display apparatus

Virtual image display device and optical unit

Light flux diameter expanding element and image display device

Image display device having maximum emission angle of image light s...

Display device having pixel electrode and color filter, and electro...

Image display device for providing uniform brightness in virtual image

Display device having lens and light-transmitting layer, and electr...

Virtual image display device

Light flux diameter expanding element and image display device

Illuminating device and liquid crystal display apparatus

Display apparatus

Image display device having maximum emission angle of first image l...

Image display device

Display device with a narrow frame

Image display device with optical systems to guide light to a pupil

Display apparatus

Image display apparatus

Light flux diameter expanding element and image display device

Optical element with spaced diffraction gratings, and display appar...

Image display apparatus and optical element having light guide plat...

Image display device with optical systems to guide light to a pupil

Luminous flux diameter enlarging element and display apparatus

Optical element, display device, and manufacturing method for optic...

Optical device and image display apparatus

Optical element, electro-optical device, and mounted display apparatus

Light flux diameter enlarging element and display device

Optical device including diffraction elements for diffracting light...

Light flux diameter-expanding element and display apparatus

Patents Applicationslast 30 patents

DISPLAY DEVICE AND ELECTRONIC APPARATUS

LIGHT FLUX DIAMETER EXPANDING ELEMENT AND IMAGE DISPLAY DEVICE

VIRTUAL IMAGE DISPLAY APPARATUS

OPTICAL ELEMENT AND VIRTUAL IMAGE DISPLAY DEVICE

DISPLAY DEVICE AND ELECTRONIC APPARATUS

VIRTUAL IMAGE DISPLAY DEVICE

VIRTUAL IMAGE DISPLAY DEVICE AND OPTICAL UNIT

LIGHT FLUX DIAMETER EXPANDING ELEMENT AND IMAGE DISPLAY DEVICE

IMAGE DISPLAY DEVICE

OPTICAL DEVICE AND IMAGE DISPLAY APPARATUS

DISPLAY DEVICE AND ELECTRONIC APPARATUS

DISPLAY DEVICE AND ELECTRONIC APPARATUS

IMAGE DISPLAY DEVICE HAVING MAXIMUM EMISSION ANGLE OF FIRST IMAGE L...

VIRTUAL IMAGE DISPLAY DEVICE

LIGHT FLUX DIAMETER EXPANDING ELEMENT AND IMAGE DISPLAY DEVICE

IMAGE DISPLAY DEVICE WITH OPTICAL SYSTEMS TO GUIDE LIGHT TO A PUPIL

DISPLAY APPARATUS

DISPLAY APPARATUS

IMAGE DISPLAY APPARATUS

IMAGE DISPLAY DEVICE

OPTICAL ELEMENT, DISPLAY DEVICE, AND MANUFACTURING METHOD FOR OPTIC...

OPTICAL ELEMENT AND DISPLAY APPARATUS

IMAGE DISPLAY DEVICE

IMAGE DISPLAY APPARATUS AND OPTICAL ELEMENT

LIGHT FLUX DIAMETER EXPANDING ELEMENT AND IMAGE DISPLAY DEVICE

IMAGE DISPLAY DEVICE

LUMINOUS FLUX DIAMETER ENLARGING ELEMENT AND DISPLAY APPARATUS

IMAGE DISPLAY DEVICE

LIGHT FLUX DIAMETER ENLARGING ELEMENT AND DISPLAY DEVICE

LIGHT FLUX DIAMETER-EXPANDING ELEMENT AND DISPLAY APPARATUS