Makoto Hirakawa

Person

Tokyo, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Light-source device, image projection apparatus, and display device
- Patent number 12,271,104
- Issue date Apr 8, 2025
- Ricoh Company, Ltd.
- Yohei Takano
- G02 - OPTICS
Information Patent Grant
Light-source optical system, light-source device, and image display...
- Patent number 12,130,544
- Issue date Oct 29, 2024
- Ricoh Company, Ltd.
- Yohei Takano
- G02 - OPTICS
Information Patent Grant
Light source optical system, light source device, light source unit...
- Patent number 12,072,617
- Issue date Aug 27, 2024
- Ricoh Company, Ltd.
- Makoto Hirakawa
- G02 - OPTICS
Information Patent Grant
Light source device and image projection apparatus
- Patent number 11,874,592
- Issue date Jan 16, 2024
- Ricoh Company, Ltd.
- Kasumi Nakamura
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Light source device and image projection apparatus including a rod...
- Patent number 11,829,058
- Issue date Nov 28, 2023
- Ricoh Company, Ltd.
- Kasumi Nakamura
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Image display device, image projection device, and moving body
- Patent number 11,822,076
- Issue date Nov 21, 2023
- Ricoh Company, Ltd.
- Makoto Hirakawa
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Light guide optical device, light source device, and image projecti...
- Patent number 11,812,201
- Issue date Nov 7, 2023
- Ricoh Company, Ltd.
- Takashi Sasaki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Light-source device and image projection apparatus
- Patent number 11,762,272
- Issue date Sep 19, 2023
- Ricoh Company, Ltd.
- Kasumi Nakamura
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Light source device and projection device
- Patent number 11,720,010
- Issue date Aug 8, 2023
- Ricoh Company, Ltd.
- Kazuhiro Fujita
- G02 - OPTICS
Information Patent Grant
Light source optical system, light source device, light source unit...
- Patent number 11,669,004
- Issue date Jun 6, 2023
- Ricoh Company, Ltd.
- Makoto Hirakawa
- G02 - OPTICS
Information Patent Grant
Image projection apparatus
- Patent number 11,630,288
- Issue date Apr 18, 2023
- Ricoh Company, Ltd.
- Yohei Takano
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image display apparatus and mobile apparatus
- Patent number 11,567,314
- Issue date Jan 31, 2023
- Ricoh Company, Ltd.
- Makoto Hirakawa
- G02 - OPTICS
Information Patent Grant
Light source device, image projection apparatus, and light source o...
- Patent number 11,537,037
- Issue date Dec 27, 2022
- Ricoh Company, Ltd.
- Yohei Takano
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Light-source device and image projection apparatus
- Patent number 11,506,967
- Issue date Nov 22, 2022
- Ricoh Company, Ltd.
- Kasumi Nakamura
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Display apparatus and equipment
- Patent number 11,131,850
- Issue date Sep 28, 2021
- Ricoh Company, Ltd.
- Kento Nakamura
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Magnification optical system
- Patent number 10,606,042
- Issue date Mar 31, 2020
- Ricoh Company, Ltd.
- Hibiki Tatsuno
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Focus adjustment system for an image display device
- Patent number 10,451,961
- Issue date Oct 22, 2019
- Ricoh Company, Ltd.
- Hibiki Tatsuno
- G02 - OPTICS
Information Patent Grant
Magnification optical system
- Patent number 10,310,238
- Issue date Jun 4, 2019
- Ricoh Company, Ltd.
- Hibiki Tatsuno
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Light irradiation device, and image display equipped with the same,...
- Patent number 10,073,333
- Issue date Sep 11, 2018
- Ricoh Company, Ltd.
- Takehiro Nishimori
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Light source unit and image display apparatus
- Patent number 9,894,333
- Issue date Feb 13, 2018
- Ricoh Company, Ltd.
- Makoto Hirakawa
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Magnification optical system
- Patent number 9,841,584
- Issue date Dec 12, 2017
- Ricoh Company, Ltd.
- Hibiki Tatsuno
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Magnification optical system
- Patent number 9,784,952
- Issue date Oct 10, 2017
- Ricoh Company, Ltd.
- Hibiki Tatsuno
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Light beam scanning device and image forming apparatus
- Patent number 9,494,793
- Issue date Nov 15, 2016
- Ricoh Company, Ltd.
- Nobuyuki Arai
- G02 - OPTICS
Information Patent Grant
Magnification optical system
- Patent number 9,348,121
- Issue date May 24, 2016
- Ricoh Company, Ltd.
- Hibiki Tatsuno
- G02 - OPTICS
Information Patent Grant
Optical scanning device and image forming apparatus
- Patent number 9,221,272
- Issue date Dec 29, 2015
- Ricoh Company, Ltd.
- Makoto Hirakawa
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Optical scanning device and image forming apparatus
- Patent number 9,195,062
- Issue date Nov 24, 2015
- Ricoh Company, Limited
- Nobuyuki Arai
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Enlargement optical system
- Patent number 9,158,119
- Issue date Oct 13, 2015
- Ricoh Company, Ltd.
- Kiichiro Nishina
- G02 - OPTICS
Information Patent Grant
Image displaying apparatus
- Patent number 9,069,238
- Issue date Jun 30, 2015
- Ricoh Company, Ltd.
- Kiichiro Nishina
- G02 - OPTICS
Information Patent Grant
Magnification optical system
- Patent number 9,046,674
- Issue date Jun 2, 2015
- Ricoh Company, Ltd.
- Hibiki Tatsuno
- G02 - OPTICS
Information Patent Grant
Image displaying apparatus having plane mirror at conjugate to imag...
- Patent number 9,039,196
- Issue date May 26, 2015
- Ricoh Company, Ltd.
- Makoto Hirakawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
LIGHT-SOURCE DEVICE, IMAGE PROJECTION APPARATUS, AND DISPLAY DEVICE
- Publication number 20250231472
- Publication date Jul 17, 2025
- RICOH COMPANY, LTD.
- Yohei TAKANO
- G02 - OPTICS
Information Patent Application
IMAGE ACQUISITION APPARATUS, INSPECTION APPARATUS, AND IMAGE ACQUIS...
- Publication number 20250130188
- Publication date Apr 24, 2025
- Koji MASUDA
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
CAR BODY INSPECTION DEVICE AND CAR BODY INSPECTION METHOD
- Publication number 20240314420
- Publication date Sep 19, 2024
- Makoto HIRAKAWA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
THERMOGRAPHIC INSPECTION APPARATUS AND INSPECTION METHOD
- Publication number 20240248055
- Publication date Jul 25, 2024
- Koji MASUDA
- G01 - MEASURING TESTING
Information Patent Application
LIGHT SOURCE DEVICE AND DISPLAY APPARATUS
- Publication number 20230288791
- Publication date Sep 14, 2023
- Yohei TAKANO
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
LIGHT SOURCE OPTICAL SYSTEM, LIGHT SOURCE DEVICE, LIGHT SOURCE UNIT...
- Publication number 20230251559
- Publication date Aug 10, 2023
- RICOH COMPANY, LTD.
- Makoto HIRAKAWA
- G02 - OPTICS
Information Patent Application
LIGHT-SOURCE DEVICE, IMAGE PROJECTION APPARATUS, AND DISPLAY DEVICE
- Publication number 20230110183
- Publication date Apr 13, 2023
- Yohei TAKANO
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
LIGHT-SOURCE DEVICE AND IMAGE PROJECTION APPARATUS
- Publication number 20230043477
- Publication date Feb 9, 2023
- RICOH COMPANY, LTD.
- Kasumi NAKAMURA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
LIGHT-SOURCE OPTICAL SYSTEM, LIGHT-SOURCE DEVICE, AND IMAGE DISPLAY...
- Publication number 20220382137
- Publication date Dec 1, 2022
- Yohei TAKANO
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
LIGHT GUIDE OPTICAL DEVICE, LIGHT SOURCE DEVICE, AND IMAGE PROJECTI...
- Publication number 20220345671
- Publication date Oct 27, 2022
- Takashi SASAKI
- G02 - OPTICS
Information Patent Application
LIGHT SOURCE DEVICE AND IMAGE PROJECTION APPARATUS
- Publication number 20220299852
- Publication date Sep 22, 2022
- Kasumi NAKAMURA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
LIGHT SOURCE DEVICE AND PROJECTION DEVICE
- Publication number 20220179298
- Publication date Jun 9, 2022
- Kazuhiro FUJITA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
LIGHT SOURCE DEVICE, IMAGE PROJECTION APPARATUS, AND LIGHT SOURCE O...
- Publication number 20220171267
- Publication date Jun 2, 2022
- Ricoh Company, Ltd.
- Yohei TAKANO
- G02 - OPTICS
Information Patent Application
LIGHT SOURCE OPTICAL SYSTEM, LIGHT SOURCE DEVICE, LIGHT SOURCE UNIT...
- Publication number 20220171268
- Publication date Jun 2, 2022
- Makoto HIRAKAWA
- G02 - OPTICS
Information Patent Application
IMAGE PROJECTION APPARATUS
- Publication number 20220066177
- Publication date Mar 3, 2022
- Ricoh Company, Ltd.
- Yohei TAKANO
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
LIGHT-SOURCE DEVICE AND IMAGE PROJECTION APPARATUS
- Publication number 20210200075
- Publication date Jul 1, 2021
- Ricoh Company, Ltd.
- Kasumi NAKAMURA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
IMAGE DISPLAY DEVICE, IMAGE PROJECTION DEVICE, AND MOVING BODY
- Publication number 20210116707
- Publication date Apr 22, 2021
- Makoto HIRAKAWA
- B60 - VEHICLES IN GENERAL
Information Patent Application
LIGHT SOURCE DEVICE, IMAGE PROJECTION APPARATUS, LIGHT SOURCE OPTIC...
- Publication number 20200301266
- Publication date Sep 24, 2020
- Kasumi NAKAMURA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
FOCUS ADJUSTMENT SYSTEM FOR AN IMAGE DISPLAY DEVICE
- Publication number 20200004129
- Publication date Jan 2, 2020
- Hibiki TATSUNO
- G02 - OPTICS
Information Patent Application
DISPLAY APPARATUS AND EQUIPMENT
- Publication number 20190361232
- Publication date Nov 28, 2019
- Kento NAKAMURA
- G02 - OPTICS
Information Patent Application
MAGNIFICATION OPTICAL SYSTEM
- Publication number 20190258036
- Publication date Aug 22, 2019
- RICOH COMPANY, LTD.
- Hibiki TATSUNO
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
IMAGE DISPLAY APPARATUS AND MOBILE APPARATUS
- Publication number 20190219820
- Publication date Jul 18, 2019
- Makoto Hirakawa
- G02 - OPTICS
Information Patent Application
MAGNIFICATION OPTICAL SYSTEM
- Publication number 20180003928
- Publication date Jan 4, 2018
- Hibiki TATSUNO
- G02 - OPTICS
Information Patent Application
LIGHT IRRADIATION DEVICE AND IMAGE DISPLAY APPARATUS EQUIPPED WITH...
- Publication number 20160349606
- Publication date Dec 1, 2016
- RICOH COMPANY, LTD.
- Takehiro NISHIMORI
- G02 - OPTICS
Information Patent Application
LIGHT SOURCE UNIT AND IMAGE DISPLAY APPARATUS
- Publication number 20160344986
- Publication date Nov 24, 2016
- Makoto HIRAKAWA
- B60 - VEHICLES IN GENERAL
Information Patent Application
MAGNIFICATION OPTICAL SYSTEM
- Publication number 20160231542
- Publication date Aug 11, 2016
- Hibiki TATSUNO
- G02 - OPTICS
Information Patent Application
MAGNIFICATION OPTICAL SYSTEM
- Publication number 20150234158
- Publication date Aug 20, 2015
- Hibiki TATSUNO
- G02 - OPTICS
Information Patent Application
MAGNIFICATION OPTICAL SYSTEM
- Publication number 20150062696
- Publication date Mar 5, 2015
- Hibiki TATSUNO
- G02 - OPTICS
Information Patent Application
MAGNIFICATION OPTICAL SYSTEM
- Publication number 20140126045
- Publication date May 8, 2014
- Hibiki TATSUNO
- G02 - OPTICS
Information Patent Application
ENLARGEMENT OPTICAL SYSTEM
- Publication number 20140118818
- Publication date May 1, 2014
- Kiichiro NISHINA
- G02 - OPTICS

Makoto Hirakawa

Person

Patents Grantslast 30 patents

Light-source device, image projection apparatus, and display device

Light-source optical system, light-source device, and image display...

Light source optical system, light source device, light source unit...

Light source device and image projection apparatus

Light source device and image projection apparatus including a rod...

Image display device, image projection device, and moving body

Light guide optical device, light source device, and image projecti...

Light-source device and image projection apparatus

Light source device and projection device

Light source optical system, light source device, light source unit...

Image projection apparatus

Image display apparatus and mobile apparatus

Light source device, image projection apparatus, and light source o...

Light-source device and image projection apparatus

Display apparatus and equipment

Magnification optical system

Focus adjustment system for an image display device

Magnification optical system

Light irradiation device, and image display equipped with the same,...

Light source unit and image display apparatus

Magnification optical system

Magnification optical system

Light beam scanning device and image forming apparatus

Magnification optical system

Optical scanning device and image forming apparatus

Optical scanning device and image forming apparatus

Enlargement optical system

Image displaying apparatus

Magnification optical system

Image displaying apparatus having plane mirror at conjugate to imag...

Patents Applicationslast 30 patents

LIGHT-SOURCE DEVICE, IMAGE PROJECTION APPARATUS, AND DISPLAY DEVICE

IMAGE ACQUISITION APPARATUS, INSPECTION APPARATUS, AND IMAGE ACQUIS...

CAR BODY INSPECTION DEVICE AND CAR BODY INSPECTION METHOD

THERMOGRAPHIC INSPECTION APPARATUS AND INSPECTION METHOD

LIGHT SOURCE DEVICE AND DISPLAY APPARATUS

LIGHT SOURCE OPTICAL SYSTEM, LIGHT SOURCE DEVICE, LIGHT SOURCE UNIT...

LIGHT-SOURCE DEVICE, IMAGE PROJECTION APPARATUS, AND DISPLAY DEVICE

LIGHT-SOURCE DEVICE AND IMAGE PROJECTION APPARATUS

LIGHT-SOURCE OPTICAL SYSTEM, LIGHT-SOURCE DEVICE, AND IMAGE DISPLAY...

LIGHT GUIDE OPTICAL DEVICE, LIGHT SOURCE DEVICE, AND IMAGE PROJECTI...

LIGHT SOURCE DEVICE AND IMAGE PROJECTION APPARATUS

LIGHT SOURCE DEVICE AND PROJECTION DEVICE

LIGHT SOURCE DEVICE, IMAGE PROJECTION APPARATUS, AND LIGHT SOURCE O...

LIGHT SOURCE OPTICAL SYSTEM, LIGHT SOURCE DEVICE, LIGHT SOURCE UNIT...

IMAGE PROJECTION APPARATUS

LIGHT-SOURCE DEVICE AND IMAGE PROJECTION APPARATUS

IMAGE DISPLAY DEVICE, IMAGE PROJECTION DEVICE, AND MOVING BODY

LIGHT SOURCE DEVICE, IMAGE PROJECTION APPARATUS, LIGHT SOURCE OPTIC...

FOCUS ADJUSTMENT SYSTEM FOR AN IMAGE DISPLAY DEVICE

DISPLAY APPARATUS AND EQUIPMENT

MAGNIFICATION OPTICAL SYSTEM

IMAGE DISPLAY APPARATUS AND MOBILE APPARATUS

MAGNIFICATION OPTICAL SYSTEM

LIGHT IRRADIATION DEVICE AND IMAGE DISPLAY APPARATUS EQUIPPED WITH...

LIGHT SOURCE UNIT AND IMAGE DISPLAY APPARATUS

MAGNIFICATION OPTICAL SYSTEM

MAGNIFICATION OPTICAL SYSTEM

MAGNIFICATION OPTICAL SYSTEM

MAGNIFICATION OPTICAL SYSTEM

ENLARGEMENT OPTICAL SYSTEM