Inventor
TAKANO YOHEI
JP47 patents
⚠️ This page may combine multiple inventors who share the name “TAKANO YOHEI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
TAKANO YOHEI
21 patentsUS9864177B2Jan 9, 2018
Projection optical system, projection apparatus, and projection system
TAKANO YOHEI6 citations84
US8179610B2May 15, 2012
Zoom lens and information device
TAKANO YOHEI8 citations84
US9261767B2Feb 16, 2016
Projection optical system and image display apparatus
TAKANO YOHEI5 citations83
US10067324B2Sep 4, 2018
Projection device and projection system
TAKANO YOHEI4 citations73
US9690084B2Jun 27, 2017
Projection device and projection system
TAKANO YOHEI2 citations73
US9523842B2Dec 20, 2016
Projection device and projection system
TAKANO YOHEI3 citations73
US8705180B2Apr 22, 2014
Zoom lens, imaging device and information device
TAKANO YOHEI4 citations73
US10890840B2Jan 12, 2021
Projection optical system unit, projection optical system, and projection optical apparatus
TAKANO YOHEI2 citations71
US12271104B2Apr 8, 2025
Light-source device, image projection apparatus, and display device
TAKANO YOHEI0 citations62
US11677914B2Jun 13, 2023
Light-source device and image forming apparatus including same
TAKANO YOHEI0 citations62
US11314157B2Apr 26, 2022
Light source optical system, light source device, and image projection apparatus
TAKANO YOHEI0 citations62
US10942434B2Mar 9, 2021
Light source optical system, light source device, and image projection apparatus
TAKANO YOHEI0 citations62
US11640106B2May 2, 2023
Light source optical system, light source device, and image projection apparatus
TAKANO YOHEI0 citations52
US11630288B2Apr 18, 2023
Image projection apparatus
TAKANO YOHEI0 citations52
US11537037B2Dec 27, 2022
Light source device, image projection apparatus, and light source optical system
TAKANO YOHEI0 citations52
US9244257B2Jan 26, 2016
Projection optical system and projector apparatus
TAKANO YOHEI1 citations52
US9013802B2Apr 21, 2015
Zoom lens, imaging device and information device
TAKANO YOHEI0 citations52
US8638503B2Jan 28, 2014
Zoom lens and information device incorporating the same
TAKANO YOHEI1 citations52
US8264781B2Sep 11, 2012
Zoom lens, information device, and imaging apparatus
TAKANO YOHEI0 citations52
US12130544B2Oct 29, 2024
Light-source optical system, light-source device, and image display apparatus
TAKANO YOHEI0 citations51
US8158020B2Apr 17, 2012
Liquid crystal element, optical path deflecting element, and image displaying apparatus
TAKANO YOHEI1 citations49
RICOH CO LTD
13 patentsUS7933074B2Apr 26, 2011
Zoom lens unit and information device
RICOH CO LTD12 citations84
US10241308B2Mar 26, 2019
Projection optical system including movable lens groups and image display apparatus
RICOH CO LTD1 citations72
US8054559B2Nov 8, 2011
Zoom lens, information device, and imaging apparatus
RICOH CO LTD5 citations63
US12114106B2Oct 8, 2024
Light-source device and image forming apparatus including same
RICOH CO LTD0 citations62
US12072617B2Aug 27, 2024
Light source optical system, light source device, light source unit, and image display apparatus
RICOH CO LTD0 citations62
US11762272B2Sep 19, 2023
Light-source device and image projection apparatus
RICOH CO LTD0 citations62
US11042082B2Jun 22, 2021
Projection optical system including movable lens groups, a non-movable lens group, and a curved mirror
RICOH CO LTD0 citations62
US10962750B2Mar 30, 2021
Projection optical system, projection apparatus, and projection system
RICOH CO LTD0 citations62
US7929071B2Apr 19, 2011
Electric field generating device comprising an electric field generating resistor and line electrodes, light deflecting device having the same, and image display apparatus having the same
RICOH CO LTD3 citations61
US10585269B2Mar 10, 2020
Projection optical system, projection apparatus, and projection system
RICOH CO LTD0 citations52
US10228546B2Mar 12, 2019
Projection optical system, projection apparatus, and projection system
RICOH CO LTD0 citations52
US9645371B2May 9, 2017
Projection optical system and projector apparatus
RICOH CO LTD0 citations52
US9766438B2Sep 19, 2017
Projection optical system and image display apparatus including a refraction optical system and first and second reflecing surfaces
RICOH CO LTD0 citations51
NAKAMURA KASUMI
4 patentsUS11506967B2Nov 22, 2022
Light-source device and image projection apparatus
NAKAMURA KASUMI0 citations60
US11874592B2Jan 16, 2024
Light source device and image projection apparatus
NAKAMURA KASUMI0 citations50
US11829058B2Nov 28, 2023
Light source device and image projection apparatus including a rod integrator and light guide
NAKAMURA KASUMI0 citations49
US10725369B2Jul 28, 2020
Light source device and image display apparatus
NAKAMURA KASUMI0 citations38
FUJITA KAZUHIRO
3 patentsUS11720010B2Aug 8, 2023
Light source device and projection device
FUJITA KAZUHIRO0 citations52
US12066752B2Aug 20, 2024
Light-source device, image projection apparatus, and light-source optical system
FUJITA KAZUHIRO0 citations51
US11953816B2Apr 9, 2024
Wavelength conversion plate, light source device, and image projection apparatus
FUJITA KAZUHIRO0 citations51