Inventor
YASUI TOSHIFUMI
JP19 patents
⚠️ This page may combine multiple inventors who share the name “YASUI TOSHIFUMI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SONY CORP
8 patentsUS7924684B2Apr 12, 2011
Object lens, optical pickup, and optical disc device
SONY CORP6 citations73
US10659669B2May 19, 2020
Projection display unit
SONY CORP4 citations71
US9176367B2Nov 3, 2015
Illumination device and display unit including a light source section, first and second uniformization optical members, an optical device, and a drive section
SONY CORP3 citations62
US11181724B2Nov 23, 2021
Projection optical system and projector
SONY CORP0 citations61
US10908740B2Feb 2, 2021
Irradiation optical system and projector
SONY CORP0 citations61
US10459575B2Oct 29, 2019
Irradiation optical system and projector
SONY CORP1 citations61
US11835696B2Dec 5, 2023
Optical system and projector
SONY CORP0 citations50
US9523908B2Dec 20, 2016
Image projection apparatus and image projection method
SONY CORP0 citations41
YASUI TOSHIFUMI
7 patentsUS9335558B2May 10, 2016
Illumination device and display device
YASUI TOSHIFUMI2 citations61
US8116188B2Feb 14, 2012
Objective lens, optical pickup and optical disk apparatus
YASUI TOSHIFUMI4 citations60
US8064315B2Nov 22, 2011
Condensing optical device, optical pickup, and optical disc apparatus
YASUI TOSHIFUMI4 citations60
US8233370B2Jul 31, 2012
Objective lens, optical pickup and optical disc apparatus
YASUI TOSHIFUMI1 citations50
US9239463B2Jan 19, 2016
Illumination device and display unit for suppressing luminance unevenness and interference pattern
YASUI TOSHIFUMI0 citations39
US8864317B2Oct 21, 2014
Projection display
YASUI TOSHIFUMI0 citations39
US8139463B2Mar 20, 2012
Objective lens, optical pickup, and optical disc apparatus
YASUI TOSHIFUMI0 citations39