Inventor
SHIOKAWA KOJI
JP14 patents
Patents
14 patentsUS10539766B2Jan 21, 2020
Projection optical system and projection image display device
SEIKO EPSON CORP8 citations83
US11435565B2Sep 6, 2022
Projection system and projection-type image display apparatus
SEIKO EPSON CORP2 citations72
US10782510B2Sep 22, 2020
Projection system and projector with light-shielding mask
SEIKO EPSON CORP4 citations71
US10574935B2Feb 25, 2020
Projection optical system and projection type image display device
SEIKO EPSON CORP2 citations71
US10473902B2Nov 12, 2019
Projection system and projection-type image display apparatus
SEIKO EPSON CORP6 citations71
US9740086B2Aug 22, 2017
Wide field angle projection system and projection-type image display apparatus
SEIKO EPSON CORP2 citations71
US12007678B2Jun 11, 2024
Projection system and projector with first optical system and second optical system
SEIKO EPSON CORP2 citations69
US10895719B2Jan 19, 2021
Projection system and projector
SEIKO EPSON CORP0 citations62
US12235465B2Feb 25, 2025
Projection system and projector
SEIKO EPSON CORP0 citations51
US9348124B2May 24, 2016
Projection system and projection-type image display apparatus
SEIKO EPSON CORP0 citations50
US12298596B2May 13, 2025
Optical system and projector
SEIKO EPSON CORP0 citations47
US10754231B2Aug 25, 2020
Projector
SEIKO EPSON CORP0 citations41
US10503057B2Dec 10, 2019
Projection lens and projector
SEIKO EPSON CORP0 citations39
US10571786B2Feb 25, 2020
Projection system and projection-type image display apparatus
SEIKO EPSON CORP0 citations30