Assignee
NITTOH INC
JP39 patents
Top patents by PatentIndex Score
US9785043B2Oct 10, 2017
Projection optical system and projector apparatus
NITTOH INC7 citations82
US11378788B2Jul 5, 2022
Zoom lens system and imaging apparatus
NITTOH INC2 citations73
US10761415B2Sep 1, 2020
Projection optical system and projector apparatus
NITTOH INC2 citations71
US10754239B2Aug 25, 2020
Projection optical assembly and projector device
NITTOH INC2 citations71
US10645353B2May 5, 2020
Projection optical system and projector
NITTOH INC3 citations71
US10375363B2Aug 6, 2019
Projection optical system and projector
NITTOH INC1 citations71
US10310366B2Jun 4, 2019
Projection optical assembly and projector device
NITTOH INC2 citations71
US10063819B2Aug 28, 2018
Projection optical system and projector
NITTOH INC2 citations71
US10466439B2Nov 5, 2019
Mirror holding mechanism
NITTOH INC1 citations63
US10884326B2Jan 5, 2021
Projection optical system and projector
NITTOH INC1 citations62
US10503051B2Dec 10, 2019
Optical diaphragm device, lens barrel, and imaging device or projection device
NITTOH INC1 citations59
US12393001B2Aug 19, 2025
Lens for filming
NITTOH INC0 citations57
US10884317B2Jan 5, 2021
Optical diaphragm device, lens barrel and imaging device or projection device
NITTOH INC1 citations55
US11550115B2Jan 10, 2023
Lens barrel and camera device
NITTOH INC0 citations52
US11194136B2Dec 7, 2021
Optical system for image pickup and image pickup apparatus
NITTOH INC0 citations52
US12487436B2Dec 2, 2025
Image-forming optical system, projection device, and imaging device
NITTOH INC0 citations50
US12411323B2Sep 9, 2025
Optical system having intermediate image formed therein
NITTOH INC0 citations50
US11720007B2Aug 8, 2023
Projection optical system and projector apparatus
NITTOH INC0 citations50
US11314042B2Apr 26, 2022
Optical system for image pickup, and image pickup device
NITTOH INC0 citations50
US11815792B2Nov 14, 2023
Lens barrel
NITTOH INC0 citations49
US10663702B2May 26, 2020
Zoom lens system and imaging apparatus
NITTOH INC0 citations49
US10422981B2Sep 24, 2019
Lens system and imaging apparatus having adjacent stop and fixed lens system at an output side
NITTOH INC0 citations49
US9995903B2Jun 12, 2018
Lens device
NITTOH INC0 citations49
US12111486B2Oct 8, 2024
Optical filter and imaging lens unit
NITTOH INC0 citations48
US11536935B2Dec 27, 2022
Lens system and image pickup apparatus
NITTOH INC0 citations48
US10481362B2Nov 19, 2019
Circumferential angle adjustment device for generatrix of cylindrical lens, and lens barrel equipped with circumferential angle adjustment device for generatrix of cylindrical lens
NITTOH INC0 citations48
US10133022B2Nov 20, 2018
Optical device
NITTOH INC0 citations48
US12019356B2Jun 25, 2024
Lens barrel and interchangeable lens camera
NITTOH INC0 citations44
US11500134B2Nov 15, 2022
Optical diaphragm device, lens barrel and imaging device or projection device
NITTOH INC0 citations44
US12523842B2Jan 13, 2026
Lens barrel
NITTOH INC0 citations43
US11867889B2Jan 9, 2024
Lens system and imaging apparatus
NITTOH INC1 citations43
US10754120B2Aug 25, 2020
Projection lens barrel and projection display device
NITTOH INC0 citations43
US10222576B2Mar 5, 2019
Projection lens barrel and projection display device
NITTOH INC0 citations43
US10557975B2Feb 11, 2020
Reflecting mirror and mirror holding mechanism
NITTOH INC0 citations42
US10558008B2Feb 11, 2020
Lens unit
NITTOH INC0 citations38
US10139589B2Nov 27, 2018
Zoom lens unit and indicator member
NITTOH INC0 citations38
US11022776B2Jun 1, 2021
Lens barrel
NITTOH INC0 citations34
US10908379B2Feb 2, 2021
Imaging device
NITTOH INC0 citations34
US11467372B2Oct 11, 2022
Lens system and image pickup apparatus
NITTOH INC0 citations30