Inventor
OKAHISA TSUYOSHI
JP55 patents
Patents
50 patentsUS12352426B2Jul 8, 2025
Light source device
NICHIA CORP2 citations75
US12044374B2Jul 23, 2024
Light source device and light guide array unit
NICHIA CORP2 citations73
US10883700B2Jan 5, 2021
Lens, light emitting device and method of manufacturing the lens and the light emitting device
NICHIA CORP4 citations73
US11563145B2Jan 24, 2023
Light source, light source device and method of manufacturing light source
NICHIA CORP2 citations71
US10825967B2Nov 3, 2020
Light emitting device, method of manufacturing covering member, and method of manufacturing light emitting device
NICHIA CORP2 citations71
US11575073B2Feb 7, 2023
Light-emitting device including cover and fixing member
NICHIA CORP3 citations68
US11231149B2Jan 25, 2022
Light-emitting device, illumination device, and methods for manufacturing same
NICHIA CORP2 citations68
US12442509B2Oct 14, 2025
Light-emitting module with cover member and light-transmissive member having higher hardness than cover member
NICHIA CORP0 citations62
US12416774B2Sep 16, 2025
Method of manufacturing lens and light emitting device
NICHIA CORP0 citations62
US12379564B2Aug 5, 2025
Method of manufacturing lens and light emitting device
NICHIA CORP0 citations62
US12366354B2Jul 22, 2025
Light source device
NICHIA CORP0 citations62
US12313242B2May 27, 2025
Light source device
NICHIA CORP0 citations62
US12271099B2Apr 8, 2025
Light-emitting device and method of manufacturing the same
NICHIA CORP0 citations62
US12241608B2Mar 4, 2025
Light source device and light guide array unit
NICHIA CORP0 citations62
US12218294B2Feb 4, 2025
Light source device
NICHIA CORP0 citations62
US12216383B2Feb 4, 2025
Light emitting module
NICHIA CORP0 citations62
US12152769B2Nov 26, 2024
Light source device
NICHIA CORP0 citations62
US12153277B2Nov 26, 2024
Lens and light emitting device
NICHIA CORP0 citations62
US12117691B2Oct 15, 2024
Method of producing light-emitting device and planar light source
NICHIA CORP0 citations62
US12117162B2Oct 15, 2024
Light emitting device
NICHIA CORP0 citations62
US11947245B2Apr 2, 2024
Light-emitting device and method of manufacturing the same
NICHIA CORP0 citations62
US11867390B2Jan 9, 2024
Light source device
NICHIA CORP0 citations62
US11846412B2Dec 19, 2023
Light source device
NICHIA CORP0 citations62
US11802678B2Oct 31, 2023
Light source device
NICHIA CORP0 citations62
US11788708B2Oct 17, 2023
Lens and light emitting device
NICHIA CORP0 citations62
US11649945B2May 16, 2023
Light source device
NICHIA CORP0 citations62
US11644635B2May 9, 2023
Lens, light emitting device and method of manufacturing the lens and the light emitting device
NICHIA CORP0 citations62
US11640038B2May 2, 2023
Lens, light emitting device and method of manufacturing the lens and the light emitting device
NICHIA CORP1 citations62
US11506934B2Nov 22, 2022
Light-emitting device and planar light source
NICHIA CORP1 citations62
US11500269B2Nov 15, 2022
Light-emitting device and method of manufacturing the same
NICHIA CORP0 citations62
US11469356B2Oct 11, 2022
Light source device
NICHIA CORP0 citations62
US11366261B2Jun 21, 2022
Light source device
NICHIA CORP1 citations62
US10983416B2Apr 20, 2021
Light-emitting device and method of manufacturing the same
NICHIA CORP0 citations62
US12066180B2Aug 20, 2024
Light source device and lens structure
NICHIA CORP1 citations61
US11894497B2Feb 6, 2024
Light emitting device, method of manufacturing covering member, and method of manufacturing light emitting device
NICHIA CORP0 citations61
US11639783B2May 2, 2023
Light source device and lens structure
NICHIA CORP1 citations61
US12247710B2Mar 11, 2025
Light source and light emitting module
NICHIA CORP0 citations60
US12243960B2Mar 4, 2025
Light source device including light emission units having light emission faces of different surface areas
NICHIA CORP0 citations60
US12113149B2Oct 8, 2024
Light source device including light source, liquid crystal shutter, and lens
NICHIA CORP0 citations60
US12038142B2Jul 16, 2024
Light source and light emitting module
NICHIA CORP0 citations60
US11815231B2Nov 14, 2023
Light source and light emitting module
NICHIA CORP0 citations60
US11810997B2Nov 7, 2023
Light source and light source device
NICHIA CORP1 citations60
US11810998B2Nov 7, 2023
Light source and light source device
NICHIA CORP0 citations60
US11929452B2Mar 12, 2024
Method of manufacturing light-emitting device and method of manufacturing illumination device
NICHIA CORP0 citations58
US12504151B2Dec 23, 2025
Light-emitting device and surface-emitting light source
NICHIA CORP0 citations52
US12352409B2Jul 8, 2025
Light source device
NICHIA CORP0 citations52
US12206052B2Jan 21, 2025
Light-emitting device and planar light source that utilizes multiple wavelength conversion layers
NICHIA CORP0 citations52
US11287622B2Mar 29, 2022
Light source module
NICHIA CORP0 citations52
US10770632B2Sep 8, 2020
Light source device
NICHIA CORP0 citations52
US10622529B2Apr 14, 2020
Light emitting device
NICHIA CORP0 citations52
Showing the top 50 of 55 patents by PatentIndex Score.