Planar illumination device
US12411381B2 · kind B2 · utility
0Cited by
4References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 16, 2022 |
| Grant date | Sep 9, 2025 |
| Priority date | — |
| Expiry date | Mar 16, 2042 |
Classification
- Technology area (CPC —)General
Abstract
The planar illumination device includes a substrate including a plurality of light sources provided at one surface side, and a reflector disposed at the one surface side of the substrate and including a plurality of segments corresponding to the plurality of light sources, respectively, each of the segments being formed with a reflection surface surrounding each of the light sources. In an outer peripheral part segment disposed at an outer peripheral part of the reflector out of the plurality of segments, the reflection surface at an outer side and the reflection surface at an inner side are asymmetric.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.