Lens, light source unit, backlight apparatus, and display apparatus
US11460731B2 · kind B2 · utility
0Cited by
26References
37Claims
0Family size
Assignee
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Key dates
| Filing date | Jul 18, 2017 |
| Grant date | Oct 4, 2022 |
| Priority date | — |
| Expiry date | Jul 18, 2037 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21V5/043
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A lens diffusing light emitted from a light source includes a concave light-incident surface, a light guide portion, and a light-emitting surface. The light-incident surface includes a plane portion opposed to the light source and an optical function portion that is formed on the plane portion and one of scatters and diffuses the light. The light emitted from the light source enters the light-incident surface. The light that has entered the light-incident surface passes through the light guide portion. The light-emitting surface emits the light passed through the light guide portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.