Light distribution element, light source module and lighting device
US10928034B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 26, 2019 |
| Grant date | Feb 23, 2021 |
| Priority date | — |
| Expiry date | Nov 26, 2039 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21Y2115/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present disclosure provides a light distribution element and a light source module. The light distribution element includes: a light incident surface which is in the shape of a smooth inward concave curved surface and forms an accommodation cavity for accommodating a light emitting unit; and a light emitting surface which is in the shape of a smooth outward convex curved surface and is provided opposite to the light incident surface. There is a difference between the thickness of the light incident surface and the thickness of the light emitting surface, thus in the light spot formed by the light emitted from the light emitting surface where the thickness is relatively large, the color tolerance between a yellow spot and white light is less than a preset color difference.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.