Optical element, light source module and lighting device
US10794570B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 19, 2018 |
| Grant date | Oct 6, 2020 |
| Priority date | — |
| Expiry date | May 7, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B5/003
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Examples of the present disclosure disclose an optical element, a light source module using the optical element and a lighting device using the light source module. The optical element includes: a light distribution portion configured to receive irradiated light emitted from a light-emitting unit and allow the irradiated light to be emitted upon distribution, where the light emitted from the light distribution portion upon distribution has an irradiation range; and a light-shielding portion provided integrally with the light distribution portion, where the light-shielding portion is engaged with the light distribution portion to form a light-shielding receiving chamber, and the light-shielding receiving chamber is located outside the irradiation range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.