Lens, lens group and lamp
US11162659B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 7, 2020 |
| Grant date | Nov 2, 2021 |
| Priority date | — |
| Expiry date | Aug 7, 2040 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21Y2115/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A lens includes a light source installation location, a second lens surface and a first lens surface, the light source installation location has a main optical axis passing through the second lens surface and the first lens surface, and on a plane perpendicular to the main optical axis, there are a first dimming axis and a second dimming axis that are perpendicular to each other and intersecting the main optical axis, the first lens surface includes a first light-focusing curved surface locating along the direction of the first dimming axis and on one side of the main optical axis, and at least part of the first lens surface on the other side of the main optical axis is diffusion curved surface; the first lens surface includes a second light-focusing curved surface along the direction of the second dimming axis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.