Edge-lit light assembly with light guiding structures
US6443582B1 · kind B1 · utility
37Cited by
11References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 30, 2000 |
| Grant date | Sep 3, 2002 |
| Priority date | — |
| Expiry date | Sep 24, 2020 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21Y2115/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A lamp for emanating light includes a light source and a lens having an axis. The lens has a radially outward light entering surface to introduce light from the light source into the lens in the form of an intra-lens beam. The light entering surface is at a radially outward edge of the lens. The lens also has an axially outward light exiting surface and a lens back surface, which has reflective stepped faces spaced apart by connecting faces. The reflective stepped faces are arranged at an angle to the lens axis to intercept the intra-lens beam and reflect a reflected beam through the axially outward light exiting surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.