Light directing apparatus
US8628222B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 13, 2011 |
| Grant date | Jan 14, 2014 |
| Priority date | — |
| Expiry date | May 7, 2032 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21Y2115/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A light directing apparatus includes an optical substrate having a first side and a second side, a compound lens outer surface on a first portion of the first side of the optical substrate, the compound lens outer surface disposed in optical communication with the second side of the optical substrate, a first protrusion on a second portion of the first side of the optical substrate, the first protrusion disposed proximate the compound lens outer surface, and disposed in optical communication with the second side of the optical substrate, and a second protrusion on the second portion of the first side of the optical substrate, the second protrusion disposed proximate the first protrusion, and disposed in optical communication with the second side of the optical substrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.