Lighting module with diffractive optical element
US8465172B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 17, 2009 |
| Grant date | Jun 18, 2013 |
| Priority date | — |
| Expiry date | Feb 3, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B19/0095
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A lighting module having an array of light-emitting elements on a substrate, at least one diffractive optical element arranged to receive light from the light-emitting elements and partially collimate the light. A method of packaging a lighting module including mounting at least one array of light-emitting elements on a substrate in a package, and enclosing the package with a window, the window has a diffractive optical element on a surface of the window closest to the array, the diffractive optical element arranged to partially collimate the light. A lighting module having an array of light-emitting elements on a substrate, at least one diffractive optical element arranged to receive light from the light-emitting elements and scatter the light into a random emission pattern to produce a uniform irradiance at a target surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.