Microstructure-based diffusers for creating batwing lighting patterns
US10302275B2 · kind B2 · utility
7Cited by
80References
19Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 16, 2014 |
| Grant date | May 28, 2019 |
| Priority date | — |
| Expiry date | Apr 16, 2035 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21Y2115/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A light transmissive structure includes a light transmissive substrate having first and second opposing faces and array of microprism elements on the first face. A respective microprism element includes at least one ring comprising a plurality of microstructure pyramids that is rotated randomly and/or pseudorandomly on the first face about an axis that is orthogonal to the substrate relative to at least one other microprism element. The light transmissive structure is configured to receive light from a light source facing the first face and distribute the light emerging from the second face in a 2D batwing distribution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.