Microstructures for transforming light having Lambertian distribution into batwing distributions
US11391437B2 · kind B2 · utility
5Cited by
14References
9Claims
0Family size
Inventors
Key dates
| Filing date | Jan 29, 2019 |
| Grant date | Jul 19, 2022 |
| Priority date | — |
| Expiry date | Jan 29, 2039 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21Y2115/10
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A light transmissive substrate for transforming a Lambertian light distribution into a batwing light distribution. The light transmissive substrate includes a first surface comprising a plurality of microstructures, and a second surface on a side of the substrate opposite the first surface. The substrate is configured to receive light in a Lambertian distribution from a light source at the first surface and transform the light into a batwing distribution exiting the second surface. The batwing distribution having a peak intensity at about ±30° to about ±60° from X and Y axes, and a minimum intensity at nadir.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.