Luminaire with electrochromic film reflector
US10962201B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 25, 2019 |
| Grant date | Mar 30, 2021 |
| Priority date | — |
| Expiry date | Oct 25, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/0095
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A luminaire includes a lightguide panel that is configured to receive light from a light source through an edge thereof and emit light through major surfaces thereof. Further, the luminaire includes an electrochromic film that is disposed on one of the major surfaces of the lightguide panel to adjust an amount of light exiting through the one major surface by controlling an opacity of the electrochromic film. The opacity of the electrochromic film is controlled by controlling an electrical power supplied thereto. In another example, the electrochromic film is disposed on a major surface of a lens that is disposed below and spaced apart from a light source that emits light in a first direction. The opacity of the electrochromic film is controlled by controlling the electrical power supplied thereto to adjust an amount of light that is reflected by the lens to a second direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.