Smart-home device light rings with tapered transmissive sections for uniform output
US10914431B2 · kind B2 · utility
5Cited by
12References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 29, 2018 |
| Grant date | Feb 9, 2021 |
| Priority date | — |
| Expiry date | May 3, 2038 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B20/40
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A light ring assembly for a smart-home device may include a plurality of light-emitting diodes (LEDs) and a light guide, where the light guide may include a plurality of cutouts that receive the plurality of LEDs, and a plurality of transmissive sections between the plurality of cutouts where a thickness of the transmissive sections tapers as the transmissive sections extend away from the plurality of cutouts. The light ring assembly may also include an output surface that receives light emitted from the plurality of LEDs through the plurality of transmissive sections, where the output surface is substantially circular.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.