Electronic device with light diffuser
US10334184B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 16, 2016 |
| Grant date | Jun 25, 2019 |
| Priority date | — |
| Expiry date | Feb 18, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/20
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An electronic device may have an optical system that includes one or more light-based components. The light-based components may include light-emitting components such as light-emitting diodes or lasers and may include light-detecting components such as photodiodes or digital image sensors. The optical system may include a light diffuser. The light diffuser may diffuse light that is being detected by a light-detecting component or may diffuse light that is being emitted by a light-emitting component. Light diffusers in optical systems may be formed from patterned light diffuser layers on transparent substrates. Layers of sealant, thin glass layers, antireflection coatings, and other layers may be incorporated into the light diffusers. The light diffuser layers may operate at visible wavelengths and infrared wavelengths. An infrared light diffuser layer may be formed from a patterned silicon layer such as a patterned layer of hydrogenated amorphous silicon.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.