Electronic devices with low-reflectance coatings
US12085734B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 19, 2021 |
| Grant date | Sep 10, 2024 |
| Priority date | — |
| Expiry date | Oct 12, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F1/163
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A head-mounted device may have optical modules that present images to a user's left and right eyes. Each optical module may have a lens barrel with a low-reflectance coating, a display coupled to the lens barrel that generates a visible-light image, a lens mounted to the lens barrel through which the image is viewable from an eye box, an infrared light-emitting diode that emits infrared light that illuminates an eye box at an infrared wavelength through the lens, and an infrared camera that captures an image from the eye box at the infrared wavelength. The low-reflectance coating may be a low-visible-reflectance-and-low-infrared-reflectance coating that exhibits low-reflectance for visible light from the display and for infrared light at the infrared wavelength that is generated by the light-emitting diode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.