Infrared optical element for proximity sensor system
US10551500B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 14, 2019 |
| Grant date | Feb 4, 2020 |
| Priority date | — |
| Expiry date | May 14, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S17/66
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An optical device includes an optical element. The optical element includes a first surface configured to receive light in a first direction and a second surface that is non-parallel to the first surface. The second surface is configured to transmit a first portion of the light in a second direction that is different from the first direction and internally reflect a second portion of the light that is distinct from the first portion of the light. The optical element further includes a third surface configured to receive the second portion of the light from the second surface and reduce internal reflection of the second portion of the light by the third surface. Also disclosed is a method of steering light by the optical device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.