Time of flight sensors with light directing elements
US12164062B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 9, 2020 |
| Grant date | Dec 10, 2024 |
| Priority date | — |
| Expiry date | Aug 10, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10F39/184
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A time of flight sensor includes at least one demodulation pixel. Each demodulation pixel includes a semiconductor substrate; a charge generation region in the semiconductor substrate, the charge generation region having a lateral extent, the charge generation region being configured to convert light into charge carriers; a light directing element in the charge generation region of the semiconductor substrate, the light directing element being configured to direct light through at least a portion of the lateral extent of the charge generation region; a collection region in the semiconductor substrate, the collection region being configured to collect the charge carriers generated in at least a portion of the lateral extent of the charge generation region, and a readout component in electrical communication with the collection region, the readout component being operable to control an electrical coupling between the charge generation region and the collection region.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.