Integrated driver and heat control circuitry in tunable optical devices
US11493823B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 11, 2022 |
| Grant date | Nov 8, 2022 |
| Priority date | — |
| Expiry date | May 11, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2203/15
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
According to various embodiments, a tunable optical device comprises a tunable optical metasurface on a substrate with an integrated driver circuit. In some embodiments, the tunable optical device includes a photon shield layer to prevent optical radiation from disrupting operation of the driver circuit. In some embodiments, the tunable optical device includes a diagnostic circuit to detect and disable defective optical structures of the metasurface. In some embodiments, the tunable optical device includes an integrated heater circuit that maintains a liquid crystal of the metasurface above a minimum operating temperature. In some embodiments, the tunable optical device includes an integrated lidar sequencing controller, a steering pattern subcircuit, and a photodetector circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.