Tunable light projector
US11733598B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 4, 2019 |
| Grant date | Aug 22, 2023 |
| Priority date | — |
| Expiry date | Mar 18, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/4031
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A tunable light projector including the following is provided. A light source is configured to emit a light beam. A fixed optical phase modulator is disposed on a path of the light beam and is configured to modulate phases of the light beam. A tunable liquid crystal panel is disposed on the path of the light beam and a partial region of the tunable liquid crystal panel is configured to electrically switch the light beam between a structured light and a flood light. A driver is configured to control the light source and control the tunable liquid crystal panel to switch the light beam between the structured light and the flood light. The tunable liquid crystal panel includes: a first substrate; a second substrate; a liquid crystal layer; a first electrode layer; and a second electrode layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.