Actuator device, projection device and projection method
US11892760B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 21, 2022 |
| Grant date | Feb 6, 2024 |
| Priority date | — |
| Expiry date | Aug 19, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B26/0833
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The disclosure provides a projection device, an actuator device thereof, and a projection method adapted for the actuator device. The projection method includes disposing an optical element in a frame body, and disposing a driving assembly between a base and the frame body; controlling the driving assembly to drive the frame body by a signal so that the optical element reciprocally swings relative to the base based on a first, a second, and a third moving shaft. The signal includes a first driving signal corresponding to the first moving shaft, a second driving signal corresponding to the second moving shaft, and a third driving signal corresponding to the third moving shaft. The first and the second driving signal have a first frequency; the third driving signal has a second frequency different from the first frequency. The phase difference between the first and the second driving signal is not equal to zero.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.