Projection apparatus that projects image using laser beams, control method of the same, and storage medium
US11106119B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 30, 2019 |
| Grant date | Aug 31, 2021 |
| Priority date | — |
| Expiry date | Aug 12, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2201/0438
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A projection apparatus comprises: a first laser beam source configured to output a visible laser beam; a second laser beam source configured to output an invisible laser beam; a scan unit configured to project an image by scanning a projection surface using the visible laser beam output from the first laser beam source and the invisible laser beam output from the second laser beam source; and a control unit configured to control a timing at which the first laser beam source outputs the visible laser beam and a timing at which the second laser beam source outputs the invisible laser beam so that, in a period corresponding to a target pixel in the image, the visible laser beam is output in a first period and the invisible laser beam is output in a second period different from the first period.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.