Projector with temperature sensor and projector protection method
US11422445B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 7, 2019 |
| Grant date | Aug 23, 2022 |
| Priority date | — |
| Expiry date | Aug 20, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05D23/19
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A projector protection method includes: multiple temperature sensors detect temperatures of multiple areas in a projector to obtain multiple temperature parameters respectively; a processor lowers an output power of a laser source when any temperature parameter corresponding to one of areas falls into corresponding one of multiple first temperature intervals and multiple fans in the projector are set to a maximum speed; and the processor turns off the laser source when any temperature parameter corresponding to one of areas falls into corresponding one of multiple second temperature intervals. The second temperature interval and the first temperature interval corresponding to the same temperature parameter are different from each other.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.