Controlling laser power
US9006629B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 17, 2012 |
| Grant date | Apr 14, 2015 |
| Priority date | — |
| Expiry date | Sep 13, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/3164
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An intensity of radiation emitted from at least two laser diodes of a projecting apparatus is optimized by providing an offset distance between at least two focal points of the at least two laser diodes and providing a maximum value for radiation intensity emitted by each of the laser diodes, irrespective of simultaneous transmission by one of the laser diodes with another of the laser diodes. The intensity of the radiation emitted from each of the at least two laser diodes is adjusted such that an aggregated value of the radiation intensity emitted by all of the laser diodes within a predefined period of time may exceed a threshold value allowed for the maximum permissible exposure to radiation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.