Laser particle projection system
US9366861B1 · kind B1 · utility
40Cited by
7References
5Claims
0Family size
Inventor
Key dates
| Filing date | Oct 25, 2013 |
| Grant date | Jun 14, 2016 |
| Priority date | — |
| Expiry date | Oct 25, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2330/12
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An improved particle effect projector is disclosed that reduces the energy density of a laser beam projected through a movie theater or other entertainment venue, comprising an F-theta lens, a beam expander and a beam focuser with a long focal length that approximates the distance between the particle effect projector and the movie screen or other surface onto which the particle effect beam is being projected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.