Sinusoidal laser scanner with optical filter
US8717342B2 · kind B2 · utility
1Cited by
3References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 31, 2011 |
| Grant date | May 6, 2014 |
| Priority date | — |
| Expiry date | Aug 14, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2320/0233
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A scanning projector includes an optical filter. The optical filter exhibits a variable attenuation as a function of position. The scanning projector may scan sinusoidally in at least one dimension. The variable attenuation of the optical filter compensates for brightness variations due to sinusoidal scanning.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.