Light modulation apparatus using a VCSEL array with an electromechanical grating device
US6967986B2 · kind B2 · utility
22Cited by
13References
101Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 16, 2002 |
| Grant date | Nov 22, 2005 |
| Priority date | — |
| Expiry date | Feb 12, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/423
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An apparatus for providing modulated light, that includes: a VCSEL array for generating an illumination beam from a plurality of emissive elements within the VCSEL array; a linear array of electromechanical grating devices for modulating the illumination beam to provide a plurality of diffracted orders; an obstructing element for blocking at least one of the plurality of diffracted orders; and means for conditioning the illumination beam to provide a suitable aspect ratio for incidence onto the linear array of electromechanical grating devices and/or remove unwanted spatial content.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.