Light-condensing device and method of fabricating the same
US8176912B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 6, 2009 |
| Grant date | May 15, 2012 |
| Priority date | — |
| Expiry date | Sep 11, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03F7/2059
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A light-condensing device and a method of fabricating the same are provided. The light-condensing device includes a central block, a pair of vertical diffraction grating blocks respectively located left and right of the central block, and a pair of horizontal diffraction grating blocks respectively located above and below the central block. The vertical diffraction grating blocks include parallel vertical diffraction gratings in the form of lines extending in the direction of a vertical axis, and the horizontal diffraction grating blocks include parallel horizontal diffraction gratings in the form of lines extending in the direction of a horizontal axis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.