Method of forming an optical pattern, optical pattern formation system, and optical tweezer
US7527201B2 · kind B2 · utility
1Cited by
6References
14Claims
0Family size
Assignee
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Key dates
| Filing date | Aug 30, 2005 |
| Grant date | May 5, 2009 |
| Priority date | — |
| Expiry date | Feb 28, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03H2225/32
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Reading light (26) is phase-modulated by a phase-modulating spatial light modulator (12), the phase-modulated reading light (26) is Fourier-transformed, and an image of the Fourier-transformed reading light is focused on an output plane (24) to form an optical pattern. In this method, 0-order light in the phase-modulated reading light (26) is blurred on the output plane (24). As the 0-order light is blurred, the luminance of the 0-order light is reduced on the output plane (24). Since the 0-order light is not blocked, the shape of the optical pattern is not limited.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.