Phase modulating apparatus and phase modulating method
US7209279B2 · kind B2 · utility
8Cited by
2References
26Claims
0Family size
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Key dates
| Filing date | Oct 25, 2002 |
| Grant date | Apr 24, 2007 |
| Priority date | — |
| Expiry date | Oct 25, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03H2225/32
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An adder unit (60e) reads a desired CGH pattern from a pattern memory unit (60a) and a phase distortion correction pattern from a distortion-correction pattern memory unit (60d) and adds both patterns together to generate a phase distortion corrected pattern. A control unit (60g) controls a phase modulation module (40) in accordance with the phase distortion corrected pattern. Accordingly, phase-modulated light based on the desired phase pattern can be generated precisely, easily and quickly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.