Large-scale uniform optical focus array generation with a phase spatial light modulator
US11985451B2 · kind B2 · utility
1Cited by
6References
24Claims
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Key dates
| Filing date | Feb 21, 2020 |
| Grant date | May 14, 2024 |
| Priority date | — |
| Expiry date | Jul 4, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03H2001/0816
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of generating uniform large-scale optical focus arrays (LOT As) with a phase spatial light modulator (SLM) includes identifying and removing undesired phase rotation in the iterative Fourier transform algorithm (IFTA), thereby producing computer-generated holograms of highly uniform LOT As using a reduced number of iterations as compared to a weighted Gerchberg-Saxton algorithm. The method also enables a faster compensation of optical system-induced LOT A intensity inhomogeneity than the conventional IFTA.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.