Apparatus for manufacturing holographic optical element, and apparatus for reconstructing holograms
US11188026B2 · kind B2 · utility
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7Claims
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Key dates
| Filing date | Jan 9, 2020 |
| Grant date | Nov 30, 2021 |
| Priority date | — |
| Expiry date | Jun 11, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03H2223/23
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An apparatus for manufacturing a hologram includes a holographic optical element on which a first interference pattern of a first signal beam and a first reference beam is recorded and a second interference pattern of a second signal beam modulated by a Fourier lens and a second reference beam is recorded. Also, an apparatus for reconstructing a hologram by using the holographic optical element is provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.