Method for obtaining full-color hologram optical element using photopolymer, and head-up display apparatus with the same
US11650541B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 20, 2018 |
| Grant date | May 16, 2023 |
| Priority date | — |
| Expiry date | Nov 13, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03H2260/12
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method of manufacturing a full-color holographic optical element in a full-color holographic optical element manufacturing apparatus including a lens and a holographic recording medium located farther away than a focal length of the lens, the method including: allowing a signal beam including a mixture of laser beams having wavelengths of R (Red), G (Green), and B (Blue) to be incident on the lens; and recording a hologram in such a manner that a reference beam including a mixture of laser beams having wavelengths of R, G, and B is allowed to be incident on the holographic recording medium, wherein the holographic recording medium is configured with a single medium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.