Computer-generated hologram fabrication process, and hologram-recorded medium
US6813048B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 17, 2002 |
| Grant date | Nov 2, 2004 |
| Priority date | — |
| Expiry date | Jan 15, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03H2240/62
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A computer-generated hologram fabrication process that enables a plurality of original images to be observed with master-slave relations Original images 11, 12, a recording surface 20 and reference light R are defined on a computer, and a number of point light sources P11-1, . . . , P12-1, . . . as samples are defined on each original image. Given angles of spreading of object light beams emitted from individual point light sources are defined, and areas on the recording surface 20, at which object light beams emitted from point light sources defined on each original image 11, 12 with the thus limited given angles of spreading arrive, are determined as recording areas &agr;11 and &agr;12 corresponding to the original images 11 and 12. When there is an overlapping (hatched) portion in the recording areas, the overlapping portion is determined as a recording area corresponding to the master original image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.