Hologram scanner
US4540247A · kind A · utility
8Cited by
2References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 21, 1982 |
| Grant date | Sep 10, 1985 |
| Priority date | — |
| Expiry date | Jun 21, 2002 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B5/32
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A hologram scanner includes a rotatable hologram disk on which a plurality of hologram lenses are arranged circumferentially, and a light beam guide mechanism for successively shifting irradiation regions in a predetermined direction with respect to the direction of rotation of the hologram disk, to apply a light beam successively to the hologram lenses on the hologram disk, so that the scanning of a reading window with the light beam is effected in all directions with high density. The hologram scanner is employable as a bar code reading device in a POS or UPC system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.