Optical scanner with beam directing holograms at window
US4591236A · kind A · utility
36Cited by
3References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 13, 1984 |
| Grant date | May 27, 1986 |
| Priority date | — |
| Expiry date | Feb 13, 2004 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K7/10663
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An optical scanner is improved by securing beam directing holograpic films to the transparent scanner window. The films alter the paths of beams at the window to provide scanning beams suitable for rear or side scanning of label-carrying products. A vertical scanning beam, which sweeps a path parallel to the window's leading edge, might be used to detect the approach of a product to be scanned.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.