Omnidirectional optical scanning apparatus
US3947816A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 1, 1974 |
| Grant date | Mar 30, 1976 |
| Priority date | — |
| Expiry date | Jul 1, 1994 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K7/10871
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An omnidirectional optical system is arranged for scanning bar coded labels passing a rectangular scanning window with a plurality of interlaced scans in a plurality of differing directions whereby the labels are completely scanned irrespective of orientation. The interlaced and plural directive scanning rays are generated by directing a beam of light, from a laser or like light source, onto a rotating multi-faceted mirror for deflecting the light beam in a line extending in a given direction. A set of fixed mirrors is positioned to deflect the light beam in a number of laterally displaced scanning segments all parallel to the line extending in the given direction. A pair of fixed end mirrors are arranged for reflecting the light from half of the segments back onto the other half of the segments to provide the intersecting scanning pattern. Beam splitting mirrors are interposed in the light beam from the laser for providing additional light beams directed onto the rotating mirror to provide an interlaced raster.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.