Low profile planar scanner
US5892214A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 20, 1996 |
| Grant date | Apr 6, 1999 |
| Priority date | — |
| Expiry date | Nov 20, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K7/10693
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A bar code scanner includes a window and a rotary spinner mounted therebelow having a plurality of circumferentially adjoining mirrored facets for sweeping light along a scanned arc. A light source projects a scan beam on the spinner, and a plurality of pattern mirrors are optically aligned with the spinner along the scanned arc in a forward path for diverting the scan beam outwardly through the window to a bar code for effecting a scattered beam therefrom. A collection mirror is optically aligned with the spinner along the scanned arc for receiving the scattered beam in a return path from the pattern mirrors and spinner in turn. A detector is optically aligned with the collection mirror for receiving the scattered beam, and a decoder is provided for decoding the scattered beam.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.