Automatic optical projection scanner for omni-directional reading of bar code symbols within a confined scanning volume
US6860427B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 9, 2002 |
| Grant date | Mar 1, 2005 |
| Priority date | — |
| Expiry date | Dec 9, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K2207/1018
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An automatic scanner which can be used at a point-of-sale (POS) station. The scanner provides a confined scanning volume, so as to avoid unintentional scanning of nearby objects that are located outside of this confined scanning volume. This scanner can be operated in an automatic hands-on mode of operation, or also operated as a stationary laser projection scanner in an automatic hands-free mode of operation. A collimated scanning pattern is projected from the hand-supportable device about a projection axis. The collimated scanning pattern intersects the projection axis within a narrowly confined scanning volume so that bar code symbols disposed within this scanning volume can be read omnidirectionally.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.