Slim scan module with dual detectors
US5552592A · kind A · utility
25Cited by
44References
34Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 29, 1994 |
| Grant date | Sep 3, 1996 |
| Priority date | — |
| Expiry date | Sep 29, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K2207/1018
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An optical scanning system for scanning indicia having portions of differing light reflectivity has a light emitter assembly, with a single light source, for emitting a beam of light to scan across the indicia. A first optical detector receives light reflected back from a first portion of the indicia. A second optical detector receives light reflected back from a second portion of the indicia. Each of the optical detectors includes a photodetector, a lens and an aperture which is disposed between the photodetector and lens.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.