Compact aiming light assembly and imaging module for, and method of, generating an aiming light spot with increased brightness and uniformity from a light-emitting diode over an extended working distance range in an imaging reader
US9141833B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 17, 2013 |
| Grant date | Sep 22, 2015 |
| Priority date | — |
| Expiry date | Oct 4, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K7/10732
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An aiming light assembly generates an aiming light spot with increased brightness and uniformity over a range of working distances in which targets are electro-optically read by image capture. The assembly includes a light emitting diode (LED) for emitting an aiming light beam, a field stop through which the aiming light beam passes, an aiming lens for optically modifying the aiming light beam passing through the field stop to form the aiming light spot over the range of working distances, and a field lens located in the vicinity of the field stop and operative for imaging the LED downstream of the field stop and in the vicinity of a lens aperture of the aiming lens.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.