Dynamic focus calibration, such as dynamic focus calibration using an open-loop system in a bar code scanner
US8245936B2 · kind B2 · utility
3Cited by
15References
27Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 6, 2010 |
| Grant date | Aug 21, 2012 |
| Priority date | — |
| Expiry date | Apr 1, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K7/10811
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A system and method for recalibrating a bar code scanner or other optical system is described. In some cases, the system dynamically adjusts the focal length of a lens assembly based on open-loop process, such as based on feedback related to a distance between the lens assembly and an imaged object. In some cases, the system dynamically adjusts the lens assembly in order to provide auto focusing or zoom adjustment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.