Method and apparatus for optically reading target while folding reflected light
US7267276B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 8, 2004 |
| Grant date | Sep 11, 2007 |
| Priority date | — |
| Expiry date | Sep 12, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K7/10722
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In an apparatus for optically reading a target based on light reflected from the target, an imaging lens with a first optical axis is provided so that the reflected light enters into the imaging lens. A photodetector having an active area and a second optical axis different from the first optical axis is provided. The imaging lens focuses the reflected light on the active area of the photodetector. A fold mechanism is arranged between the imaging lens and the photodetector. The fold mechanism folds an optical path of the reflected light between the imaging lens and the photodetector to adjust a length of the optical path while keeping each of the first and second optical axes constant.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.