Optical device and a method for aiming and visually indicating a reading area
US7075663B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 14, 2004 |
| Grant date | Jul 11, 2006 |
| Priority date | — |
| Expiry date | Oct 14, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B27/20
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The invention relates to an optical device for aiming along an optical axis and visually indicating a reading area, comprising at least an illuminating assembling acting on a portion of the reading area along an optical emission path. The illuminating assembly comprises a light beam emitting source, a diaphragm having a preset shape, such diaphragm being effective to select a portion of the light beam generated by said emitting source, and a converging lens placed, on the optical emission path, downstream of the diaphragm and adapted to collimate the shaped light beam coming from the diaphragm and project it onto a portion of the reading area. The device of this invention is at once economical and accurate (i.e. capable of producing sharp images), thereby providing the user with a clear cut indication of the reading area being aimed regardless of the distance of the latter from the device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.