Optical system
US6836377B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 22, 2002 |
| Grant date | Dec 28, 2004 |
| Priority date | — |
| Expiry date | Aug 22, 2022 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B1/31
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An optical system for illuminating and viewing a target (15) in which an illumination element (16) and a receiving element (13) are disposed behind a single optical window (14), and which obtains data essentially free of backscatter and stray light. The optical window (14) is configure such that is defines a shape having at least one focal curve, i.e., an ellipsoid shape dome. The illumination element (16) and the receiving element (13) are geometrically positioned on the focal curve plane or in proximity of the focal curve plane, such that, when illuminating, rays from the illumination element internally reflected from the optical window (14) will not incident on the receiving element (13).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.