Optical system for projecting an IR or UV test signal with optical alignment of the projection axis in the visible spectral region
US8692995B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 19, 2009 |
| Grant date | Apr 8, 2014 |
| Priority date | — |
| Expiry date | Sep 8, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B23/10
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An optical system for testing IR or UV sensors, comprises input optics, output optics having a reticule disposed on the associated optical axis, a radiation source which emits radiation in the visual spectral region and in the infrared or ultraviolet spectral regions, and a beam splitter for simultaneously visualizing an object scene illuminated by the radiation source with the reticule through the output optics into the eye of an observer. The input optics comprise a lens, the imaging properties of which in the visual spectral region are equal to the imaging properties in the infrared or ultraviolet spectral region, and the beam splitter is a dichroic beam splitter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.