Device for optical-cable transport and combination of light images
US4735473A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 5, 1986 |
| Grant date | Apr 5, 1988 |
| Priority date | — |
| Expiry date | May 5, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2027/0145
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
In a device for optical-cable transport and combination of light images, the ends of an optical cable forming part of the device are coupled with lenses which are in turn associated with an optical system for dispersing radiation as a function of the wavelength in order to suppress any raster effect. This optical system is constituted at one end of the optical cable by a reflecting holographic mirror, the chromatic aberrations of which form the dispersion. At the other end of the cable, the optical system consists of a partially transparent holographic mirror for reflecting a first image to be transported and re-forming this image by suppressing the aberrations and combining said first image with a second image. The first image can be a synthetic image displayed on a CRT indicator and the second image can be the surrounding landscape in an application such as a helmet sight visor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.