Automatic boresighting device for an optronic system
US5054917A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 13, 1990 |
| Grant date | Oct 8, 1991 |
| Priority date | — |
| Expiry date | Sep 13, 2010 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF41G3/326
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
This system enables the boresighting of the optical axes of a system comprising, for example: an infrared distance measuring device, a television camera, sensitive in the visible band, and a laser telemeter which does not emit radiation in the ranges of spectral sensitivity of the distance measuring device and of the camera. One embodiment includes: PA1 a collimated radiation source, associated with the laser; PA1 a wide-band collimator including, in its focal plane, a screen with holes cut out in it, constituting a reticle illuminated by an incandescent bulb, the surface of the screen being covered with glass micro-beads. The source associated with the laser forms a light spot on the screen, and this light spot is visible to the television camera. The holes form a reticle visible both to the television camera and to the distance measuring device. The distance measuring device determines the distance between the image of the reticle and a reference point on its image sensor. An image processor associated with the television camera determines the distance, on the image sensor of the camera, between the image of the reticle and the image of the light spot.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.