OPTICAL SYSTEM FOR GENERATING IMAGE OF OBJECT IN TWO FIELDS OF VISION Russian patent published in 2009 - IPC G02B17/08 

FIELD: physics; optics.

SUBSTANCE: present invention can be used, for example, in aircraft onboard surveillance systems with detector arrays. The optical system has narrow and wide field of vision channels. The narrow field of vision channel, in the direction of the beam, there are series-fitted concave aspherical mirror with a central opening, switching convex aspherical mirror, as well as a lens adjuster shared by both channels, a five-lens projection lens, protective glass, cooled diaphragm and a filter. To switch on the wide filed of vision channel, the switching convex aspherical mirror is moved away from the path of the beam and is replaced by a switching lens objective. Entrance pupils of the channels are mated with the cooled diaphragm. Images in both channels are constructed in one plane. The entrance pupil of the narrow field of vision channel is on the concave aspherical mirror, and the entrance pupil of the wide field of vision channel is on the lens on the switching lens objective.

EFFECT: minimisation of the number of optical elements with aspherical surfaces, while retaining high image quality.

2 cl, 5 dwg