RECEPTION OPTICAL SYSTEM OF PANORAMIC OPTOELECTRONIC DEVICE Russian patent published in 2009 - IPC G02B13/06 G02B17/08 

FIELD: physics; optics.

SUBSTANCE: system has two identical channels 1 and 2 with parallel optical axes 3, 4. Each channel has an optical panoramic unit 5, made in form of a first convex refracting surface 6, first convex reflecting surface 11, superimposed with the aperture diaphragm 12, second concave reflecting surface 13, flat refracting surface 9, behind which there is a back focal plane 10 of unit 5, in which there is a field diaphragm 14, which is superimposed with radiation receiver 15. Centres of curvature of refracting 6, 9 and reflecting 11, 13 surfaces of channels lie on optical axes 3 and 4, respectively. Their exposure apertures are made in form of sectors, the peaks of centre angles α of which lie on an optical axis. Values of α are equal and are selected such that, the centre angles of sectors of the same surface and diaphragms of channels make up a sum angle of 360°. Coinciding centre angles of sectors of surfaces 6, 11 and the aperture diaphragm lie symmetrically about the optical axis of the channel with coinciding centre angles of sectors of surfaces 13, 9 and the field diaphragm.

EFFECT: increase of field angle close to a hemisphere through complete elimination of the dark field around the optical axis and limitation of the aperture ratio of the system.

3 dwg