SUPER-WIDE-ANGLE SOLAR-BLIND PHOTODETECTOR HEAD Russian patent published in 2015 - IPC G01J1/42 G02B13/14 

FIELD: physics.

SUBSTANCE: photodetector head comprises two groups of lenses and an aperture diaphragm in between. The first group of lenses has a negative optical power and consists of two negative convex-concave menisci and a separate positive lens. The second group of lenses has a positive optical power and consists of a separate positive lens and a double-lens glued positive component. The lenses are made of materials with good ultraviolet radiation transmission. A first group of filters is placed between the negative convex-concave meniscus and the separate positive lens, and a second group of filters is placed between the separate positive lens and the aperture diaphragm.

EFFECT: larger angular field of view and longer object detection range.

21 cl, 1 dwg