UV SUN SENSOR Russian patent published in 2023 - IPC G01C21/24 H01L31/55 

FIELD: space navigation.

SUBSTANCE: invention and is intended to provide a spacecraft with information about its orientation relative to the Sun. The essence of the claimed invention is as follows. The ultraviolet sensor of the angular coordinates of the sun has a housing in which, directly on the printed circuit board containing the electronic circuit for processing data from the photodetector, a four-segment silicon carbide photodiode used as a photodetector is placed, operating in the wavelength range of 200-370 nm with a sensitivity peak of region of the light spectrum 280 nm. At the same time, a diaphragm is placed above the photodiode, and this diaphragm is an ultraviolet light filter with light transmission in the range of 270-290 nm, with a light transmission peak in the 280 nm region and with a light-absorbing coating applied to it, in which a square window of a given size is made.

EFFECT: registration of the angular coordinates of the Sun with higher accuracy due to the exclusion of the influence of spurious illumination on the output signal.

1 cl, 3 dwg