OPTICAL TELESCOPE Russian patent published in 2017 - IPC G02B23/16 

FIELD: physics.

SUBSTANCE: optical telescope includes a sealed casing like a pipe with an optical system disposed therein, including mirrors and a sliding visor disposed on the casing over the optical telescope entrance pupil parallel to its optical axis. The telescope is installed in the central cup zone shaped as an inverted truncated cone. Herewith the outer cup surface, the outer entrance pupil surface and the optical system mirror surface are covered with the electrically insulated conductive shells connected to the power supply located in the cup, and having an electric charge at the predetermined polarity changing frequency depending on the change of day or night at this lunar surface.

EFFECT: providing the mechanical protection and protection of the optical telescope elements from the charged lunar dust particle.

1 dwg