ELECTRONIC GLASSES Russian patent published in 2019 - IPC G02C7/10 A61F9/02 

FIELD: optics.

SUBSTANCE: glasses comprise at least one eyeglass lens comprising a liquid crystal cell (LC), the transmission (TR) of which can be varied by the control means; a tracking tracer (ET), at least one sensor (IL, IR) for measuring brightness of visible light falling on it, located on a spectacle lens on the side of the eye and measuring brightness of light passing through the eyeglass lens. Sensor (IL, IR) comprises an imaging system with a camera, or at least three sensors applying a coordinate system, or a faceted eye and determines the brightness of visible light incident on it from the direction of eye observation defined by a tracker (ET), and a feedback control circuit (MC) for controlling transmission of the liquid crystal cell (LC). Preset value is set for brightness on eye. Control circuit receives the brightness measured by the above sensor (IL, IR) in the eye observation direction as the current value.

EFFECT: technical result is improved visibility for owner of glasses in different conditions.

19 cl, 12 dwg