ELECTRONIC GLASSES Russian patent published in 2021 - IPC G02B27/01 

FIELD: glasses.

SUBSTANCE: invention relates to electronic glasses and to a system for suppressing bright light. The system for improving visibility by suppressing bright light is comprised of glasses for the wearer with at least one eye, containing at least one eyeglass lens. Said at least one eyeglass lens comprises a liquid-crystal cell (LC) transmittance whereof can be changed by an appropriate control tool; wherein the liquid-crystal cell (LC) is made so that the transmittance (TR) of the liquid-crystal cell (LC) can be switched between high transmittance and low transmittance states; a tool for control or adjustment of durations of the high transmittance state (T_on) of the liquid-crystal cell (LC) and a light source (S) comprising: a tool for control of durations of illumination and intensity of the light source (S) so that the light source emits light during the high transmittance state (T_on) of the liquid-crystal cell (LC). The time integral of the product of the light intensity of the light source (S) and the transmittance (TR) of the liquid-crystal cell (LC) remains constant within a preset clearance after changing the durations of the high transmittance state (T_on); wherein the tool for control or adjustment of the liquid-crystal cell (LC) is made so that the temporal position of the durations of the high transmittance state (T_on) during a period of the high transmittance state (T_on) and the time of the low transmittance state (T_off) can vary continuously or with interruptions, and/or that the duration of the period of the high transmittance state (T_on) and the time of the low transmittance state (T_off) can vary continuously or with interruptions; wherein the changes are determined by a secret encoding key.

EFFECT: provides an increase in the efficiency of adjustment of light transmittance.

7 cl, 12 dwg