公开(公告)号：US20220252450A1

公开(公告)日：2022-08-11

申请号：US17613529

申请日：2020-05-19

申请人： IMEC VZW ,  Stichting IMEC Nederland

发明人： Chris VAN LIEMPD ,  Andres Felipe VASQUEZ QUINTERO ,  Herbert DE SMET

IPC分类号： G01J1/44 ,  G02F1/133 ,  G02F1/137 ,  G02C7/10 ,  G02C7/04

摘要： A smart contact lens (400) for detecting a ratiometric change in an incident light (126) intensity is provided, including one or more, preferably concentric, rings (410-1, 410-2, . . . , 410-N) of a liquid crystal display, LCD, type, each ring being operable between a state having a lower attenuation of light and a state having a higher attenuation of light; a circuit (420, 100, 101) for detecting a ratiometric change in an incident light intensity; and a controller (430) configured to operate the one or more rings based on an intensity of an incident light and to, as a response to the circuit (420, 100, 10 101) detecting a ratiometric change in the intensity of the incident light from a higher intensity state to a lower intensity state indicating that at least a beginning of a blinking of an eye of a user has occurred, initiate a re-polarization of the one or more rings. A method of operating the smart contact lens and various uses of the circuit are also provided.