Patent ID: 11927837
Assignee: PIXIERAY OY
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. An optical apparatus comprising:
eye-tracking means;
an active optical element per eye, comprising an active material encased between at least a first substrate and a second substrate, the first substrate and the second substrate being optically transparent;
means for controlling the active material in the active optical element to generate a plurality of optical powers; and
a processor configured to:
process eye-tracking data, collected by the eye-tracking means, to determine gaze directions of a user's eyes;
detect whether or not the user is looking through a predefined portion of the active optical element, based on a gaze direction of a given eye in front of which said active optical element is worn;
determine a given optical depth at which the user is looking; and
when it is detected that the user is looking through the predefined portion of the active optical element, generate a drive signal to drive said means to control the active material in the active optical element to produce a predefined optical power over the entirety of the active optical element based on the predefined portion of the active optical element and the given optical depth at which the user is looking;
detect when the user's gaze is moving towards a periphery of the predefined portion of the active optical element, based on a change in the gaze direction of the given eye; and
when it is detected that the user's gaze is moving towards the periphery of the predefined portion of the active optical element, generate at least one other drive signal to drive said means to control the active material in the active optical element to produce at least one intermediate optical power over the entirety of the active optical element, the at least one intermediate optical power lying in a range between a zero optical power and the predefined optical power.