Patent ID: 11960157
Assignee: ESSILOR INTERNATIONAL
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A variable optical transmission device comprising:
a variable transmission optics configured to vary an optical transmission between an initial transmission value and a target transmission value; and
circuitry configured to control a transmission parameter of the variable transmission optics, wherein the circuitry is configured to control a response duration of the variable transmission optics as a function of the initial transmission value and the target transmission value, wherein
the circuitry is configured to control the response duration depending on a sign of a difference between the initial transmission value and the target transmission value, and
the circuitry is configured to control:
a first response duration for lowering an optical transmission of the variable transmission optics from an initial transmission value to a target transmission value, and
a second response duration for increasing the optical transmission from the initial transmission value to the target transmission value, the first response duration being different from the second response duration.