Variable optical transmission device and associated control method
AssigneeEssilor International
InventorMarius Peloux
Life of this patent
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Abstract
A variable optical transmission device (2) comprising: —ariable transmission optics (4a, 4b) capable of varying an optical transmission between an initial transmission value (TV (ti)) and a target transmission value (TVtarget), and —a control unit (5) configured to control a transmission parameter of the variable transmission optics, wherein the control unit (5) is configured to control a response duration of the variable transmission optics as a function of the initial transmission value (TV (ti)) and the target transmission value (TVtarget).
Claims14
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.
A method for controlling a variable optical transmission device, comprising:
- controlling a transmission parameter of a variable transmission optics of the variable optical transmission device, wherein
- the method further comprises:
- controlling a response duration of the variable transmission optics as a function of an initial transmission value and a target transmission value, and
- the method further comprises:
- controlling the response duration depending on a sign of a difference between the initial transmission value and the target transmission value, comprising:
- controlling 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
- controlling a second response duration for increasing the optical transmission from an initial transmission value to a target transmission value, the first response duration being different from the second response duration.
A variable optical transmission device comprising:
- variable transmission optics means for varying an optical transmission between an initial transmission value and a target transmission value;
- and
- control means for controlling a transmission parameter of the variable transmission optics means, wherein the control means control a response duration of the variable transmission optics means as a function of the initial transmission value and the target transmission value, wherein
- the control means control the response duration depending on a sign of a difference between the initial transmission value and the target transmission value, and
- the control means control:
- a first response duration for lowering an optical transmission of the variable transmission optics means 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.
Dependencies are inferred from the claim text.