Patent ID: 11971628
Assignee: PIXIERAY OY
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. An optical apparatus comprising:
a primary liquid crystal element;
at least one secondary liquid crystal element arranged on an optical path of polychromatic light exiting the primary liquid crystal element, the at least one secondary liquid crystal element comprising a secondary active material whose dispersion properties are different from dispersion properties of a primary active material of the primary liquid crystal element; and
at least one processor configured to:
generate a primary drive signal to drive the primary liquid crystal element to produce a first primary optical power for a first design wavelength, wherein the primary liquid crystal element, when driven, also produces at least a second primary optical power for a second design wavelength; and
generate a secondary drive signal to drive the at least one secondary liquid crystal element to produce a first secondary optical power for the first design wavelength and at least a second secondary optical power for the second design wavelength, based on the first primary optical power, the second primary optical power, the dispersion properties of the secondary active material and the dispersion properties of the primary active material;

wherein when produced at the at least one secondary liquid crystal element, the first secondary optical power and the second secondary optical power compensate for chromatic aberration produced by the primary liquid crystal element on the polychromatic light for the first design wavelength and the second design wavelength.