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

Claim 14:
15. A method comprising:
generating a primary drive signal to drive a 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
generating a secondary drive signal to drive 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, dispersion properties of a secondary active material of the at least one secondary liquid crystal element and dispersion properties of a primary active material of the primary liquid crystal element, wherein the at least one secondary liquid crystal element is arranged on an optical path of polychromatic light exiting the primary liquid crystal element, and the dispersion properties of the secondary active material are different from 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.