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Liquid crystal device for compensating for aberration, optical pickup including liquid crystal device, and optical recording and/or reproducing apparatus employing optical pickup

  • US 20060146206A1
  • Filed: 01/04/2006
  • Published: 07/06/2006
  • Est. Priority Date: 01/05/2005
  • Status: Active Grant
First Claim
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1. A method of manufacturing an aberration-compensating liquid crystal device, comprising:

  • positioning a gray scale mask having an absorption rate distribution corresponding to that of aberrations to be corrected on a liquid crystal cell containing a mixture of liquid crystals and monomers injected between a pair of transparent substrates; and

    irradiating the liquid crystal cell on which the gray scale mask has been positioned with UV light so that the monomers undergo photopolymerization into polymer and phase separation into a polymer-existing region and a liquid crystal-existing region, thereby forming a liquid crystal layer between the substrates having a phase difference distribution corresponding to that of aberrations to be corrected.

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