Patent ID: 7701641
Filing Date: 2010-04-20
Classification: B29D,G02B,G02C

Abstract:
1. A method of producing a wavefront aberrator with increased stability to thermal and/or solar exposure which comprises: a. producing between two transparent plates a layer of polymerizable material comprising at least one polymer and one or more monomers wherein said polymerizable material has an initial refractive index; b. providing a simultaneous thermal and a variable photo-stimulus to said polymerizable material to cause said polymerizable material to (i) undergo a variable pattern of polymerization without completely depleting said one or more monomers and (ii) attain a first intermediate variable refractive index profile; c. promoting a diffusion process by heating the partially cured polymerizable material of (b) to cause diffusion of the uncured monomer from the lesser cured regions to the higher cured regions to attain a second intermediate variable refractive index profile; and d. providing a simultaneous thermal and a uniform photo-stimulus to said partially cured polymerizable material of (c) to cure substantially all of the remaining one or more monomers to attain a final variable refractive index profile, wherein Zernike polynomial terms harmonic to those desired in said final variable refractive index profile are included in said initial refractive index profile to account for changes in the refractive index profile that occur during said diffusion process, whereby said wavefront aberrator is stable to thermal and/or solar conditions.