Patent ID: 7045569

Claim:
An optical plastic lens having reduced temperature sensitivity comprising: a plastic host material having a temperature sensitive optical vector x 1 ; and a nanoparticulate material dispersed in said plastic host material having a temperature sensitive optical vector x 2 corresponding to said temperature sensitive optical vector x 1 ; wherein said temperature sensitive optical vectors x 1 and x 2 are defined by a change in refractive index of said plastic host material and said nanoparticle material, respectively, with respect to temperature change of said optical plastic lens and said temperature sensitive optical vector x 1 is directionally opposed to said temperature sensitive optical vector x 2 , to thereby reduce temperature sensitivity of said optical plastic lens in order to reduce a range of change of focal length of said optical plastic lens produced by a temperature change of said optical plastic lens and wherein said nanoparticle material is dispersed in said plastic host material such that there are no agglomerates and/or viods larger than 40 nm.