Patent ID: 7005186

Claim:
An optical element, comprising: (a) a first outer layer of a crosslinked polymer host material of a first stiffness, the first outer layer not including a light limiting dopant; (b) a first inner layer of a low crosslink density crosslinked epoxy resin host material next to the first outer layer, the first inner layer having a stiffness less than the first outer layer and including a light limiting dopant; (c) a second inner layer of a low crosslink density crosslinked epoxy resin host material next to the first inner layer, the second inner layer having a stiffness less than the first inner layer and including a light limiting dopant; and, (d) a second outer layer of a crosslinked polymer host material next to the second inner layer, the second outer layer having the same stiffness as the first outer layer, and the second outer layer not including a light limiting dopant.