Method and apparatus for making polarized sunglasses

摘要

In the manufacture of gradient polarized sunglasses an optical retarder is used in front of a portion of a polarized lens to destroy the linear polarization of incoming light to render that portion of the sunglass lens non-polarized, thus to permit viewing of polarized displays through that non-polarized portion of the polarized sunglass lens.

主权项

1. A method for fabricating sunglasses having a polarized region and an un-polarized region comprising the steps of:
providing polarized sunglass lenses; and, overlying the front portion of the polarized lenses with an optical retarder whereby polarized light impinging on the optical retarder is depolarized providing an un-polarized portion of the sunglass lens.