Patent ID: 9470901
Filing Date: 2016-10-18
CPC Classification: G02B

Claim Text:
1. A viewing apparatus comprising: an eyepiece; a polarized lens; one or more prisms; and an objective lens; wherein said polarized lens is shaped to provide an optically correct image and orientated in a vertical plane to substantially filter horizontal light and is fixed between the eyepiece and one of the one or more prisms and in the light path from the one of the one or more prisms; said polarized lens is positioned in a mounting frame in a correct placement, alignment and orientation with respect to the shape of the polarized lens to provide an optically correct image with polarized light that passes through the polarized lens; and the polarized lens has one or more guiding members to guide the positioning of the polarized lens to the correct oriented position that can be aligned with corresponding locating members on the mounting frame.