Patent ID: 7656581
Filing Date: 2010-02-02
Classification: A42B,G02C

Abstract:
1. A polarizing transparent viewing element, having an optical surface divided into several zones associated with respective light-polarizing filters, light passing through said element being affected differently in two of said zones depending on a polarization direction of said light wherein: the orientation of the polarizing filter of a first zone of the several zones is oblique relative to a horizontal direction in an use position of the element with an angle between the orientation of the filter and the horizontal direction different from 90° and from 0°, said first zone being located in a lower portion of the optical surface with respect to the use position of the element; a second zone of the several zones is associated with a polarizing filter oriented horizontally with respect to the use position of the element, the first zone associated with the obliquely oriented polarizing filter being located, in the use position of the element, below the second zone associated with the horizontally oriented polarizing filter; and two third zones of the several zones being associated with a polarizing filter oriented vertically with respect to the use position of the element, said two third zones being located in opposed lateral portions of the element with respect to the use position of the element, and being spaced apart from each other with a non-zero separating distance, and said first zone and said second zone being located between the two third zones along a respective horizontal line extending between one of the third zones and the other of the third zones.