Transparent and polarizing vision element having areas which are associated with polarization filters that are respectively vertically and horizontally oriented
View Patent ↗A transparent and polarizing vision element ( 2 ) divided into several areas. At least two of said areas are associated with a luminous polarization filter. The light flowing through the element is allocated differently for two the areas according to a direction of polarization of the light. At least one polarization filter is oriented vertically, and at least one polarization filter is oriented horizontally in relation to the usual position of the element.
1. A transparent and polarizing vision element divided into several zones, at least two of said zones being associated with a light polarizing filter, the light traversing the element being affected differently for two of said zones according to a direction of polarization of said light,
the element a spectacle lens and comprising:
a first zone associated with a polarizing filter oriented vertically with respect to a use position of the element, said first zone being located in a lateral part of the element with respect to the use position;
a second zone associated with a polarizing filter oriented horizontally, the element being characterized in that the second zone is located in the upper part of the element with respect to the use position; and
a third zone that is not-polarizing and is located in the lower part of the element with respect to the use position,
wherein
the element comprises two first zones, each associated with a polarization filter oriented vertically relative to the position of use of the element and each located adjacent to a lateral edge of the element, and
the second and third zones are located between said two first zones, said third zone being located below said second zone in the use position of the element, and
said two first zones are separated by a distance lying between 10 and 60 mm in a central portion of said element.
2. The element as claimed in claim 1 , in which the first zone associated with the vertically oriented polarization filter extends over a width going from the outer lateral edge of said element to a distance lying between 5 and 75 mm, measured on a straight line going from said outer lateral edge toward the optical center of said element.
3. The element as claimed in claim 2 , in which the first zone associated with the vertically oriented polarization filter extends to a distance lying between 5 and 30 mm from the outer lateral edge of the element.
4. The element as claimed in claim 1 , in which said two first zones are separated by a distance lying between 10 and 40 mm in a central portion of said element.
5. The element as claimed in claim 4 , in which said two first zones are separated by a distance lying between 20 and 40 mm in a central portion of said element.
6. The element as claimed in claim 2 , in which the limit, between the second zone associated with a horizontally oriented polarization filter and the third zone associated with no polarization filter, passes between the optical center of said element and a point situated 20 mm beneath said optical center.
7. The element as claimed in claim 6 , in which the limit between the second and third zones passes between the optical center and a point situated 10 mm beneath said optical center.
8. A vision device comprising a pair of spectacles, said transparent vision element according to claim 1 constituting one lens of said pair of spectacles.