Back to results
US 11,994,756 B2Granted
Method for making a gradient color polar lens with a non-polar near vision zone
AssigneeEssilor International
InventorsHao-Wen Chiu, Srinivasan Balasubramanian, Peiqi Jiang
Life of this patent
Estimating the term…
Abstract
Disclosed are methods for preparing partially polarized optical articles. A polarizing element is used to cover at least a portion of the front surface of an optical article to form a polarizing zone and a non-polarizing zone on the optical article. The optical article is then tinted to produce a gradual color transition between the polarizing zone and non-polarizing zone of the optical article.
Claims12
A method of preparing a partially polarized sunglasses lens, the method comprising:
- providing a lens substrate comprising a front surface and a back surface;
- covering a portion of the front surface of the lens substrate with a polarizing element to form a polarizing zone that covers a far vision zone of the lens substrate and a non-polarizing zone that covers the near vision zone of the lens substrate, said near vision zone includes a bottom 10 to 50% area of the optical lens;
- and
- gradient-tinting the lens substrate to reduce color difference and/or produce a gradual color transition between the polarizing zone and the non-polarizing zone.
1 more element
A partially polarized sunglasses lens comprising:
- a lens substrate comprising a front surface and a back surface;
- at least a portion of a polarizing element covering a portion of the front surface of the lens substrate, defining a polarizing zone that covers a far vision zone of the lens substrate and a non-polarizing zone that covers the near vision zone of the lens substrate, of the sunglasses lens, said near vision zone includes a bottom 10 to 50% area of the optical lens;
- a gradient-tint layer covering the non-polarizing zone and/or polarizing zone with gradual color transition between the polar zone and the non-polar zone.
Dependencies are inferred from the claim text.