US 12,276,871 B2
High efficiency polarizing lens with color enhancement
Srinivasan Balasubramanian, Dallas, TX (US); Elliot French, Dallas, TX (US); and Aref Jallouli, Dallas, TX (US)
Assigned to Essilor International, Charenton-le-pont (FR)
Filed by ESSILOR INTERNATIONAL, Charenton-le-Pont (FR)
Filed on Sep. 15, 2021, as Appl. No. 17/475,802.
Claims priority of application No. 20306098 (EP), filed on Sep. 25, 2020.
Prior Publication US 2022/0100005 A1, Mar. 31, 2022
Int. Cl. G02B 27/14 (2006.01); A61F 9/02 (2006.01); G02B 5/22 (2006.01); G02C 7/00 (2006.01); G02C 7/02 (2006.01); G02C 7/10 (2006.01); G02C 7/12 (2006.01)
CPC G02C 7/108 (2013.01) [G02B 5/223 (2013.01); G02C 7/12 (2013.01); G02C 2202/16 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A light filtering element, comprising:
at least one layer, a first layer of the at least one layer being stretched along a strain direction and including
a first narrowband dye, the first narrowband dye including a first narrowband dye peak absorbance wavelength with a first narrowband dye bandwidth; and
a first dichroic configured to absorb polarized light, the first dichroic dye including a first dichroic dye peak absorbance wavelength with a first dichroic dye bandwidth, molecules of the first dichroic dye being at least partially oriented along the strain direction;
at least 25% of the first dichroic dye being oriented along the strain direction; and
a polarization efficiency of the light filtering element being greater than 97%.