US 12,072,518 B2
Optical articles with specific color glare
Srinivasan Balasubramanian, Dallas, TX (US); Aref Jallouli, Dallas, TX (US); and Christelle Marck, Charenton-le-Pont (FR)
Assigned to Essilor International, Charenton-le-pont (FR)
Appl. No. 17/299,832
Filed by Essilor International, Charenton-le-pont (FR)
PCT Filed Dec. 4, 2019, PCT No. PCT/EP2019/083671
§ 371(c)(1), (2) Date Jun. 4, 2021,
PCT Pub. No. WO2020/115128, PCT Pub. Date Jun. 11, 2020.
Claims priority of application No. 18306636 (EP), filed on Dec. 6, 2018.
Prior Publication US 2022/0026612 A1, Jan. 27, 2022
Int. Cl. G02B 5/30 (2006.01); G02B 5/20 (2006.01); G02C 7/10 (2006.01); G02C 7/12 (2006.01)
CPC G02B 5/3025 (2013.01) [G02B 5/20 (2013.01); G02C 7/104 (2013.01); G02C 7/12 (2013.01)] 10 Claims
OG exemplary drawing
 
1. An optical article configured to color plane-polarized light transmitted through the optical article, the optical article having a color (A) and comprising:
an optical article base material;
a polarizing layer having a first color tint of color (B), the first color tint being provided within the polarizing layer; and
a second color tint of color (C);
the colors (A, B, C) being described in the CIELAB color space;
wherein:
the second color of tint of color (C) is provided within the polarizing layer;
a difference in polarizing efficiency (ΔPE(λ)) of light transmitted through the optical article is at least 30% between a first visible wavelength and a second different visible wavelength;
an overall polarizing efficiency (PE) of the optical article is less than 90%;
a color difference (ΔE), calculated in the CIELAB color space, between the optical article color (A) and the first color tint color (B) is greater than 2;
a randomly-polarized white light (D65) color transmission difference (ΔEr) between the optical article and a control lens having a color tint that is comparable to a target tint for the optical article is less than 20; and
a perpendicularly-polarized white light (D65) color transmission difference (ΔEp) between the optical article and a control lens having a color tint that is comparable to a target tint for the optical article is greater than 30.