The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 09, 2023
Filed:
Feb. 11, 2019
Essilor International, Charenton-le-Pont, FR;
Coralie Barrau, Charenton-le-Pont, FR;
Montserrat Burgos, Charenton-le-Pont, FR;
Natalia Schianchi, Italia, IT;
Essilor International, Charenton-le-Pont, FR;
Abstract
An ophthalmic tinted lens has a visual transmission value TV for quantifying a first light intensity ratio which relates to light effective for human vision and transmitted through the lens in daylight condition, and also has a value of a chronobiological factor FC for quantifying a second light amount ratio which relates to light effective for a non-visual physiological effect and also transmitted through the lens in daylight condition. The TV-value and the FC-value expressed as percentage values meet the following condition: FC>1.1×TV+13.0 with 3%≤TV≤43%, or FC>0.7×TV+32 with 43%<TV≤92%, for the ophthalmic tinted lens to combine solar protection and maintenance of circadian rhythms and better pupil constriction which are based on the non-visual physiological effect.