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:
Aug. 29, 2017
Filed:
Jul. 17, 2015
Carl Zeiss Vision Italia S.p.a., Castiglione Olona-Varese, IT;
Bernd Lingelbach, Abtsgmuend-Leinroden, DE;
Carl Zeiss Vision Italia S.P.A., Castiglione Olona-Varese, IT;
Abstract
An optical filter for eye glasses, in particular suitable for spectacle lenses or ski goggles, has a spectral power transmission curve of optical radiations. The spectral power transmission curve exhibits a local maximum spectral transmission (T) of radiations in a first wavelength range (Δλ). The first wavelength range (Δλ) is between 380 nm and 420 nm. The spectral power transmission curve exhibits spectral transmissions (T) of radiation in a second wavelength range (Δλ) which are lower than an upper threshold spectral transmission (T). The second wavelength range (Δλ) is between 420 nm and 500 nm and the upper threshold spectral transmission (T) is smaller than the maximum spectral transmission (T). The maximum spectral transmission (T) is larger than 21%.