US 11,934,046 B2
Laser protection eyewear lenses
Nicholas V. Perricone, Meriden, CT (US); and Kristin A. Rauschenbach, Franconia, NH (US)
Assigned to PerriQuest Defense Research Enterprises, LLC, Meriden, CT (US)
Filed by PerriQuest Defense Research Enterprises, LLC, Meriden, CT (US)
Filed on Apr. 10, 2023, as Appl. No. 18/298,300.
Application 18/298,300 is a continuation of application No. 17/141,552, filed on Jan. 5, 2021, granted, now 11,644,690.
Application 17/141,552 is a continuation of application No. 15/411,573, filed on Jan. 20, 2017, granted, now 10,895,761, issued on Jan. 19, 2021.
Claims priority of provisional application 62/289,840, filed on Feb. 1, 2016.
Prior Publication US 2023/0251507 A1, Aug. 10, 2023
Int. Cl. G02C 7/10 (2006.01); A61F 9/02 (2006.01); G02B 1/04 (2006.01); G02B 1/11 (2015.01); G02B 1/14 (2015.01); G02B 5/28 (2006.01)
CPC G02C 7/107 (2013.01) [A61F 9/02 (2013.01); A61F 9/022 (2013.01); G02B 1/11 (2013.01); G02B 1/14 (2015.01); G02B 5/288 (2013.01); G02C 7/104 (2013.01); G02B 1/041 (2013.01); G02C 2202/16 (2013.01)] 21 Claims
OG exemplary drawing
 
1. A laser protection eyewear lens comprising:
a) a lens substrate comprising an embedded wavelength filter having a first filter function comprising a shape that reduces transmission for at least one wavelength of the spectrum while passing other wavelengths of the spectrum; and
b) a multi-layer dielectric filter applied to at least one of an inside and an outside surface of the lens substrate, the multilayer dielectric filter comprising a second filter function comprising a notch filter function having a high-reflectance spectral region comprising at least one center wavelength and bandwidth,
wherein the first filter function of the embedded wavelength filter and the second filter function of the multilayer dielectric filter produce a combined filter function that reflects laser light having wavelengths falling within the high-reflectance spectral region from the outside surface of the lens substrate and also reduces back reflection from the inside surface of the lens substrate for at least some wavelengths falling within the high-reflectance spectral region.