US 12,442,971 B2
Optical devices
Johannes Seydel, Petaluma, CA (US); Mark Tevis, Novato, CA (US); Kangning Liang, Santa Rosa, CA (US); Jaroslaw Zieba, Santa Rosa, CA (US); Paul Thomas Kohlmann, Windsor, CA (US); and Jeffrey James Kuna, San Francisco, CA (US)
Assigned to VIAVI SOLUTIONS INC., Chandler, AZ (US)
Filed by VIAVI SOLUTIONS INC., San Jose, CA (US)
Filed on Dec. 15, 2020, as Appl. No. 17/122,646.
Application 17/122,646 is a continuation of application No. 15/633,576, filed on Jun. 26, 2017, granted, now 10,928,579.
Claims priority of provisional application 62/355,131, filed on Jun. 27, 2016.
Prior Publication US 2021/0141144 A1, May 13, 2021
Int. Cl. F21V 8/00 (2006.01); C09C 1/00 (2006.01); G02B 6/293 (2006.01)
CPC G02B 6/0055 (2013.01) [C09C 1/0015 (2013.01); G02B 6/0053 (2013.01); G02B 6/29337 (2013.01); C09C 2200/1054 (2013.01); G02B 6/0051 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A method for manufacturing a sheet comprising:
depositing on a substrate a first selective light modulator layer;
depositing on the first selective light modulator layer at least one reflector;
depositing on the at least one reflector a second selective light modulator layer, the sheet comprising the first selective light modulator layer, the at least one reflector and the second selective light modulator layer; and
releasing the substrate from the sheet,
wherein at least one layer chosen from the first selective light modulator layer and the second selective light modulator layer is deposited as a wet film comprising a solvent using a liquid coating process,
wherein the method further comprises: evaporating the solvent from the wet film, wherein after evaporation of the solvent the at least one layer remains a liquid having a second viscosity that is greater than the first viscosity and exhibits a pseudoplastic behavior that allows self-leveling of the at least one layer; and subsequent to evaporation of the solvent but prior to the releasing the substrate from the sheet, curing the at least one layer to form a self-leveled, cured selective light modulator layer.