Patent ID: 9551814
Date: 2017-01-24
CPC Classifications: B29C,B29D,B29L,G02B

Claim:
1. An optical layer stack of curable material, comprising: a first pair of optically relevant surfaces connected in series in layer thickness direction; at least a first cavity between the optically relevant surfaces fluidically connected to the outside world; at least one further cavity connected between a second pair of the optically relevant surfaces and fluidically connected to the first cavity; a first boundary surface between two different curable materials comprising different refractive indices, so that the boundary surface and the first pair of optically relevant surfaces are connected in series in layer thickness direction; and a second boundary surface between two different curable materials comprising different refractive indices, so that the boundary surface and the second pair of optically relevant surfaces are connected in series in layer thickness direction; wherein the at least first cavity is formed between the first and second boundary surface.