公开(公告)号：US20220317346A1

公开(公告)日：2022-10-06

申请号：US17216969

申请日：2021-03-30

Applicant: META PLATFORMS TECHNOLOGIES, LLC

Inventor： Elliott Franke ,  Nihar Ranjan Mohanty ,  Vivek Gupta ,  Geraud Jean-Michel Dubois

IPC: G02B5/18

Abstract: A multilayer architecture includes an amorphous optical layer, a crystalline optical layer overlying the amorphous optical layer, and a barrier layer located between the amorphous optical layer and the crystalline optical layer. The barrier layer may be configured to mediate the structure of the later-formed amorphous optical layer. For instance, a low absorption barrier layer may be formed over the crystalline optical layer within the multilayer architecture and accordingly inhibit crystallization within a subsequently formed optical layer, thus providing phase separation between the neighboring optical layers and a desired refractive index gradient within the multilayer architecture without adversely affecting the optical path length therethrough. Such a multilayer structure may be configured as a light retention layer, antireflective coating, bandpass filter, etc.