OPTICAL MEMBER, IMAGING DEVICE, AND METHOD OF MANUFACTURING OPTICAL MEMBER

摘要

PROBLEM TO BE SOLVED: To provide an optical member in which ripples are suppressed and which has a porous glass layer on a substrate, and a method of manufacturing the same.

SOLUTION: An optical member includes a porous glass layer 2 disposed on a substrate 1. The porous glass layer 2 includes a first porous glass layer 21 whose porosity is constant and a second porous glass layer 22 whose porosity is larger than that of the first porous glass layer 21 and constant, in order from the substrate 1 side. A first base material glass layer having a phase separation property and a second base material glass layer are formed on the substrate 1. Each base material glass layer is subjected to phase separation and etching, and the first porous glass layer 21 and second porous glass layer 22 are formed on the substrate 1.

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