Asahi Glass Company, Limited

Katsushi Miyake

Masahiro Mori

Mitsuo Osawa

Mitsuyuki Tatemura

Katsushi Kamijyo

An optical member has: a transparent substrate; and a dielectric multilayer on the transparent substrate formed by stacking a plurality of unit refractive index layers each formed of a high-refractive index layer having a refractive index of 2 or more and a low-refractive index layer having a refractive index of 1.6 or less. In the optical member, a total number of the unit refractive index layers is 15 or more, and a number of the unit refractive index layers satisfying a condition of nd/nd&#x2267;3 is 10 or more, ndrepresents an optical thickness of the high-refractive index layer, and ndrepresents an optical thickness of the low-refractive index layer.

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Tokyo, Japan

Katsushi Miyake