STRUCTURAL BODY FOR ABSORBING LIGHT, MEMBER, OPTICAL APPARATUS, AND METHOD OF MANUFACTURING STRUCTURAL BODY

Abstract: a technology advantageous for achieving a structural body capable of sufficiently absorbing light, provided is a structural body for absorbing light, which is incident on the structural body and has a wavelength �, the structural body including a substrate having a plurality of concave surfaces on a light incident surface. the light is incident on an inner region of each of the plurality of concave surfaces. the light satisfies 400 nm≤�≤40 �m. each of the plurality of concave surfaces satisfies dd≥da>db>�, wa>�, and wb≤�/2, where dd represents a depth of a bottom of the each of the plurality of concave surfaces, wa represents a width of the inner region at a position of a distance da from the bottom of the each of the plurality of concave surfaces, and wb represents a width of the inner region at a position of a distance db from the bottom.

Inventor(s): HARUKA SASAKI, YASUYUKI SUZUKI, HIROYUKI MORIMOTO, KOSUKE KURACHI

CPC Classification: G02B5/003 (Optical elements other than lenses (light guides ; optical logic elements ))

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