Method of manufacturing optical component and optical component

摘要

To easily bond substrates even made of materials whose linear expansion coefficients are different from each other when manufacturing an optical component used by transmitting light through an inside thereof. Buffer layers made of an amorphous inorganic substance causing a brittle fracture are formed on bonding surfaces of a plurality of substrates having linear expansion coefficients different from one another, and the substrates to be bonded are stacked so that the buffer layers are faced to each other. Then, a heat treatment is performed for a stack, and thereby direct bonding via an atom is formed between the buffer layers.