OPTICAL ELEMENT AND METHOD FOR MANUFACTURING IMAGE FORMING ELEMENT

摘要

A method for manufacturing an optical element 1 comprises: a stacking step for stacking glass plates 3, which are a plurality of transparent plates each provided with a reflection plane 2 on at least one principal surface 3a, in a direction perpendicular to the reflection plane 2 to thereby form a stacked block 6; a pressurization step for applying pressure in a direction perpendicular to the reflection planes 2 of the stacked block 6; and a cutting step for cutting the pressurized stacked block 6 in a direction crossing the reflection planes 2 to thereby form the flat plate shaped optical element 1 in which the reflection planes 2 parallel to a thickness direction are disposed parallel to each other at predetermined intervals. The principal surface 3a of the glass plate 3 is an unflattened surface.