Positioning method of optical element, positioning member of optical element and optical unit, and manufacturing method thereof

摘要

The lateral V-shaped groove 2 and the longitudinal V-shaped groove 3, which cross each other, are formed on a surface of the substrate 1. When the optical element 100 is contacted with and supported by four ridges composed of sides 21, 22 of one V-shaped groove and sides 31, 32 of the other V-shaped groove, the optical element is positioned at the three-dimensional support position which is geometrically determined by the four points at which the four ridges and the surface of the optical element come into contact with each other.