Scale of photoelectric encoder including base member having roughened surface and manufacturing method of scale

摘要

A scale of a photoelectric encoder includes a base member and gratings on the base member. The gratings can be formed on the surface of the base member by plating and arranged at a prescribed pitch on the base member. The surface of the base member is a roughened surface which is roughened by sandblasting or with a chemical. The gratings are light absorptive gratings or light reflective metal gratings.

主权项

1. A scale of a photoelectric encoder comprising:
a base member having a surface, a whole area of which is roughened; and gratings which are formed on the roughened surface of the base member by plating and arranged at a prescribed pitch on the base member, wherein the gratings are light absorptive gratings or light reflective metal gratings, and the whole area of the surface of the base member is roughened to increase adhesion of the gratings to the base member.