PRECISION OPTICAL FILTER WITH A BALL-END JOINT

摘要

A portion of an optical device is disclosed. In one aspect of the present invention, the device comprisess a cylinder formed about an axis having first and second ends, the second end being formed so as to define a segment of an inward-facing concave spherical surface. A module is provided defining a cylinder formed about the axis and having first and second ends and an optical element disposed therein about the axis. The first end of the module is formed so as define a segment of an outward-facing convex spherical surface, and the convex surface is complimentary in shape to the concave surface. The complimentary concave and convex surfaces of the cylinder and the module are mated so as to allow the optical element to be aligned about a plane forming a predetermined angle with the axis.