Hollow integrator for homogenizing light beams in projector comprises one-piece, hollow molding made from heavy-duty ceramic and silvered on its internal surface

摘要

Hollow integrator for homogenizing light beams in a projector comprises a one-piece, hollow molding made from heavy-duty ceramic and silvered on its internal surface. An Independent claim is included for a method for making the integrator using a mold corresponding to the external shape of the integrator. A core is placed in this to produce the light channel and the integrator is then injection molded, after which it is tempered and silvered.