METAL MOLD FOR PRODUCTION OF ROTARY POLYHEDRAL MIRROR MADE OF SYNTHETIC RESIN AND APPARATUS FOR PRODUCING ROTARY POLYHEDRAL MIRROR MADE OF SYNTHETIC RESIN AS WELL AS PRODUCTION OF ROTARY POLYHEDRAL MIRROR MADE OF SYNTHETIC RESIN

摘要

PROBLEM TO BE SOLVED: To enable the uniform pressure distribution of reflection surfaces and to improve the flatness of the reflection surfaces and the flatnesses of the reflection surfaces and a mounting reference plane. SOLUTION: A compression core is divided to a mounting reference plane compression core 152 and a reflection surface compression core 153 which are respectively independently controlled. The external shape line 153' at the reflection surface compression core 153 is arranged the outer side than the virtual extension line 12' of the external shape line of the reflection surface 12 or near the outer side. A mirror finished surface liner 154 has a tapered part extending outward from the lower part of the reflection surface 12 and transmits the compressive force of the reflection surface compression core 153 to the reflection surface 12.