抄録
The process how the surface shapes of optical glass and polisher change in pitch-polishing is presently studied by treating their surfaces as those of the second order of revolution. Experiments were carried out in two cases; one was for crude polisher by optical glass, the other for another optical glass by the polisher polished so. The results show that the process under the right polishing conditions has almost the same fundamental characteristics, common to both cases, asthose found in lapping, being analogeous to that in reciprocation lapping whichwas performed by combining different kinds of workpieces as lower and upper ones.