Abstract

Optical tests were made on six paraboloidal metal electroplated replica mirrors of 3″ diameter and 2″ focal length, produced from convex glass masters. It was shown that the better replicas reproduced the features of the master surfaces with an average error of 5 or 6 microns per cm along the surface. Three of the replicas gave noticeably distorted images of a point source because of warping, introduced presumably in the process of separating them from the masters after electroplating.

© 1947 Optical Society of America

Full Article  |  PDF Article

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (2)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription