Accession Number : AD0812642

Title :   DEVELOPMENT OF PRODUCTION METHODS FOR GENERATING ASPHERIC LENS SURFACES. VOLUME II.

Descriptive Note : Final rept. Jul 58-31 Mar 66,

Corporate Author : BELL AND HOWELL CO CHICAGO IL

Personal Author(s) : Van Ornum, Wesley H. ; Bushman, Stephen F.

Report Date : MAR 1967

Pagination or Media Count : 80

Abstract : The objective of this program was to develop a production method for manufacturing precision aspheric lens surfaces, in reasonable quantities and at a reasonable cost, without recourse to highly skilled craftmanship. An investigation of several possible production methods and techniques culminated in the decision that the problem could best be solved with an electrically-controlled cutting machine which combined precision with flexibility and repeatability. Because of the critical tolerances involved, such a cutting machine must, of necessity, be an extremely accurate measuring device as well.

Descriptors :   (*ASPHERICAL LENSES, MANUFACTURING), (*MILLING MACHINES, ASPHERICAL LENSES), (*CONTROL SEQUENCES, AUTOMATION), DIAMOND WHEELS, DIGITAL COMPUTERS, CONTROL SYSTEMS, PUNCHED CARDS.

Subject Categories : Mfg & Industrial Eng & Control of Product Sys

Distribution Statement : APPROVED FOR PUBLIC RELEASE