The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 02, 1988
Filed:
Dec. 10, 1986
Charles M Darcangelo, Corning, NY (US);
Robert M Hujar, Painted Post, NY (US);
Paul S Schmitt, Corning, NY (US);
Harold G Shafer, Jr, Rock Stream, NY (US);
Corning Glass Works, Corning, NY (US);
Abstract
An optical surface on a glass preform for an optical lens is simultaneously ground and polished. A glass blank is rotated by a work spindle mounted in an air bearing. A resin bonded diamond cutting ring is rotated by a tool spindle mounted in an air bearing. The axis of the tool spindle is set at an angle with respect to the axis of the work spindle with the edge of the cutting ring being centered on the axis of rotation of the blank. One of the spindles is moved linearly with respect to the other to move the cutting ring into engagement with the blank for grinding a precisely shaped, polished optical surface thereon. The spindles are mounted on a table and a driving motor for the linear drive is remote from the table to isolate the spindles from the vibration of the motor.