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:
Oct. 26, 1982
Filed:
Jul. 14, 1980
Herbert J Nevyas, Narberth, PA (US);
Alan C Traub, Framingham, MA (US);
Diversitronics, Inc., Broomall, PA (US);
Abstract
In an optical beam-doubling and image-rotating device, beam splitting means are provided for creating a first and a second image of an optical target in conjunction with means for rotating the light-ray family associated with the second image yielding a second image which has been rotated axially through a defined angle with respect to the first image, in further conjunction with additional beam splitting means so disposed as to combine the first and rotated second images so that they may be visually compared under the conditions of a specifically defined relative angular displacement. The disclosed use is in measuring the sphericity of the cornea of the eye during ophthalmic surgery.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile