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:
Jul. 02, 1985
Filed:
Aug. 16, 1982
Richard W Newman, Auburn, NY (US);
William C Moore, Skaneateles, NY (US);
Byron A Richards, Skaneateles, NY (US);
Welch Allyn Inc., Skaneateles, NY (US);
Abstract
An optical system for illuminated viewing instruments comprising a light source lamp having an arcuate filament and a coacting mirror having an arcuate viewing passage in its upper edge. The optics of the system operate to focus the image of the filament on the mirror in concentric relation to the arcuate viewing passage whereby the axis of the reflected filament light and the viewer's line of sight are nearly coincident. In order to have all of the curved filament in focus on the mirror, the filament is tilted or disposed at an oblique angle to the longitudinal axis of the lamp. The optical system of the invention also permits use of a fixation pattern and provides the means for precisely focusing the pattern on the fundus of the patient's eye.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile