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:
Mar. 01, 2016
Filed:
Nov. 24, 2014
Spencer D. Luster, Toledo, OH (US);
Spencer D. Luster, Toledo, OH (US);
Other;
Abstract
An imaging hypercentric lens assembly comprising of a First Lens Group that includes: 1) At least a first high NA (0.40 or greater) aspheric lens element followed by 2) at least a second lens element that converges the light emitted from the first element to a small spot. It is further comprised of a Second Lens Group whose entrance pupil is placed at the same position as said small light spot. The Second Lens Group serves to refocus the light and form an image of an object placed in front of the First Lens Group. In this combination, the present invention allows high NA aspheric lens elements to produce good quality images of objects whose size is not limited to being considerably smaller than the diameter of the clear aperture of the high NA aspheric lens element.