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:
May. 21, 1996
Filed:
Nov. 12, 1993
Applicant:
Inventors:
Timothy L Hoopman, River Falls, WI (US);
David J Aastuen, Farmington, MN (US);
Assignee:
Minnesota Mining and Manufacturing Company, St. Paul, MN (US);
Primary Examiner:
Int. Cl.
CPC ...
G02B / ; G02B / ;
U.S. Cl.
CPC ...
359741 ; 359619 ; 359620 ; 359625 ; 359628 ;
Abstract
A microlens array and mold for making same in which the perimeter of each microlens is a modified polygon in that each edge of the lens approximates an elliptical arc, the ends of which terminate at the corners of the polygon, wherein the middle of the arc curves toward the center of each microlens. The microlenses are preferably rectangular or triangular.