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:
Nov. 03, 1992
Filed:
Feb. 15, 1991
Applicant:
Inventor:
Walter Watz, Huettenberg-Reiskirchen, DE;
Assignee:
Leica Camera GmbH, Wetzlar, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B / ;
U.S. Cl.
CPC ...
359642 ; 359765 ;
Abstract
A camera lens with a relative aperture of 1:1.4 and a focal length of 35 mm has five components. The first component includes a cemented element which is concave on the object side. The second component includes a cemented element which has an aspherical convex surface on the object side. The third component serves as an individual lens. The fourth component includes a cemented element which is concave on the object side. The fifth component has a cemented element which includes a concave surface on the image side and an aspherical convex surface on the object side.