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. 04, 2014
Filed:
Jun. 27, 2013
Applicant:
Leica Camera Ag, Solms, DE;
Inventors:
Stefan Roth, SchlĂĽchtern, DE;
Peter Karbe, Leun, DE;
Assignee:
Leica Camera AG, Solms, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 13/04 (2006.01); G02B 13/18 (2006.01);
U.S. Cl.
CPC ...
Abstract
What is described is a modified retrofocus-type wide-angle lens, with, as seen from the object, a front group (G) with negative refractive power, a first rear group (Gh) with positive refractive power displaceable along the optical axis for focusing purposes and a second rear group (Gh) with positive refractive power facing an image plane.