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:
Oct. 15, 1991
Filed:
Feb. 13, 1990
Applicant:
Inventors:
Gerd Rieche, Jena, DD;
Gerhard Risch, Weimar, DD;
Assignee:
Jenoptik Jena G.m.b.H., Jena, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B / ;
U.S. Cl.
CPC ...
359737 ; 359754 ;
Abstract
A wide-angle objective for a picture-taking lens of an aerial mapping camera, consisting of 11 lenses and 14 glass-air surfaces, the first optical element of which after the center aperture on the picture side is a converging fluorspar or fluorspar-like lens. Due to the large refractive index difference between this lens and the following meniscus lens and due to the provision of a triple group of high refractive index on the object side before the center aperture, a high resolution, low residual distortion and minimal lateral chromatic aberration are achieved.