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, 2022
Filed:
Apr. 20, 2018
Leica Microsystems Cms Gmbh, Wetzlar, DE;
Christian Schulz, Solms, DE;
LEICA MICROSYSTEMS CMS GMBH, Wetzlar, DE;
Abstract
The invention relates to a correction objective (), comprising a first lens group () of positive optical power, a second lens group () of positive optical power, a third lens group () of negative optical power, and a fourth lens group () of positive optical power, which are arranged in this order from the object side, the second lens group () being movable along the optical axis (O) in such a way that the sum of the distance (V) between the second lens group () and the first lens group () and the distance (V) between the second lens group () and the third lens group () is constant. The image scale of the second lens group () lies in a range of −0.9 to −1.1.