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:
Dec. 17, 2013
Filed:
Mar. 09, 2009
Volker Tautz, Wetzlar, DE;
Volker Tautz, Wetzlar, DE;
Carl Zeiss Sports Optics GmbH, Wetzlar, DE;
Abstract
An optical system for imaging an object on an image acquisition unit includes a first lens unit, a second lens unit, a third lens unit, a fourth lens unit, a fifth lens unit, and a sixth lens unit disposed from the object in the direction of the image acquisition unit. The second lens unit is manufactured from a material whose deviation of the relative partial dispersion fulfills the condition: Δθ>0.025. The third lens unit is manufactured from a material whose deviation of the relative partial dispersion fulfills the condition: Δθ<−0.0015. The fifth lens unit is manufactured from a material whose deviation of the relative partial dispersion fulfills the condition: Δθ<−0.005. According to the disclosed system, the secondary spectrum is reduced and a relative aperture is sufficient so that the optical system is usable in a telescopic sight.