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:
Apr. 06, 2004
Filed:
Mar. 31, 2003
Uwe Weber, Aalen, DE;
Carl-Zeiss-Stiftung, Heidenheim, DE;
Abstract
An objective for a movie camera for digital cinematography comprises a cylindrical main barrel with a bayonet or K mount, an inner tube, fixed optical elements, adjustable optical sliding elements and drive rings with scales for adjusting the optical sliding elements that are mounted rotatably in the axial direction on the main barrel. The objective also comprises an iris diaphragm with a diaphragm ring rotating on the main barrel, an internal focusing system and a back focus correction device. The inner tube is mounted on the main barrel in a fashion displaceable along the optical axis for the purpose of back focus correction by means of the back focus correction device. The fixed optical elements, the iris diaphragm and sliding holders for holding the adjustable optical sliding elements are inserted into the inner tube.