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US 2003/0189691 A1Published application
Objective for a movie camera
AssigneeCarl-Zeiss-Stiftung
InventorUwe Weber
Life of this patent
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AssigneeCarl-Zeiss-Stiftung
InventorUwe Weber
Estimating the term…
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.
An objective for a movie camera for digital cinematography, comprising:
A set of objectives as claimed in one of claims 1 to 15, wherein the arrangement of said optical elements in the sequence of fixed front element, sliding holders with associated adjustable optical sliding elements, fixed intermediate element, iris diaphragm and fixed rear element is constant, the focusing mounts of the respective objectives differing from one another only in the external lettering or engraving and in the pitches of the respective motion-transmitting threads of the internal focusing devices, and/or in the focal lengths of the objectives.
Dependencies are inferred from the claim text.