Optical system
AssigneeCarl Zeiss Sports Optics GmbH
InventorVolker Tautz
Life of this patent
Estimating the term…
Abstract
An optical system for imaging an object on an image acquisition unit has a variable focal length for zooming. The optical system has precisely three lens units from the object in the direction of an image acquisition unit, namely a first lens unit, a second lens unit, and a third lens unit. The second lens unit and the third lens unit are movably situated along an optical axis of the optical system for a change of the focal length. The first lens unit includes a first lens group and a second lens group. The first lens group of the first lens unit is fixedly situated on the optical axis of the optical system. The second lens group of the first lens unit is movably situated along the optical axis of the optical system for focusing. The second lens group includes at least two lenses.
Claims20
An optical system for imaging an object on an image acquisition unit, comprising:
- three lens units disposed from the object in the direction of the image acquisition unit, namely a first lens unit, a second lens unit, and a third lens unit,
- wherein the second lens unit and the third lens unit are movably situated along an optical axis of the optical system for zooming,
- wherein the first lens unit includes a first lens group and a second lens group, the first lens group of the first lens unit being fixedly situated on the optical axis of the optical system, and the second lens group of the first lens unit being movably situated along the optical axis of the optical system for focusing, and
- wherein the second lens group includes at least two lenses.
A telescope, comprising:
- at least one image acquisition unit;
- and
- an objective that is implemented as an optical system, the optical system including:
- three lens units disposed from an object in the direction of the at least one image acquisition unit, namely a first lens unit, a second lens unit, and a third lens unit,
- wherein the second lens unit and the third lens unit are movably situated along an optical axis of the optical system for zooming,
- wherein the first lens unit includes a first lens group and a second lens group, the first lens group of the first lens unit being fixedly situated on the optical axis of the optical system, and the second lens group of the first lens unit being movably situated along the optical axis of the optical system for focusing, and
- wherein the second lens group includes at least two lenses.
Dependencies are inferred from the claim text.