High magnification zoom camera lens suitable for image stabilization system

Abstract

The invention relates to a high magnification zoom camera lens suitable for an image stabilization system. A front fixing lens group A with positive focal power, a zoom lens group B with negative focal power, a compensating lens group C with positive focal power, an iris diaphragm assembly D, a back fixing lens group E with positive focal power, an image stabilization device reflector F, an image stabilization device lens group G and a reflector H are respectively arranged along light rays in the incidence direction from left to right. The high magnification zoom camera lens effectively improves lens distinguishability, can meet demands for being adaptive to a high definition camera, has strong vibration prevention capacity, can still obtain stable images under a long-focus condition under the circumstances of bumping, self-shaking and aerodynamic vibration, has a function of focal distance value presetting, and is especially suitable for continuous tracking an object in a long distance, and the system has the advantage of compact performance.

Description

technical field [0001] The invention relates to an optical camera device of video technology, in particular to a high-magnification zoom camera lens suitable for an image stabilization system. Background technique [0002] Although the mechanically compensated variable focal length lens has a history of decades, the basic optical path structure has not changed much. It is basically composed of four groups: the front fixed lens group, the zoom lens group, the compensation lens group and the rear fixed lens group. The element composition realizes the change of the effective imaging range through the mutual movement between the lens groups. The common problems are: the resolution is not high, especially when the external vibration is relatively large, such as bumps, self-jitter, aerodynamic vibration, etc., it is difficult to obtain a stable image at a long focal length, and even lose the tracking target; When the volume is limited, it is difficult to enlarge the zoom ratio an...

AI Technical Summary

Problems solved by technology

The common problems are: the resolution is not high, especially when the external vibration is relatively large, such as bumps, self-jitter, aerodynamic vibration, etc., it is difficult to obtain a stable image at a long focal length, and even lose the tracking target; When the volume is limited, the zoom ratio is difficult to enlarge, etc.

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