High-resolution large field of view continuous zoom camera lens and control method thereof

Abstract

The invention relates to the technical field of video shooting, and specifically relates to a high-resolution large-field-of-view continuous zoom pick-up lens and a control method thereof. The optical system of the lens is sequentially provided with a front fixed group A with positive focal power, a zoom group B with negative focal power, a compensation group C with positive focal power, a variable diaphragm assembly D, and a rear fixed group E with positive focal power along the incident direction of light. The lens is designed by using a mechanical compensation method and a steepest zoom cam curve design technology, has a focusing control function, a continuous zoom control function, an electric dimming function and an image output function, and can provide photoelectric signals for CCD or CMOS cameras with the target surface of 1'' in good weather and produce a high-definition video image. The lens has the advantages of long focal length, compact structure, high zoom ratio and the like, and has a larger observation field-of-view angle than an ordinary optical lens under the same focal length. The detection ability is improved significantly.

Description

technical field [0001] The invention relates to the field of video camera technology, in particular to a camera lens with high resolution and large field of view with continuous zoom and a control method thereof. Background technique [0002] The mechanically compensated zoom lens has been used in the field of video photography for decades. The traditional zoom lens generally has a contradiction between the detection distance and the search range. The focal length and the field of view are reflected in the zoom lens. Due to the contradiction of angles, conventional continuous zoom lenses generally do not have the characteristics of large field of view, long focal length, and high resolution at the same time. In addition, the existing zoom lens is limited by the external volume, resulting in a short observation distance, a small observation field of view, and poor image quality, which limits the observation ability. Contents of the invention [0003] In view of the deficie...

AI Technical Summary

Problems solved by technology

[0002] The mechanically compensated zoom lens has been used in the field of video photography for decades. The traditional zoom lens generally has a contradiction between the detection distance and the search range. The focal length and the field of view are reflected in the zoom lens. Because of the contradiction of angles, conventional continuous zoom lenses generally do not have the characteristics of large field of view, long focal length, and high resolution at the same time.

In addition, the existing zoom lens is limited by the shape and volume, resulting in a short observation distance, a small observation field of view, and poor image quality, which limits the observation ability

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