A compact wide-angle large zoom ratio high-definition zoom lens

Abstract

The invention relates to a compact wide-angle high-definition zoom lens with large zoom ratio. The lens includes a front fixed group A, a zoom group B, a compensation group C, a diaphragm D, and a rear fixed group E. The front fixed group A includes Biconvex lens A-1, negative meniscus lens A-2 and biconvex lens A-3 are in close contact with the first cemented group and positive meniscus lens A-4; the zoom group B includes biconvex lens B-1 and biconcave lens B-1 2. The second glued group of plano-concave lenses B-3 in close contact; the compensation group C includes the third glued group of double-convex lens C-1, negative meniscus lens C-2 and double-convex lens C-3; the rear fixed group E includes the fourth cemented group of biconcave lens E-1 and plano-convex lens E-2, biconvex lens E-3, negative meniscus lens E-4, plano-convex lens E-5, biconvex lens E-6 and biconvex lens E- 7 close-fitting fifth cemented group and bi-convex lens E-8. The lens of the present invention has a large field of view, a large zoom ratio, small size and light weight, is convenient to carry, improves the resolution level of the telephoto section, and can be adapted to a two-megapixel high-definition camera.

Description

technical field [0001] The invention relates to a compact wide-angle high-definition zoom lens with large zoom ratio. Background technique [0002] The improvement of the level of international scientific and technological confrontation has put forward higher requirements for airborne and vehicle-mounted detection systems, especially in terms of compactness, light weight, and high-definition image output. Panoramic search, as well as large-magnification magnification observation of small areas. Therefore, it is necessary to change the design idea and improve the design method on the basis of the traditional mechanical compensation zoom lens, so as to overcome the common problems of large volume, small zoom ratio, low resolution and poor image quality in the traditional four-component structure. The disadvantages enable it to match with high-definition cameras and enhance the ability to resist technology. Contents of the invention [0003] In view of this, the object of t...

AI Technical Summary

Problems solved by technology

Therefore, it is necessary to change the design idea and improve the design method on the basis of the traditional mechanical compensation zoom lens, so as to overcome the common problems of large volume, small zoom ratio, low resolution and poor image quality in the traditional four-component structure. Disadvantages, so that it can match with high-definition cameras and improve the ability of technological confrontation

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