Large-view-field high-resolution high-rate vehicle-mounted zoom pick-up lens

Abstract

The invention relates to a large-view-field high-resolution high-rate vehicle-mounted zoom pick-up lens. A front fixing group, a zooming group, a compensating group, a variable diaphragm assembly and a rear fixing group are respectively arranged along the left-to-right incidence direction of light rays, the focal power of the front fixing group is positive, the focal power of the zooming group is negative, the focal power of the compensating group is negative, and the focal power of the rear fixing group is positive; the front fixing group is provided with a first adhering group, a positive crescent-moon lens and another positive crescent-moon lens sequentially, and the adhering group is formed by closely connecting a negative crescent-moon lens and a double-convex lens; the zooming group is provided with a negative crescent-moon lens and a second adhering group sequentially, and the adhering group is formed by closely connecting a double-concave lens and a double-convex lens; the compensating group is provided with a third adhering group formed by closely connecting a double-concave lens and a double-convex lens; and the front part of the rear fixing group is provided with a plano-convex lens and a double-convex lens sequentially, the middle part of the rear fixing group is provided with a fourth adhering group and a positive crescent-moon lens sequentially, the adhering group is formed by closely connecting a double-convex lens and a double-concave lens, and the rear part of the rear fixing group is provided with a fifth adhering group formed by closely connecting a negative crescent-moon lens and a double-convex lens. The large-view-field high-resolution high-rate vehicle-mounted zoom pick-up lens disclosed by the invention has the advantages of large view field, high variable rate and high resolution, and can match a high-precision camera and the like.

Description

technical field [0001] The invention relates to an optical camera device of video technology, in particular to an airborne zoom camera lens with a large field of view, high resolution and large magnification ratio. Background technique [0002] Mechanically compensated variable focal length lenses have been used in the field of video photography for decades. The traditional optical system is composed of four components: front fixed group, zoom group, compensation group and rear fixed group; but they There are generally disadvantages such as large volume, small observation field, small zoom ratio, low resolution, and inability to adapt to high-precision cameras. Contents of the invention [0003] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a large field of view, high resolution and large ratio airborne zoom camera lens; It is limited by weight and volume, resulting in defects such as small observation field, small zoom r...

AI Technical Summary

Problems solved by technology

[0003] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a large field of view, high resolution and large ratio airborne zoom camera lens; It is limited by weight and volume, resulting in defects such as small observation field, small zoom ratio, low image contrast and definition, which seriously affect the detection ability of the system.

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