Wide-view-field long-focal-length high-resolution lens

Abstract

The invention discloses a wide-view-field long-focal-length high-resolution lens which comprises a front lens group and a rear lens group, wherein the front lens group and the rear lens group jointlyform seven lens groups including eight lenses, the front lens group is positive, and the rear lens group is negative. The wide-view-field long-focal-length high-resolution lens has ultrahigh image resolution, can obtain images of hundreds of millions of pixels, and is simple in structure, and the lens is small in number of lenses, free of aspheric surfaces, good in machinability and low in cost. In addition, the lens is provided with an external diaphragm, can be conveniently combined with other optical systems, is high in expandability, strictly corrects distortion, and can be used for high-resolution optical analogue simulation, high-definition optical imaging and the like.

Description

technical field [0001] The invention belongs to the field of optical systems, in particular to a wide field of view long focal length high resolution lens. Background technique [0002] In existing life, with the rapid development of modern large area array photoelectric imaging systems, the number of pixels of an image acquired by one exposure has broken through from one million pixels in the past to hundreds of millions of pixels, and image information with a large amount of information can be obtained. Ultra-high resolution imaging technology is widely used in high-definition photography, urban geographic information acquisition, large-scale environmental information monitoring, high-resolution remote sensing of UAVs to the ground, etc. Among them, the optical system is the resolution ability of the imaging system. key role. [0003] However, traditional optical systems mainly use Kirk or double Gaussian optical structures, such as Figure 7 As shown, the aperture is loc...

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Problems solved by technology

[0003] However, traditional optical systems mainly use Kirk or double Gaussian optical structures, such as Figure 7 As shown, the aperture is located in the center of the lens, or is distributed symmetrically, and is used to correct the field curvature and distortion of the optical system. Generally, after an optimized design, the imaging resolution can reach one million pixels, or it can be deformed by using a complex structure. If it is increased to tens of millions of pixels, if it is further improved, it will become very difficult or cause the lens structure to be extremely complicated due to the influence of the structure. In some high-resolution imaging systems, in order to compress the system size, the number of optical parts is reduced. , using a high-order aspheric surface to correct system aberrations. Although this technology can improve the imaging quality of the system, the aspheric surface is difficult to process and complex to assemble, making the cost of the optical system much higher than that of general systems.

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