Optical system of color camera for digital aerial mapping

Abstract

The invention discloses an optical system of a color camera for digital aerial mapping. The optical system comprises a front lens group, a middle lens group and a rear lens group, wherein the front lens group comprises a first lens, a second lens and a third lens; the middle lens group comprises a fourth lens, a fifth lens, a diaphragm, a sixth lens and a seventh lens; the fourth lens and the fifth lens constitute a double-cemented lens; the rear lens group comprises an eighth lens; and the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the diaphragm, the sixth lens, the seventh lens and the eighth lens are coaxially arranged in sequence along a light incidence direction. The optical system is simple in structure while having a large imaging field of view, high resolution and low distortion performance, uses a small number of lenses, reasonably distributes the power of each lens, and corrects the primary and high-order aberrations in a combination manner,so that the imaging quality is excellent, the manufacturing cost of the optical system is greatly reduced and light and small design is realized.

Description

technical field [0001] The invention relates to the technical field of optical imaging, in particular to an optical system of a digital aerial surveying and mapping color camera. Background technique [0002] Aerial surveying and mapping cameras are mounted on airborne platforms, capable of imaging ground objects at long distances, providing high-resolution, low-distortion remote sensing image information, and are widely used in fields such as agriculture and forestry, emergency disaster reduction, and urban planning and construction. Especially in recent years, with the introduction of concepts such as "smart city" and "digital city" and the rapid development of digital cities, aerial surveying and mapping cameras can provide high-definition surveying and mapping images with large area arrays and high-resolution images with accurate positions Information can play an important role in emergency response, urban security, urban functions and spatial layout, water conservancy p...

AI Technical Summary

Problems solved by technology

However, the optical system is relatively complicated, using as many as 12 optical lens elements; in order to correct aberrations, a triplet lens with relatively complicated processing and assembly technology is used.

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