Optical system of large-visual-field high-resolution three-linear-array stereo aerial surveying camera

Abstract

The invention provides an optical system of a large-visual-field high-resolution three-linear-array stereo aerial surveying camera. The optical system comprises a first negative lens, a first correcting lens, a second positive lens, a second negative lens, a cemented doublet lens, a third positive lens, a diaphragm, a fourth positive lens, a cemented triple lens, a third negative lens, a fifth positive lens and a sixth positive lens. The bending direction of the first correcting lens deviates from the diaphragm, the first correcting lens is crescent-shaped, the cemented face of the cemented doublet lens deviates from the diaphragm, and the cemented triple lens is of a negative lens-positive lens-negative lens structure. The optical system of the large-visual-field high-resolution three-linear-array stereo aerial surveying camera has the advantages of being large in visual field, high in resolution, ultra-low in distortion, telecentric in accurate image space and the like.

Description

technical field [0001] The invention belongs to the technical field of aerial remote sensing and surveying and mapping, and relates to an optical system applied to a new optical load of aerial earth observation. Background technique [0002] The three-line array stereoscopic aerial survey camera is installed on the aircraft platform. Through the push-broom of the aircraft, three linear array detectors on the focal plane are used to obtain the front-view, down-view, and rear-view images of the same ground object, and finally the three-dimensional ground object is obtained by using image processing technology. digital imaging. [0003] As a hotspot in foreign research, the three-line array stereoscopic aerial survey digital camera has always attracted the attention of all parties. There are also two ways of its technical realization, namely, the single-lens internal splicing form and the three-lens external splicing form. Representatives of single-lens internal stitching tech...

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Problems solved by technology

[0011] At present, the three-dimensional aerial camera for linear array detectors is still blank in China. The three-line array three-dimensional aerial camera system needs a large field of view, high resolution, and high-precision optical system, which has high requirements for use and great technical difficulties. There is no such optical system in China

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