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Optical system of a large field of view and low distortion aerial survey camera

An optical system and aerial survey camera technology, applied in the field of optical systems, can solve problems such as increasing system cost, achieve the effects of low price, ensure uniformity and reduce manufacturing cost

Active Publication Date: 2022-04-08
BEIJING RES INST OF SPATIAL MECHANICAL & ELECTRICAL TECH
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  • Claims
  • Application Information

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Problems solved by technology

The system contains a total of 14 lenses, but there are as many as 11 kinds of optical glass materials used, which increases the system cost

Method used

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  • Optical system of a large field of view and low distortion aerial survey camera
  • Optical system of a large field of view and low distortion aerial survey camera
  • Optical system of a large field of view and low distortion aerial survey camera

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Embodiment Construction

[0033] Such as Figure 1-3 As shown, the main performance indicators of the large-field-of-view low-distortion optical system of the present invention are:

[0034] 1. The working spectrum is 500nm-700nm;

[0035] 2. System focal length: 142mm;

[0036] 3. The field of view is 68°;

[0037] 4. The relative aperture is 5.6;

[0038] 5. Distortion is less than 0.005%;

[0039] 6. Quasi-image square telecentric design, the maximum incident angle outside the image plane axis is less than 20°;

[0040] 7. The total length of the optical system is 320mm;

[0041] 8. The back intercept length of the optical system is 67mm;

[0042] The optical system has minimal distortion and telecentricity are contradictory. Generally, the optical system of aerial survey cameras adopts a symmetrical structure. Although the field of view is large, the distortion can be corrected to a small value. The angle is equal, and the telecentricity of the optical system is very poor. Therefore, for a l...

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Abstract

The present invention is an optical system of a large-field-of-view low-distortion aerial survey camera, comprising a front group lens, a diaphragm and a rear group lens; the components of the front group lens and the rear group lens are arranged in sequence along the optical axis; the focal length of the front group lens is 100mm, and the rear group lens The focal length of the lens is ‑500. The optical system adopts quasi-image square telecentric design, and the maximum incident angle outside the image plane axis is less than 20°. The total length of the optical system is 320 mm; the back intercept length of the optical system is 67 mm. The invention has the characteristics of large field of view, high resolution, quasi-image square telecentricity, symmetrical structure, light and small size, and low cost.

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 spliced ​​large area array digital aerial survey camera. Background technique [0002] Large-format, large-field-of-view, and high-resolution area array cameras are an inevitable direction for the development of aerial survey cameras. At present, the internationally famous aerial survey cameras mainly include Leica's ADS40 / 80, Intergraph's DMC series, and MicrosoftVexcel's UltraCam series. However, limited by the technical bottleneck of a single large-format device and the high cost, only DMCII currently uses a single super-large area array CCD with a maximum resolution of 17k×14k. Other aerial survey cameras are mostly formed by combining multiple lenses and multiple detectors. large format. [0003] For a large area array aerial survey camera with multi-lens and multi-detector combination, the optical system...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B13/22G02B13/02G02B13/06G02B13/18G02B1/00
CPCG02B13/22G02B13/02G02B13/06G02B13/18G02B1/00
Inventor 曹桂丽刘秀林招荣张倩朱大凯张春宋立国袁胜帮钟灿刘芳芳
Owner BEIJING RES INST OF SPATIAL MECHANICAL & ELECTRICAL TECH
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