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Multispectral Image Acquisition System

An image acquisition system and multi-spectral technology, applied in the field of image acquisition systems, can solve the problems of inability to implement multi-spectral imaging systems, inability to detect heat source positions sensitively, and implementation difficulties, so as to increase versatility, reduce volume, and save costs Effect

Active Publication Date: 2016-07-06
NANJING UNIV 5D TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the near-infrared band of 0.76-1.0 μm and the ultraviolet band of 0.30-0.38 μm often cannot meet the actual needs when imaging, because the imaging of the near-infrared band cannot detect the position of the heat source sensitively.
And the 0.30-0.38μm ultraviolet imaging is greatly affected by the sun background, which is not conducive to use in the case of strong sunlight during the day, while solar-blind ultraviolet band imaging can overcome these shortcomings
Therefore, the structure described in this system cannot realize a multi-spectral imaging system in the sun-blind ultraviolet band, visible light band and thermal infrared band, and all its components need to be designed by ourselves, which is not only difficult to implement but also expensive

Method used

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Embodiment 1

[0032] figure 1 Shown is a solar-blind ultraviolet, thermal infrared and visible multispectral imaging system of the present invention. In order to reduce the volume of the system and improve the coaxial precision, the multi-spectral segments of the present invention share the same lens group, and the beam splitter is used to make the target beams enter each imaging device respectively. The use of this three-channel optical path not only lowers the cost, but also produces images without parallax, which is convenient for subsequent image synthesis. The imaging bands of each imaging module are as follows: thermal infrared band: 7.5μm-14μm; solar-blind ultraviolet band: 190nm-285nm; visible light band: 400nm-700nm.

[0033] like figure 1 As shown, the multi-spectral image acquisition system is composed of a first beam splitter 1, a second beam splitter 2, a mirror 3, a thermal infrared band imaging system 4, a sun-blind ultraviolet band imaging system 5 and a visible light band i...

Embodiment 2

[0042] Example 2: Figure 4 Shown is another solar-blind multispectral imaging system of ultraviolet, thermal infrared and visible light according to the present invention.

[0043] In order to reduce the volume of the system, improve the coaxial precision, and reduce the product cost, this embodiment still shares the same lens group. The imaging bands of the imaging modules in this embodiment are as follows: thermal infrared band: 7.5 μm-14 μm; solar-blind ultraviolet band: 190 nm-285 nm; visible light band: 400 nm-700 nm.

[0044] Figure 4 The multispectral image acquisition system shown mainly includes the following components: a first spectroscope 1 , a second spectroscope 2 , a thermal infrared imaging system 4 , an optical lens 7 , a solar-blind ultraviolet imaging system 5 and a visible light imaging system 6 .

[0045] After the target beam passes through the first beam splitter 1 , part of it is transmitted into the thermal infrared imaging system 4 , and part of...

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Abstract

A multi-spectrum image acquisition system, including a first spectroscope, a second spectroscope, a thermal infrared band imaging system, a sun-blind ultraviolet band imaging system and a visible light band imaging system, the imaging band of the thermal infrared band imaging system is 7.5 μm— 14 μm, the imaging band of the sun-blind ultraviolet band imaging system is 190nm-285nm, and the imaging band of the visible light band imaging system is 400nm-700nm; the first beam splitter is placed at an angle of 45° with the optical axis, and the target The light with a wavelength of 7.5 μm-14 μm in the light beam is transmitted to the thermal infrared band imaging system, and the part of the target beam containing the light signals of the sun-blind ultraviolet band and the visible light band is reflected into the second beam splitter; the first The second beam splitter is parallel to the first beam splitter, and the second beam splitter transmits or reflects the visible light with a wavelength of 400nm-700nm in the remaining part of the target beam to the visible light band imaging system, and transmits the light beam with a wavelength of 190nm-285nm Blind UV light reflection or transmission to solar-blind UV band imaging system.

Description

technical field [0001] The invention relates to an image acquisition system, in particular to a multi-spectrum image acquisition system based on solar-blind ultraviolet, thermal infrared and visible light / twilight light. Background technique [0002] At present, monitoring work in many fields is based on optical means. Based on optical means, it can detect a wide range of wavelengths from ultraviolet to visible light to infrared bands, which can be used to monitor a variety of problems. [0003] Single-wavelength imaging technologies in the prior art, such as visible light imaging technology, low-light imaging technology, thermal infrared imaging technology, solar-blind ultraviolet imaging technology, etc., have their own special application directions and have irreplaceable advantages of other imaging methods. Among them, solar-blind ultraviolet imaging technology, as an emerging high-tech technology, can image solar-blind ultraviolet light with a wavelength range of 190nm...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B27/10G02B27/00G01J3/28
Inventor 李想孔夏丽朱曦
Owner NANJING UNIV 5D TECH
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