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Solar blind ultraviolet imaging background light suppression optical system and method

An ultraviolet imaging and optical system technology, which is applied in the field of weak optical signal detection, can solve the problems of long detection distance, high requirements for detector sensitivity and narrow-band transmittance of optical filter, weak discharge signal, etc., and achieves low background interference , The design of the instrument is reasonable, the effect of clear imaging

Inactive Publication Date: 2019-08-23
SUZHOU MICRONANO LASER PHOTON TECH CO LTD
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  • Application Information

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Problems solved by technology

However, the early discharge signal is often very weak, and the inspection of high-voltage lines requires a long detection distance, which has high requirements for the sensitivity of the detector and the narrow-band transmittance of the filter.

Method used

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  • Solar blind ultraviolet imaging background light suppression optical system and method
  • Solar blind ultraviolet imaging background light suppression optical system and method
  • Solar blind ultraviolet imaging background light suppression optical system and method

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Embodiment 1

[0020] Such as figure 1 As shown, a solar-blind ultraviolet imaging background light suppression optical system, the incident light is divided into the visible light imaging optical path and the ultraviolet light imaging optical path after being obliquely placed all-reflection full lens A1; the visible light imaging optical path is set in sequence: visible light imaging objective lens 2 , Visible light CCD3; UV light imaging light path is set in turn: filter lens group, total reflection full lens B7, ultraviolet imaging objective lens 8, solar blind filter 9, ultraviolet solar blind CCD10; visible light CCD and ultraviolet solar blind CCD transmit images to the image processing system 4; through the image processing system, the visible light image and the ultraviolet signal light are filtered and fused, and the image is displayed on the display screen 12 after being fused by the image processor 4; the filter lens group is sequentially filtered along the light propagation direct...

Embodiment 2

[0025] An optical method for suppressing background light in solar-blind ultraviolet imaging, in which incident light is divided into a visible light imaging optical path and an ultraviolet light imaging optical path after being obliquely placed with a total reflection full lens A; wherein the visible light imaging optical path is sequentially set as: a visible light imaging objective lens and a visible light CCD; The ultraviolet light imaging optical path is set in sequence: total reflection full lens B, ultraviolet imaging objective lens, ultraviolet solar blind CCD; visible light CCD, ultraviolet solar blind CCD transmits the image to the image processing system; the incident light passes through the total reflection full lens A placed obliquely After the visible light is transmitted, the visible light imaging optical path is set on this transmission optical path, and the visible light is imaged on the visible light CCD after passing through the visible light imaging objectiv...

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Abstract

The invention belongs to the field of weak optical signal detection, and provides a solar blind ultraviolet imaging background light suppression optical system and method for detecting weak ultraviolet signals under the condition of strong sunlight, improving the detection reliability and the measurement sensitivity. The incident light is divided into two paths by using a total reflection total lens A, a visible light imaging light path is arranged on a transmission light path, and the visible light is imaged on a visible light CCD after passing through a visible light imaging objective lens;ultraviolet light is reflected, an ultraviolet light imaging light path is arranged on a reflection light path, the ultraviolet light is incident to a total reflection total lens B, residual visible light in an ultraviolet light path is transmitted out of the ultraviolet light imaging light path from the total reflection total lens B, the ultraviolet light reflected by the total reflection total lens B is imaged on an ultraviolet solar blind CCD after passing through an ultraviolet imaging object lens, and pixel level fusion is carried out on ultraviolet channel signals through an image fusionsystem; and under the condition of larger background light intensity, the detection sensitivity of the solar blind signal is improved.

Description

technical field [0001] The invention relates to the field of weak optical signal detection, in particular to a method for detecting weak solar-blind ultraviolet signals. Using this method, weak solar-blind ultraviolet signals can be photographed at a long distance under strong background light conditions. Background technique [0002] With the increasing use of electricity by human beings, electric energy has become an indispensable part of daily life, which puts forward higher and higher requirements for electric energy supply, and uninterrupted power supply is also one of the important factors to measure the quality of electric energy. Therefore, the uninterrupted power detection of the power grid and the early detection of hidden defects in the power grid can reduce sudden accidents in the power grid. The use of imaging methods to detect power grid defects has the advantages of intuitiveness and easy judgment of fault points. At present, infrared imaging has been widely ...

Claims

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Application Information

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IPC IPC(8): G01R31/08G02B27/00
CPCG01R31/08G02B27/00
Inventor 杨勇宋瑛林储祥勇杨俊义
Owner SUZHOU MICRONANO LASER PHOTON TECH CO LTD
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