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Method and device for measuring intensity of UV.

An intensity detection and ultraviolet technology, applied in measuring devices, photometry, optical radiation measurement, etc., can solve problems such as the reduction of ultraviolet light detection sensitivity, and achieve the effect of less interference of visible light radiation in the environment, easy to carry, and low cost.

Inactive Publication Date: 2007-07-18
SOUTH CHINA NORMAL UNIVERSITY
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Problems solved by technology

Therefore, filter glass is often added in front of it, which will cause a decrease in the sensitivity of ultraviolet light detection

Method used

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  • Method and device for measuring intensity of UV.
  • Method and device for measuring intensity of UV.

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Embodiment Construction

[0043] As shown in Figures 1 and 2, after the light containing ultraviolet light passes through the filter collimation device composed of two-stage rectangular diaphragms arranged in parallel in front and rear lines, a beam of quasi-parallel light in a single direction is incident on the reflection grating, and the reflected diffraction The light appears in a spectral band from ultraviolet, visible light to infrared light. Place a slit or optical filter with variable slit width at an appropriate position, the light transmission direction of the slit is parallel to the direction of the spectral line, filter out unnecessary visible light and infrared light, select the corresponding ultraviolet light, and then pass through the coating After the transparent substrate with ultraviolet fluorescent material, it is detected by photodetectors such as ordinary photocells or photodiodes. After the output of the photodetector passes through the amplification circuit and AD conversion circu...

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Abstract

The invention relates to ultraviolet ray intensity detecting method and device. The method includes the following steps: collimating ultraviolet ray containing light by two rectangular diaphragms to form one way right parallel ray and reflect to grating; the first level optical spectrum of the reflected diffracted light is from ultraviolet ray, visible light, to infrared ray; the visible light and the infrared ray are turned back by one light filtering device; the ultraviolet ray is passed through and shot to ultraviolet luminescent material to give out fluorescent light; using electro-optical signal acquisition circuit includes photo detector to detect the fluorescent light intensity; converting to ultraviolet ray intensity. The invention can be used in sun ray ultraviolet ray detecting, varieties of ultraviolet light sources such as mercury lamp, xenon lamp, and deuterium lamp, and hollow cathode lamp measuring. It has the advantages of compact design, simple using, convenient carrying, and wide detecting range.

Description

technical field [0001] The invention relates to the technical field of photoelectric detection, in particular to an ultraviolet intensity detection method and device. technical background [0002] People's activities are often exposed to the radiation of ultraviolet rays (200nm ~ 380nm) of sunlight. Real-time detection of the intensity of ultraviolet rays in sunlight is beneficial to prevent skin lesions and related diseases, and to arrange production, work and life. In addition, in environmental monitoring, fire detection, outer space radiation detection, biological and chemical ultraviolet light analysis, medical ultraviolet light measurement and scientific research, it is necessary to detect the intensity of ultraviolet light. [0003] Ordinary photovoltaic devices such as photocells and photodiodes are not suitable for direct detection of sunlight ultraviolet rays; although photomultiplier tubes can be used for ultraviolet detection, they are large in size and powered by...

Claims

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Application Information

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IPC IPC(8): G01J1/02G01J1/04G01J1/42
Inventor 黄佐华郑永驹罗泽鹏
Owner SOUTH CHINA NORMAL UNIVERSITY
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