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Method and device for measuring intensity of UV.

An intensity detection and ultraviolet technology, which is applied in measurement devices, photometry, optical radiation measurement, etc., can solve the problem of reducing the sensitivity of ultraviolet light detection, and achieve the effects of low environmental visible light radiation interference, strong directivity, and low cost.

Inactive Publication Date: 2009-07-22
SOUTH CHINA NORMAL UNIVERSITY
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  • Abstract
  • Description
  • Claims
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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.
  • Method and device for measuring intensity of UV.

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Experimental program
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Embodiment Construction

[0043] Such as figure 1 , 2 As shown in the figure, after the ultraviolet rays pass through the filtering and collimating 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 diffracted light appears for a period from the ultraviolet , The spectral band from 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 a...

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Abstract

The invention relates to a method and device for detecting the intensity of ultraviolet rays, comprising: after the light rays containing ultraviolet rays are collimated by two rectangular apertures, a beam of quasi-parallel light in a single direction is incident on a reflection grating, and the first-order of the reflected diffracted light The spectrum is the spectral band from ultraviolet, visible light to infrared. Visible light and infrared are blocked by a filter device, and ultraviolet rays are emitted to the ultraviolet fluorescent material through the filter device to emit fluorescence. A photoelectric signal acquisition circuit including a photodetector To detect the fluorescence intensity, and then convert the fluorescence intensity into the intensity of ultraviolet rays. The method and detection device are not only suitable for strong sunlight ultraviolet detection, but also can be used for the measurement of various ultraviolet light sources, such as mercury lamps, xenon lamps, deuterium lamps and hollow cathode lamps. The detector is compact in design, easy to use, easy to carry, and has a wide detection 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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Patent Type & Authority Patents(China)
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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