Ultraviolet laser biomone counter

An ultraviolet laser, ultraviolet laser technology, applied in biochemical equipment and methods, microbe measurement/inspection, instruments, etc., to achieve the effect of multiple measurement functions

Inactive Publication Date: 2003-03-12
上海镭慎光电科技有限公司 +1
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  • Abstract
  • Description
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The present invention contains three

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  • Ultraviolet laser biomone counter
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  • Ultraviolet laser biomone counter

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[0031] Such as figure 2 and 3 shown in the structure. The ultraviolet laser 8 is an all-solid-state laser after the triple frequency of the yttrium aluminum garnet (YAG) laser pumped by the semiconductor laser, its wavelength is 355nm, the beam diameter is φ0.25mm, and the power is 100mW. The beam expansion magnification of the beam expander group 9 is 4 times, that is, the cross section of the laser beam output by the beam expander group 9 is elliptical, and the lengths of its major axis and minor axis are 1.0mm and 0.25mm respectively. The focal length of the cylindrical lens 10 is 50 mm, and the size of the focal line formed by it in the photosensitive area 5 is 1.0 mm×0.173 mm. The two collimating mirrors 111 and 151 and the two focusing mirrors 113 and 153 in the scattered light receiving mirror group 11 and the fluorescence receiving mirror group 15 adopt the same structure, and the focal lengths of the two collimating mirrors 111 and 151 are 17.8mm, and the numerical...

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Abstract

An ultraviolet laser bioparticle counter for measuring the diameter and biological characteristics of the bioparticles suspended in air is composed of ultraviolet laser lighting path using ultraviolet laser device as light source, scattered light receiving path, fluorescence receiving path, and sampling air channel. It is characterized by that the filter in scattered light receiving path can reflect all fluorescence and the filter in fluorescence receiving path can reflect all ultraviolet laser beam. Its advantages are multiple function, and high sensitivity, receiving efficiency and S/N ratio.

Description

Technical field: [0001] The invention relates to an ultraviolet laser biological particle counter, which is mainly used for measuring the diameter and biological characteristics of suspended biological particles in the air. Background technique: [0002] Suspended particles floating in the air include non-biological particles and biological particles, such as planktonic microorganisms such as bacteria and fungi. Bioparticle cells contain fluorescent molecules such as riboflavin, nicotinamide adenine dinucleotide phosphate, and tryptophan. Under the irradiation of ultraviolet laser with a wavelength between 320 and 360nm with high photon energy, scattered light will be generated at the same time. and fluorescence. The wavelength of the scattered light is the same as that of the ultraviolet illumination laser, while the wavelength of the fluorescence is greater than that of the ultraviolet illumination laser, and its wavelength range is between 390 and 600nm. The geometric s...

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Application Information

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IPC IPC(8): C12Q1/02G01J1/00
Inventor 黄惠杰赵永凯任冰强程兆谷杜龙龙路敦武
Owner 上海镭慎光电科技有限公司
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