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Low-noise luminoscope

A fluorometer and low-noise technology, applied in the field of fluorometer, can solve the problems of increasing background noise and laser beam leakage, and achieve the effects of reducing background noise, improving excitation efficiency, and suppressing slit leakage

Pending Publication Date: 2022-07-29
黄辉 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing capillary sample cell has the following disadvantages: In order to facilitate the excitation of the analyte in the capillary, the capillary is usually transparent, but the transparent capillary will cause the laser beam to leak, thereby increasing the background noise

Method used

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Embodiment Construction

[0025] The present invention will be further described with reference to the following examples.

[0026] See figure 1 , A low-noise fluorometer in this embodiment includes a light source 1 , a capillary 5 , a photodetector 10 , a short-wave filter 3 , an optical lens 9 , and a long-wave filter 8 . The object to be tested is placed in the capillary 5, the light source 1 and the photodetector 10 are respectively arranged at both ends of the capillary 5, the end close to the light source 1 is used as the input port of the capillary 5, and the end close to the photodetector 10 is used as the input port of the capillary 5. Output port of capillary 5.

[0027] The working principle of the fluorometer is as follows: the excitation light 2 transmits through the short-wave pass filter 3 and axially transmits along the input port of the capillary 5. When the excitation light 2 transmits in the capillary 5, the object to be tested in the capillary 5 is excited, so that the The analyte...

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Abstract

The invention provides a low-noise luminoscope which comprises a light source and a photoelectric detector and further comprises a capillary tube and an optical lens, an object to be detected is placed in the capillary tube, the light source and the photoelectric detector are arranged at the two ends of the capillary tube respectively, and a first light filter and a first light absorption material are arranged between the light source and the capillary tube. A second optical filter and a second light absorption material are arranged between the photoelectric detector and the capillary tube, and one end or two ends of the capillary tube are provided with a light absorption material. The method is used for suppressing background noise so as to improve detection sensitivity.

Description

technical field [0001] The invention relates to the technical field of fluorometers, in particular to a low-noise fluorometer. Background technique [0002] The detection principle of the fluorometer is to use a high-energy beam as "excitation light" to excite the object to be tested, and make the object to be tested radiate fluorescence, and the content of trace substances in the object to be tested can be known by detecting the fluorescence. The wavelength of the fluorescence is greater than the wavelength of the excitation light, that is, the photon energy of the fluorescence is lower than the photon energy of the excitation light (the energy of the photon is inversely proportional to the wavelength). When a laser is selected as the excitation light, the fluorometer is called a "laser-induced fluorometer (LIF)", so LIF is a special case of a fluorometer. [0003] Currently, fluorometers typically use capillaries or cuvettes as sample cells. Among them, the capillary can...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/64
CPCG01N21/645G01N2021/6482G01N2021/6471G01N2021/6478
Inventor 黄辉渠波蔡伟成
Owner 黄辉