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Visible spectrophotometer illuminating source

A spectrophotometer and light source technology, applied in the directions of spectrophotometry/spectrophotometry/monochromator, optical radiation measurement, measuring device, etc., can solve the problems such as the influence of the purity of the monochromator, the influence of the linear range of the sensitivity calibration curve, etc. , to achieve the effect of stable light source intensity, small size and low calorific value

Active Publication Date: 2010-08-18
CHANGCHUN JILIN UNIV LITTLE SWAN INSTR
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AI Technical Summary

Problems solved by technology

Due to the limitations of many conditions, the purity of the light from the monochromator is affected
Thus affecting the sensitivity, selectivity and linear range of the calibration curve of the instrument
A new modular light source with integrated ultra-bright light-emitting diodes is used to replace tungsten lamps as a light source for spectrometers, but there is no literature report yet.

Method used

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  • Visible spectrophotometer illuminating source
  • Visible spectrophotometer illuminating source
  • Visible spectrophotometer illuminating source

Examples

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specific Embodiment approach

[0020] The invention is a special device used as a light source in spectrophotometry.

[0021] As shown in Figure 1, the light source of spectrophotometer of the present invention comprises a circuit board 8, an LED angle positioning plate 10, and several LED super bright light-emitting diodes 1,2,3,4,5,6,7 (Fig. Take 7 as an example, the number of super bright light-emitting diodes can be increased or decreased). Among them, the LED ultra-bright light-emitting diodes 1 to 7 are inserted into the LED angle positioning board 10 at different angles, and the pins are welded on the light source circuit board 8. The connection angle of the LEDs on the LED angle positioning board 10 should meet the requirements of multiple light sources. The emitted light of the LED super bright light-emitting diode converges at a point F, and the focal point F should be on the incident slit of the monochromator 11 . Among them, the length of the focal length matches the optical path of the colorim...

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PUM

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Abstract

Disclosed is an illuminant of a visible-infrared spectrometer, which comprises a circuit board, an angle locating plate and a plurality of super bright light emitting diode LEDs. A plurality of round holes with different angles which is used to install the LED are opened on the angle locating plate, the extension line of the round holes are gathered in one point, after the plurality of LEDs are inserted in the locating holes of the angle locating plate in different angle, pins are wielded on the circuit board. The invention chooses single or double color fixing wavelength to respectively project single spectrum, and the plurality of LEDs stable spectrum property project a constant spectrum with the range between 380nm-780nm, further the invention is low in energy-consumption, small in volume, environment-friendly, fast in response speed, long in useful life, fine in stability, and high in accuracy, thereby the invention is a product to take place tungsten halide lamp illuminant. The employment of the combined type modularized illuminant can increase useful life, stability, reliability and measuring accuracy of instrument, thereby the combined type modularized illuminant can be widely applied to all kinds of visible-infrared spectrometers and portable special detecting instruments.

Description

technical field [0001] The invention relates to a new combined modular light source for a visible spectrophotometer with low energy consumption, small size, environmental protection, fast response (pulse control), long life, good stability and high precision, which can replace halogen tungsten light source. In particular, it relates to an update replacement product applied to the light source part in the visible spectrophotometer and the special portable detection instrument. Background technique [0002] Spectrophotometry is an analysis method established based on the selective absorption of light by substances, and it is also one of the instrumental analysis methods widely used at present. The theoretical basis of spectrophotometry is the Lamber-Beer law. Sensitivity and precision are two important technical parameters. The stability and service life of the light source and whether the monochromator can emit high-purity monochromatic light are one of the reasons that aff...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01J3/10
Inventor 于爱民王振德
Owner CHANGCHUN JILIN UNIV LITTLE SWAN INSTR
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