Digital light processing technology-based portable liquid food near infrared spectroscopy analyzer

A technology of digital light processing and near-infrared spectroscopy, which is applied in the direction of material analysis, analysis materials, instruments, etc. by optical means, can solve the problems that the volume of near-infrared spectrometer cannot be controlled, cannot form a point light source, and the area of ​​the light source is large, etc., to achieve Shortened data processing time, improved data processing efficiency, and high detection efficiency

Inactive Publication Date: 2015-11-25
深圳莱特光电股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the light source composed of too many LED chips has a large area and cannot form a point light source.
When a laser generator that can be used as a point light source is used

Method used

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  • Digital light processing technology-based portable liquid food near infrared spectroscopy analyzer
  • Digital light processing technology-based portable liquid food near infrared spectroscopy analyzer
  • Digital light processing technology-based portable liquid food near infrared spectroscopy analyzer

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0045] Example 1

[0046] This embodiment provides a portable infrared spectrometer for fruit juice detection, such as figure 1 As shown, it includes a hand-held housing 1, a light emitting port 2 provided at the same end of the housing, and a blazed grating 3 for collecting reflected light.

[0047] Its internal structure is like figure 2 As shown, it includes an LED light source assembly 21, a reflector, a blazed grating 3, a digital micromirror assembly 4, a single photon detector 6, a linear detector 7 and a spectral information processing system. The spectral information processing system 5 and the digital micro The mirror assembly, the single photon detector, and the linear detector are connected in communication; it is characterized in that: the LED light source assembly includes a heat dissipation substrate, a flexible circuit board covering the heat dissipation substrate, and a plurality of LED chips mounted on the flexible circuit board; The surface of the flexible circu...

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PUM

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Abstract

The invention discloses a digital light processing technology-based portable liquid food near infrared spectroscopy analyzer. The digital light processing technology-based portable liquid food near infrared spectroscopy analyzer comprises a LED light source assembly, a reflective mirror/condensing lens, a blazed grating, a digital micromirror assembly, a single-photon detector, a linear detector and a spectral information processing system. The near infrared spectroscopy analyzer utilizes a matrix composed of multiple LED chips as a near infrared spectroscopy analyzer light source. The condensing lens is arranged at the outer side of the LED chip so that a light source luminescence area is reduced and enough light source intensity is provided. The LED chip has the characteristics of high light intensity and low power and is conducive to reduction of a near infrared spectroscopy analyzer volume so that the near infrared spectroscopy analyzer is portable and is suitable for fluid food detection.

Description

technical field [0001] The invention relates to the technical field of food additive detection, in particular to a portable liquid food near-infrared spectrum analyzer based on digital light processing technology. Background technique [0002] Preservatives are commonly used food additives in various fluid foods (such as juice, wine, and dairy products), which can effectively extend the shelf life of fluid foods with high water content. Among them, benzoic acid preservatives are particularly common in the domestic food processing industry. Excessive benzoic acid preservatives in fluid food are likely to cause severe poisoning. Therefore, benzoic acid content is an important testing item in food testing. Near-infrared spectroscopy is now commonly used to detect the content of preservatives in food. [0003] Near Infrared light (Near Infrared, NIR) is an electromagnetic radiation wave between visible light (VIS) and mid-infrared (MIR). The first non-visible region found in ...

Claims

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Application Information

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IPC IPC(8): G01N21/359G01N21/3577
Inventor 冯海涛施光典
Owner 深圳莱特光电股份有限公司
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