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Miniature diffuse reflection spectrum measurement system based on smart phone

A smart phone and spectral measurement technology, applied in the field of spectral analysis, can solve the problems such as the need for further improvement of portability and large volume, and achieve the effects of reducing stray light interference, flexible detection range, and miniaturized structure.

Pending Publication Date: 2022-02-18
HARBIN INST OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] There are many types of fiber optic spectrometers, but most of them require specific detection devices such as CCD, embedded industrial computer, etc., and are large in size, and their portability needs to be further improved

Method used

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  • Miniature diffuse reflection spectrum measurement system based on smart phone
  • Miniature diffuse reflection spectrum measurement system based on smart phone
  • Miniature diffuse reflection spectrum measurement system based on smart phone

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Embodiment Construction

[0030] The implementation examples of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0031] Such as Figure 1 to Figure 4 As shown, the implementation example of the present invention includes a spectrometer module and a smart phone.

[0032] The spectrometer module includes a housing 7, the opening of which is connected to the optical fiber 1 through a flange to introduce the light to be analyzed, and a slit 2 is installed on the fiber head to generate the incident light of the spectrometer module, which is collimated by the lower half of the concave spherical mirror 3 to become parallel light. Dispersion occurs when the parallel light irradiates on the diffraction grating 4, and the light with different wavelengths is separated into parallel light propagating at different angles. The dispersed light beam shines on the upper half of the concave spherical mirror 3 and focuses on the spectral plane, and the light of dif...

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Abstract

The invention designs a miniature diffuse reflection spectral measurement system based on a smart phone, and belongs to the field of spectral analysis. According to the invention, a small-caliber concave spherical reflector is adopted to realize a collimation imaging system of a traditional micro spectrometer, a miniaturized structure and higher resolution are realized, and a light source, the spectrometer and data processing equipment are integrated into a portable system. The spectrograph is composed of an optical fiber, a slit, a concave spherical reflector and a diffraction grating, and a spectral image formed by the spectrograph is shot by the smart phone. The detection range of the spectrograph is 400 nm to 1100 nm, and the resolution of the central wavelength reaches 0.3 nm. Based on the system, a matched mobile phone APP comprises an image processing program and a spectral analysis program, and different mathematical models can be used for analyzing contents, concentrations and the like of different components. According to the invention, the defects of low resolution, narrow spectral range, multiple elements, large volume and the like of the existing mobile phone spectrometer technology are overcome, and the mobile phone spectrometer is a practical portable spectral analysis solution.

Description

technical field [0001] The invention relates to the technical field of spectral analysis, in particular to a smart phone-based miniaturized diffuse reflectance spectral measurement system. Background technique [0002] Near-infrared spectroscopy is one of the fastest growing and most compelling analytical techniques since the 1990s. Due to the good transmission characteristics of near-infrared light in conventional optical fibers, and its relatively simple instrument, fast analysis speed, non-destructive and small amount of sample preparation, it is almost suitable for all kinds of samples (liquid, viscous body, coating, powder and solid) analysis. [0003] In recent years, with the development of chemometrics, optical fiber and computer technology, near-infrared spectral analysis, especially diffuse reflectance spectral analysis technology, is being applied at an astonishing speed, including agriculture, animal husbandry, food, chemical industry, petrochemical, pharmaceuti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/359G01N21/47G01N21/01G01J3/18
CPCG01N21/359G01N21/4738G01N21/474G01N21/01G01J3/18G01N2021/4742G01N2021/4776G01N2201/062G01N2201/08
Inventor 魏泷王赞琴孙鹏宇
Owner HARBIN INST OF TECH
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