Miniature optical spectrometer based on stepping motor

A miniature spectrometer and stepping motor technology, applied in the field of spectrometer, can solve the problems of increasing difficulty and complexity, affecting spectral resolution, limited application range, etc., achieving light weight, high spectral resolution, and improved optical resolution. Effect

Inactive Publication Date: 2009-06-24
JIANGSU HUITONG GRP
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  • Abstract
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Problems solved by technology

This structure is suitable for the infrared spectral range, but the realization of the ultraviolet, visible, near-infrared and other spectral bands is not mentioned; the optical path system adopts a folded structure, and the diffracted light and the incident light share the same optical path, which increases the difficulty of the actual optical path design. and complexity, and the signal noise is large, which affects the spectral resolution, so the application range of this scheme is limited

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  • Miniature optical spectrometer based on stepping motor
  • Miniature optical spectrometer based on stepping motor

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Embodiment Construction

[0028] like figure 1 , figure 2 shown. The micro spectrometer system involved in the present invention will be described in detail below in conjunction with the accompanying drawings. The names, models and parameters of relevant devices given in the embodiments are only used as examples, and the devices used for implementing the present invention include the described devices, but are not limited thereto. like figure 1As shown, the miniature spectrometer involved in the present invention is composed of an optical fiber connector 1 , an incident slit 2 , a reflection mirror 3 , a blazed grating 4 , a focusing mirror 5 and a detector 6 . The optical signal to be measured is transmitted from the external optical fiber to the optical fiber connector 1 SMA905, and enters the instrument through the incident slit 2. The incident slit 2 is located at the rear of the optical fiber connector 1. The width of the slit is 50 microns, which is smaller than the diameter of the fiber cor...

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Abstract

The invention discloses miniature spectrograph which is based on a stepping motor-based and comprises an optical fiber connector, an entrance slit, a reflecting mirror, a blazed grating, a focusing mirror and a detector, wherein, the reflecting mirror includes an external framework as well as a plane mirror and a stepping motor which are arranged in the external framework. By adopting the stepping motor and a novel light path structure, the miniature spectrograph provided by the invention is characterized by good applicability and simple light path structure, and can overcome the defects of large signal noise, complicated optical structure and the like in the folding structure light path of the prior miniature spectrograph. In addition, the miniature spectrograph provided by the invention has the advantages of wide applicable spectral range, flexible use and portability, and is characterized in that no error is introduced, no change of internal resistance occurs, and the plane mirror can rotate at an angle of 360 DEG.

Description

technical field [0001] The invention relates to a spectrometer, in particular to a micro spectrometer based on a stepping motor. Background technique [0002] Spectroscopy is a technique for measuring the intensity of light in the ultraviolet, visible, near-infrared and infrared bands. It is widely used in various fields, such as color measurement, concentration detection of chemical components or electromagnetic radiation analysis. The traditional spectrometer is composed of many optical, electrical and mechanical discrete devices, which requires extremely complex optical system and precise mechanical structure, which reduces the reliability of the whole instrument, and has strict requirements on the working and storage environment of the instrument, which limits the its wider application. Especially for the application requirements of online (on-site) spectral measurement, traditional spectrometers are unable to solve it, and the development of miniaturized spectrometers ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01J3/46G01J3/00G01N21/25
Inventor 龙涛刘正东龙江程明慧唐明严松
Owner JIANGSU HUITONG GRP
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