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Embedded spectrum and radiation real-time calibration device

An embedded and spectral technology, applied in the field of spectroscopy and radiation measurement, can solve problems such as inability to perform real-time calibration

Inactive Publication Date: 2009-09-09
SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The internal calibration device of the instrument usually uses sunlight or a calibration lamp as the light source. The internal calibration device of quite a few instruments currently in operation only has the function of radiation calibration, and most of them cannot perform real-time calibration; in addition, for deep space exploration spectroscopy instruments For example, the calibration device is required to be light and miniaturized

Method used

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Embodiment Construction

[0018] The following is based on Figure 1 to Figure 4 A preferred embodiment of the present invention is given to illustrate the structural features and implementation methods of the present invention, and is not intended to limit the scope of the present invention.

[0019] This embodiment is a calibration device provided for a visible-near-infrared imaging spectrometer. The design life is 2 years. Accuracy is better than 10%.

[0020] The embedded spectrum and radiation real-time calibration device includes the following parts:

[0021] 1) Light source 1: In this embodiment, a long-life tungsten lamp is selected as the light source, and the brightness of the light source can be adjusted by changing the voltage, so as to obtain light sources with different radiant brightness.

[0022] 2) Parabolic reflector 2: The parabolic reflector is made of heat-resistant glass PYREX, and the glass used is doped with B 2 o 3 , used to improve the thermal stability and mechanical prop...

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Abstract

The invention discloses an embedded spectrum and radiation real-time calibration device. The device comprises a line-array light source component and a field stop component. The line-array light source component is composed of a light source 1, a parabolic reflector 2, a coupling lens 3 and optical fiber 4. The design of the field stop component 5 allows imaging beams and calibration beams to be capable of entering a subsequent light path of an imaging spectrometer and finally being converged on an area array detector, calibration data are obtained when the imaging spectrometer acquires images of each frame, thus realizing complete real-time spectrum and radiation calibration, meanwhile, the device is embedded inside the imaging spectrometer to meet the light and miniaturization design requirements of instruments.

Description

technical field [0001] The invention belongs to the field of spectrum and radiation measurement, and specifically refers to an embedded spectrum and radiation real-time calibration device, which is integrated in the spectrometer and simultaneously meets the requirements of imaging spectrometer spectrum and radiation real-time calibration. Background technique [0002] The imaging spectrometer obtains the target's spectral information with high spectral resolution while obtaining the target's spatial information, so as to realize the recognition of the ground object. And military applications such as false target recognition are becoming more and more extensive. With the improvement of the level of area array detection devices and spectroscopic devices, staring imaging spectrometers have been developed to a certain extent, and due to the advantages of high signal-to-noise ratio, high imaging efficiency, simple optical-mechanical structure, small size, light weight and low pow...

Claims

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Application Information

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IPC IPC(8): G01J3/00G01J3/10G01J3/02G01J3/28
Inventor 何志平王建宇舒嵘吴金才贾建军沈渊婷
Owner SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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