A Spectral Calibration Method

Abstract

The invention discloses a portable spectral calibration device and a spectral calibration method of the portable spectral calibration device. An excitation light source module of the calibration device comprises a light source, a battery, an oscillating circuit and a light collecting element. A lighting panel is of a two-layer structure comprising a light guide plate and a prism plate, the prism plate is arranged on the upper layer, the light guide plate is arranged on the lower layer, the light guide plate comprises a light inlet, a light guide bar and a light uniformizing plate, the bottom face of the light uniformizing plate is composed of a plurality of single tetrahedrons, and the prism plate is arranged on the upper portion of the light uniformizing plate. Lasers emitted by the excitation light source module are transmitted to the light inlet of the lighting panel through an optical fiber to enter the light guide bar. The lighting panel is of the two-layer structure, and thus the divergence-angle-controlled light source with certain uniformity and large area is provided; the tetrahedron microstructures are arranged at the bottom of the light guide plate, and thus the calibration light source can achieve certain uniformity; the prism plate is adopted for controlling the angle of divergence of light, and thus the light energy utilization rate can be increased. The spectral calibration device is small in size and light in weight and can be conveniently used for calibrating a field imaging spectrometer.

Description

technical field [0001] The invention relates to a spectrum calibration device, in particular to a portable spectrum calibration device suitable for the field. Background technique [0002] At present, imaging spectrometers have been widely used in agricultural production management, resource investigation, biomedicine and other fields. However, with the development of optics, electronics, computers and other technologies, the spectral resolution of imaging spectrometers can be made very high. The spectrometer is calibrated before use to improve the reliability of the spectral data. At present, laboratory spectral calibration equipment is based on monochromator wavelength scanning and spectral lamps. Calibration equipment and calibration methods based on monochromators are complicated and difficult to use in the field, airborne or spaceborne, and spectral lamps are difficult to provide. Uniform and large-aperture systematic illumination. At present, the spectral calibratio...

AI Technical Summary

Problems solved by technology

At present, laboratory spectral calibration equipment is based on monochromator wavelength scanning and spectral lamps. Calibration equipment and calibration methods based on monochromators are complicated and difficult to use in the field, airborne or spaceborne, and spectral lamps are difficult to provide. Uniform and large-aperture systematic illumination

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