Hyperspectral imaging light source system

Abstract

The invention discloses a hyperspectral imaging light source system. An illumination box is a closed rectangular solid, wherein the cavity of the illumination box is respectively provided with a line scan camera, an optical splitting system, an object stage of an electric control translation stage, and an object to be detected, an electric control translation stage lead screw, a line source box and a photosensitive diode which are arranged on the object stage; a line source controller, an electric control translation stage controller and a computer are arranged outside the illumination box; and the photosensitive diode senses the light-intensity variation of the line source and inputs feedback signals to the line source controller, and a halide lamp is arranged in the line source box and is connected with the line source controller. The invention does not need to be subject to the conduction through optical fibers, thereby eliminating noises caused by the nonuniform illumination and improving the illumination uniformity and stability. Besides, the invention eliminates the light-intensity variation as a result of the increased service life of the light source and the instability of the external circuit, inhibits the baseline drift phenomenon in the signal acquisition process, improves the utilization ratio of the light source, and can acquire hyperspectral images of high quality and high stability.

Description

technical field [0001] The invention relates to a hyperspectral imaging technology, in particular to a light source system for hyperspectral imaging that can intelligently adjust light intensity. Background technique [0002] The basic process of hyperspectral imaging is that the light of a certain band emitted by the light source irradiates the surface of the object, and the light changes on the surface and inside of the object, such as reflection, scattering, and transmission. , output a hyperspectral image after signal processing such as photoelectric conversion. From the hyperspectral imaging process, it can be found that the light source provides energy input for the entire imaging system, and the arrangement of the light source determines the reflection path of light on the surface of the object. Therefore, the light source and its arrangement method are key components of the entire imaging system. Although the accuracy of hyperspectral imaging is high, the acquisitio...

AI Technical Summary

Problems solved by technology

Although the two devices disclosed above can meet the basic requirements of hyperspectral image acquisition, their defects are: 1. The light source and the arrangement of the light source are not optimized. For example, the luminous efficiency and light intensity of halogen lamps will decrease with the increase of service life. change, and the energy loss of light in the process of optical fiber transmission, etc.

2. The light source irradiates the object in a single way. The light source is directly projected onto the object at a certain angle with the plane of the stage, so it is difficult to ensure uniform illumination

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