Compact miniature snapshot spectral imaging detection device and detection method

Abstract

The invention discloses a compact miniature snapshot spectral imaging detection device and detection method. The device comprises a spectral image replication module and a data acquisition, processing and display system. The spectral image replication module comprises a micro-lens array, linear gradient filters and an area array detector which are arranged along the incident light direction in turn. The linear gradient filters are closely clung to the light sensing surface of the area array detector. The light sensing surface of the area array detector is arranged on the image surface of the micro-lens array and connected with the data acquisition, processing and display system. The arrangement direction of each row of lenses of the micro-lens array and the filtering wave line direction of the same wavelength in the linear gradient filters have an inclined angle. The device is suitable for detecting the spectral image information of a dynamic or fast change target so that the adverse influence caused by target change, jitter noise or environmental change and other factors can be effectively avoided, and the device has potential application value in the field of astronomical observation, space detection, earth remote sensing, machine vision and biomedical diagnosis.

Description

technical field [0001] The invention belongs to the field of optical remote sensing detection, in particular to a spectral imaging device and detection method for spectral radiation detection. Background technique [0002] The electromagnetic wave radiated by an object contains spectral information that changes with the spatial position, which can be used to invert the shape and physical and chemical characteristics of the target. Spectral imaging technology is a cutting-edge remote sensing technology that simultaneously acquires spectral information of two-dimensional space targets. It has certain potential for improving the efficiency and accuracy of target detection, identification and classification. Forecasting, atmospheric detection, astronomical observation, machine vision bionics, biomedical diagnosis and many other fields will have important application value and prospects. [0003] Spectral imaging technology can be divided into two categories according to the tim...

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Problems solved by technology

However, the number of spectral channels of the filter array sub-aperture spectral imaging technology is limited by the processing and integration technology of small-aperture narrow-band filters; to obtain high spectral resolution, hundreds of filters need to be integrated together to achieve very difficult【9】

The filter array sub-focal plane imaging technology usually adopts the Bayer arrangement method, and periodically arranges several narrow-band filters of different wavelength bands on the focal plane, which also requires precise processing and integration technology, and can only acquire several spectral images of bands

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