Multispectral image capture system

Abstract

The invention discloses a multispectral image capture system which comprises a multispectral imaging lens, wherein a complementary metal oxide semiconductors (CMOS) image sensor for photographic imaging is arranged behind the multispectral imaging lens, and is fixedly arranged on an optical table, the multispectral imaging lens comprises a multi-channel filter and an array micro lens, and each lens unit of the array micro lens and one filter unit of the multi-channel filter form an optical channel. The multispectral image capture system adopts the multispectral imaging lens which is integrated with the multi-channel filter and the array micro lens, and accordingly, the problem of reduced imaging quality which is caused by the unmatched relative positions of the filter and the lens is solved under the condition of external disturbance; in addition, the filter adopts a multi-film system structure of an interference filter, so the multi-channel integration of visible light and near-infrared bands can be realized; and furthermore, a micro linear motor is introduced into the system, and accordingly, the automatic focusing function of the system is realized.

Description

technical field [0001] The invention relates to a micro optomechanical system, especially a multi-spectral image capturing system. Background technique [0002] In common imaging systems, people often increase the image resolution and obtain more information by enlarging the pixel specification of the image sensor. However, this method has shown bottlenecks in many applications, and some information cannot be extracted from simple grayscale data. Image information at different wavelengths can be obtained by using multispectral imaging technology, which cannot be achieved by ordinary imaging methods. Therefore, multispectral imaging has wide application value in remote sensing measurement, biomedical imaging, target detection and tracking and other fields. [0003] One of the current multispectral imaging systems is a combination of an ordinary single-aperture lens and a filter rotation mechanism. This system realizes the conversion of different color filters through a mec...

AI Technical Summary

Problems solved by technology

The disadvantage of this system is that the calibration accuracy between each channel of the filter and each lens in the array is relatively high. When there is an external disturbance, a small position mismatch will cause light of different colors to enter the same lens, resulting in The inaccuracy of image data in a certain band will affect the overall imaging performance of the system

In addition, the system only works in the visible light band, and cannot realize the acquisition of images in the near-infrared band

At the same time, the system also has the shortcomings of discrete components and low integration, which are not conducive to the expansion of application fields.

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