Large-area signal light energy collection system and method

Abstract

The invention discloses a large-area signal light energy collection system and method, and belongs to the technical field of photoelectric detection. The system includes a lens column array consistingof multiple miniature column lenses, an energy transfer bundle and multiple photodetectors. The energy transfer bundle includes an energy transfer bundle receiving end used for arranging the lens column array and multiple optical fiber bundles. Each row of miniature column lenses of the miniature column lens array are connected with one photodetector through one fiber optic bundle. The method includes the steps of setting the lens column array consisting of the multiple miniature column lenses, the energy transfer bundle and the multiple photodetectors, wherein the energy transfer bundle includes one energy transfer bundle receiving end and the multiple optical fiber bundles; arranging the lens column array at the energy transfer bundle receiving end; and connecting each row of miniaturecolumn lenses of the miniature column lens array with one photodetector through the one fiber optic bundle. According to the system and the method, an optical fiber array is introduced to increase a light receiving area of a detection end to collect signal light energy of a large field of view, the number of the photodetectors is greatly reduced, collection efficiency of echo signals is improved,and hardware cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of photoelectric detection, and in particular relates to a large-area signal light energy collection system and method. Background technique [0002] In recent years, with the continuous development of science and technology, the application of laser ranging has become more and more extensive, and there is also a diversified development trend of lidar, among which all-solid-state lidar has become one of the important development directions. At present, the commonly used solid-state lidar needs to receive signal light in a wide range of field of view, and needs to collect the signal light energy corresponding to different positions. However, the single-chip or array-type energy detection elements receive signal light area is very limited, and the price is very expensive. At the same time, the single method of reducing the size of the photosensitive surface by compressing the spot size at the receiving lens e...

AI Technical Summary

Problems solved by technology

However, the number of pixels, the number of optical fiber bundles, and the number of photodetectors used in this invention are in a 1:1:1 relationship, so that the signal of each pixel needs to be collected, and a large number of photodetectors need to be arranged in a limited space , resulting in a large non-photosensitive dead area in the middle, and there is still a problem of crosstalk between photodetectors to a certain extent

Moreover, the number of photodetectors used is large, which increases the hardware cost

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