A dual-field computational correlation imaging system and method
A correlative imaging and dual field of view technology, which is applied in the direction of optical components, optics, instruments, etc., can solve the problems of small field of view and slow speed of computational correlative imaging, and achieve the goal of increasing light intensity utilization efficiency, reducing cost, and measuring distance Effect
Active Publication Date: 2017-09-29
BEIJING INST OF AEROSPACE CONTROL DEVICES
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[0003] The technical problem to be solved by the present invention is: in order to overcome the problems of small field of view and slow speed of existing computational correlation imaging, a dual-field computational correlation imaging system and method are provided, which solves the problem of large field of view and fast imaging of computational correlation imaging question
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[0025] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0026] The invention discloses a system and method for dual-field of view computational correlation imaging. The working flow chart of the system is as follows: figure 1 The shown includes: parallel light illumination unit, DMD micromirror, DMD control circuit, first projection lens, second projection lens, first imaging target, second imaging target, first receiving lens, second receiving lens, first photoelectric a detector, a second photodetector, a first data acquisition card, a second data acquisition card, a first processor, and a second processor.
[0027] The parallel light lighting unit is composed of: an optical lighting system composed of a laser light source or LED light source and a lens group, no specific parameters are required, and the required function is: output parallel and uniform lighting beams;
[0028] Both the first p...
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The invention provides a dual field-of-view calculation correlated imaging system and a dual field-of-view calculation correlated imaging method. The dual field-of-view calculation correlated imaging system comprises a parallel light illumination unit, a DMD micromirror, a DMD control circuit, projection lenses, targets, receiving lenses, photoelectric detectors, data acquisition cards and processors. Included angles between a geometric center normal direction of the digital micromirror device DMD and the optical axes of the two projection lenses are +24 degrees and -24 degrees, and each micromirror rotating shaft of the DMD is vertical to the optical axes of the two projection lenses; and the two projection lenses and the two receiving lenses are positioned on the same optical path. The two projection lenses project a light field modulated by the DMD to the two targets in different field-of-view, reflected light of the targets are received respectively by the two receiving lenses and detected by the photoelectric detectors, the data acquisition cards acquire signals, the two processors are used for calculation and processing, and the display displays images in a screen-split manner. The dual field-of-view calculation correlated imaging system and the dual field-of-view calculation correlated imaging method overcome the defects of small existing calculation correlated imaging field-of-view, low utilization rate of energy emitted by light sources, long imaging time, high cost and the like, and can achieve low-cost single DMD dual field-of-view calculation correlated imaging.
Description
technical field [0001] The invention relates to a dual-field computational correlation imaging system and method, and belongs to the field of novel imaging such as intensity correlation imaging, quantum imaging, and single-pixel camera imaging. Background technique [0002] Computational correlation imaging technology (also known as quantum imaging technology) is a new application technology developed from light field intensity correlation imaging technology. Computational correlation imaging has the advantages of traditional intensity correlation imaging: imaging image quality is weakly affected by atmospheric turbulence or scattering media; low technical difficulty, low cost, and high sensitivity. Correlation imaging technology has great application value in national defense, military, remote sensing, communication, biomedicine and other fields. The problem that needs to be solved for the current practical application of computational correlation imaging technology is the...
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IPC IPC(8): G02B27/00G02B27/10
CPCG02B27/00G02B27/106
Inventor 李明飞赵连洁张安宁刘院省莫小范
Owner BEIJING INST OF AEROSPACE CONTROL DEVICES