A low-cost and high-sensitivity imaging system and its imaging method

Abstract

The invention discloses a low-cost and high-sensitivity imaging system and an imaging method thereof, wherein the method includes: after modulating a laser light source to a preset frequency, irradiating the object to be photographed; The image is imaged on the programmable digital micromirror, and the programmable digital micromirror encodes the image; the encoded image light signal reaches the single-pixel sensor through the condenser, and the single-pixel sensor converts the received light signal into an analog signal; the sensor read-write module After the image information in the analog signal is acquired by the lock-in amplification device, the acquired image information is converted and stored as digital data; the imaging display module restores and displays the image according to the digital data. The invention modulates the laser light source first, and then acquires the image information in the analog signal, which can filter out the background noise, thereby realizing the collection of weak photoelectric signals, greatly improving the imaging sensitivity, and having small size and low cost, it can be widely used in the field of electronic imaging.

Description

technical field [0001] The invention relates to the field of electronic imaging, in particular to a low-cost and high-sensitivity imaging system and an imaging method thereof. Background technique [0002] With the development of CCD / CMOS sensor technology, digital image sensors are widely used in portable mobile devices such as DSLR cameras and smart phones. High-speed cameras are widely used in technical fields such as industrial inspection, biomedical high-speed microscopic imaging, high-speed particle imaging, and military rocket launch analysis. [0003] Due to the limitation of CCD and CMOS sensor size, image resolution, imaging speed and hardware cost are mutually restricted. High-resolution sensors require large-size or small photoelectric sensing units, while high-speed imaging requires larger-sized sensing units or high-sensitivity sensors. At the same time, image sensors can be used as distance measuring components, and have broad application prospects in the fi...

AI Technical Summary

Problems solved by technology

After the above analysis, it can be known that the current high-sensitivity cameras are relatively expensive, and the size of the camera is too large, which is not suitable for general use.

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