Working method of single-pixel imaging system based on graphene device
A technology of imaging system and working method, which is applied to the parts of TV system, semiconductor devices, electrical components, etc. It can solve the problems of CMOS prone to noise, complicated CCD manufacturing process, and difficulty in manufacturing large-scale arrays of graphene photosensitive elements, etc. problems, to achieve the effect of high photoelectric conversion characteristics and huge application potential
Inactive Publication Date: 2020-06-09
JIANGNAN UNIV
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[0005] The technical problem to be solved by the present invention is to provide a working method of a single-pixel imaging system based on a graphene device, which aims at the shortcomings of the traditional photosensitive element CCD manufacturing process complex and CMOS prone to noise, and the imaging band is limited to the visible light band , and graphene can be used as a better photoelectric element, but it is difficult to manufacture large-scale arrays of graphene photosensitive elements, etc., a single-pixel imaging system based on graphene devices is proposed
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[0025] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, so that those skilled in the art can better understand the present invention and implement it, but the examples given are not intended to limit the present invention.
[0026] A single-pixel imaging system based on graphene devices, the basic principle of which is figure 1 (a) shown. The imaging system mainly includes a first mirror group, a digital micromirror device (DMD, Digital Micromirrors Device), a second mirror group, a graphene device, a digital source meter and a computer. The reflected light of the target image is converged on the DMD through the first mirror group, and the DMD controlled by the random binary image flips and reflects the light to the second mirror group, and the second mirror group converges the light on a single graphene device. The change of the photocurrent of the graphene device caused by the change of light inten...
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Abstract
The invention discloses a working method of a single-pixel imaging system based on a graphene device. The single-pixel imaging system based on a graphene device comprises a first lens group, a digitalmicro-mirror device (DMD), a second lens group, the graphene device, a digital source meter and a computer. Reflected light of a target image is converged to the DMD through the first lens group, thelight is reflected to the second lens group after the DMD controlled by a random binary image is turned over, and the second lens group converges the light to a single graphene device. Light intensity change causes photocurrent change of the graphene device, the photocurrent change is transmitted to the computer after being detected by the digital source meter, the computer reconstructs an imageby using an optimization algorithm, and the image can reproduce the features of the target image with a very high probability.
Description
technical field [0001] The invention relates to the field of graphene, in particular to a working method of a single-pixel imaging system based on a graphene device. Background technique [0002] Since Niepce, France produced the world's first photo on photosensitive materials in 1822, imaging systems have increasingly become an indispensable tool for people's lives, and are widely used in industrial production, scientific research, military industry, etc. each field. The imaging system transmits the light reflected by the shooting scene to the array of photosensitive elements through the lens of the imaging system, which is excited by the light and releases charges, which are processed by the control chip and converted into various common image information. There are two main types of photosensitive elements commonly used at present: Charge-coupled Device (CCD) and Complementary Metal Oxide Semiconductor (CMOS). CCD is a semiconductor device that can convert optical image...
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IPC IPC(8): H04N5/225H04N5/232H01L31/101
CPCH01L31/101H04N23/54H04N23/50H04N23/80
Inventor 李恭新
Owner JIANGNAN UNIV