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Light intensity compensation method for Gaussian optical ghost imaging

A Gaussian light ghost and ghost imaging technology, which is applied in the direction of optical devices, measuring devices, instruments, etc., can solve the problem of uneven distribution of light intensity and achieve the effect of solving a large field of view

Active Publication Date: 2018-07-20
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of uneven distribution of light intensity in Gaussian light ghost imaging, and to provide a light intensity compensation method for Gaussian light ghost imaging

Method used

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  • Light intensity compensation method for Gaussian optical ghost imaging
  • Light intensity compensation method for Gaussian optical ghost imaging
  • Light intensity compensation method for Gaussian optical ghost imaging

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Experimental program
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Effect test

Embodiment 1

[0032] The structure of the Gaussian light intensity compensation detector array is as follows: figure 2 As shown, it includes a fixed-resolution area 10 and a variable-resolution area 11 composed of variable-resolution pixels 9 .

[0033] The variable resolution area 11 can not only realize Gaussian light intensity compensation, but also conform to the characteristics of the human retina. like image 3 As shown, in the variable resolution pixel structure, O is the center of the Gaussian light intensity compensation detector array 4, A, B, C, and D are the four vertices of the variable resolution pixel, and the radii OA and OB, that is, the inner diameter of the pixel is r i-1 ;Radius OC and OD, that is, the outer diameter of the pixel is r i ;Arc length AB, that is, the arc length of the inner radius of the pixel is w i-1 ;Arc length CD, that is, the outer radius arc length w of the pixel i . Each ring is evenly divided into N pixels, and the starting ring radius of va...

Embodiment 2

[0048] A ghost imaging system with Gaussian light intensity compensation, such as figure 1 As shown, it includes a light source 1, a rotating frosted glass 2, a beam splitter 3, a Gaussian light intensity compensation detector array 4, a target 5, a converging lens 6, a barrel detector 7 and an electronic computer 8.

[0049] Connection relationship:

[0050]The light source 1, the rotating ground glass 2 and the beam splitter 3 are located on the same optical path of the light source in sequence; the light source 1 and the rotating ground glass 2 are used to generate the parallel pseudothermal light required for ghost imaging; the beam splitter 3 is used to split the pseudothermal light into two The reflected light is the optical path of the reference arm, and the transmitted light is the optical path of the detection arm. The light intensity distribution of the optical path of the reference arm is received by the Gaussian light intensity compensation detector array 4 to com...

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Abstract

The invention belonging to the field of photoelectric imaging relates to a light intensity compensation method for Gaussian optical ghost imaging. According to given known parameters, a parameter of each pixel in a variable resolution region on the condition of the same light intensity values of the pixels is calculated based on a formula I and a Gaussian light intensity compensation detector array is given. The array is used for a ghost imaging system. Therefore, while light intensity compensation is met, large-field-of-view, high-resolution imaging and fast imaging are realized. Non-uniformlight intensities of all pixels generated by light source Gaussian distribution is compensated; and thus accurate target imaging is realized.

Description

technical field [0001] The invention relates to a light intensity compensation method for Gaussian light ghost imaging, which belongs to the field of photoelectric imaging. Background technique [0002] Ghost imaging is a new photoelectric imaging method. In ghost imaging, the light source is divided into two beams, one beam interacts with the target and is received by a single-pixel (or "bucket") detector with no spatial resolution as the detection arm; the other beam does not interact with the target Interactions, directly received by the high-resolution array detector, serve as the reference arm. The target information can be obtained by performing the second-order cross-correlation operation on the two arm signals. Gaussian light is considered to be the best light source for ghost imaging because it has both quantum and semiclassical properties. [0003] But in actual operation, Gaussian light obeys Gaussian distribution in space, which leads to uneven distribution of...

Claims

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Application Information

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IPC IPC(8): G01B11/25
CPCG01B11/25
Inventor 郝群曹杰张芳华
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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