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Optical imaging system and method based on random light field space structure regulation and control

An optical imaging system and space structure technology, applied in the optical field, can solve the problems of the limitation of the optical memory effect of the imaging range and the low efficiency of dynamic object imaging.

Active Publication Date: 2021-07-09
卡亚(北京)国际光电技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] For this reason, the technical problem to be solved by the present invention is to overcome the defects in the prior art that the imaging efficiency of dynamic objects is low, the imaging range is limited by the optical memory effect, and the point spread function of the entire optical system needs to be measured

Method used

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  • Optical imaging system and method based on random light field space structure regulation and control
  • Optical imaging system and method based on random light field space structure regulation and control
  • Optical imaging system and method based on random light field space structure regulation and control

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Embodiment 1

[0039] see figure 1 As shown, this embodiment provides an optical imaging system based on regulation of the spatial structure of a random light field. The system includes a scattering component, a first beam splitting polarization component, an optical measurement component 10 and a computing unit 22 .

[0040] The scattering component is used to use the scattering medium 5 to scatter the light beam transmitted through the free space to obtain the light to be measured, wherein the light beam carries the information of the object 3 to be measured. The scattering medium 5 is preferably frosted glass.

[0041] The first beam-splitting polarization component is used to split and polarize the light to be measured. One beam of light to be measured is divided into x-direction polarized light and y-direction polarized light, and the other beam to be measured is combined with the reference light and then divided into Polarized light in the x direction and polarized light in the y dire...

Embodiment 2

[0058]An optical imaging method based on random light field spatial structure regulation provided by Embodiment 2 of the present invention is introduced below. The optical imaging systems regulated by the field space structure can be referred to each other correspondingly.

[0059] see figure 2 As shown, this embodiment provides an optical imaging method based on random light field spatial structure regulation, including the following steps:

[0060] S100: Use the scattering medium 5 to scatter the light beam transmitted through free space to obtain the light to be measured, wherein the light beam carries the information of the object to be measured.

[0061] As an example, the light beam carrying the information of the object under test 3 transmitted through free space will lose phase information under the scattering effect of the scattering medium 5. If it is necessary to restore the information of the image, we can measure the coherent structure of the light field behind ...

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Abstract

The invention relates to an optical imaging system and method based on random light field space structure regulation, and the system comprises a scattering medium, a first beam splitting polarization assembly, an optical measurement assembly and a calculation unit, and carries out the scattering processing of transmission light, and obtains to-be-measured light; light to be measured is subjected to beam splitting polarization processing, one beam of light to be measured is divided into x-direction polarized light and y-direction polarized light, and the other beam of light to be measured is combined with reference light and then divided into x-direction polarized light and y-direction polarized light; measuring the light intensity distribution of the light to be measured, the light intensity distribution of x-direction polarized light and y-direction polarized light of the reference light after beam combination of the reference light and the light to be measured; and obtaining the cross-spectral density of the to-be-measured light according to the light intensity distribution, recovering the light intensity distribution on the surface of the scattering medium by using the cross-spectral density, and calculating the light intensity distribution of the scattering medium to obtain the shape and position of the to-be-measured object. The dynamic object can be quickly imaged, the imaging range is not limited by the optical memory effect, and the point spread function of the whole optical system does not need to be measured.

Description

technical field [0001] The invention relates to the field of optical technology, in particular to an optical imaging method and system based on random light field spatial structure control. Background technique [0002] With the gradual development of imaging through scattering media, many breakthroughs have been made. At present, the commonly used method is to suppress the scattered light and extract the ballistic light passing through the scattering medium to perform weak scattering medium imaging. The main technologies include adaptive optical imaging technology, optical coherence tomography technology, multiphoton microscopy and multiphoton microscopy. Spectral photoacoustic tomography, etc. The development and application of these technologies have solved problems in the fields of astronomical imaging, underwater detection, and biological imaging. With the continuous in-depth study of the scattering mechanism, the current scattering imaging technology no longer focuses...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B27/00G02B27/28G01B11/00G01B11/24
CPCG02B27/00G02B27/283G01B11/00G01B11/24G02B30/10G01N21/4795G01N2021/479G01N21/21
Inventor 彭德明刘永雷陈亚红王飞蔡阳健
Owner 卡亚(北京)国际光电技术有限公司