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A full-field super-resolution digital holographic device and imaging method

A super-resolution and digital holography technology, which is applied in the direction of instruments, microscopes, optics, etc., can solve the problems of microscopic super-resolution imaging, etc., and achieve the effect of improving the resolution of the image plane, improving the resolution, and high utilization value

Active Publication Date: 2022-07-26
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, for the above method, when the measured object needs to display its shape in real time, this method has shortcomings, and it cannot be used for rapid microscopic super-resolution imaging.

Method used

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  • A full-field super-resolution digital holographic device and imaging method
  • A full-field super-resolution digital holographic device and imaging method
  • A full-field super-resolution digital holographic device and imaging method

Examples

Experimental program
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Embodiment 1

[0072] Embodiments of the present invention provide a full-field super-resolution digital holography device, which may include: a laser, a polarizer, a first beam splitting component, an optical path component for a reference beam, an optical path component for an object beam, a beam combining component, a collecting system;

[0073] The light emitted by the laser is divided into two beams by the first beam splitting component after passing through the polarizer. The first beam of light passes through the optical path component of the reference beam and reaches the beam combining component; the second beam of light is passed through part of the optical path component of the object beam. Modulation, the modulated light irradiates the measured object, and the light transmitted through the measured object (hereinafter referred to as transmitted light, the transmitted light carries the information of the measured object) reaches the beam combining component;

[0074] The two beams...

Embodiment 2

[0091] Based on the full-field super-resolution digital holographic device provided in the first embodiment, the present embodiment provides an imaging method for a digital holographic device, and the method includes the following steps:

[0092] S1, build the digital holographic device, so that the acquisition system in the digital holographic device after the build controls the light modulation component to load the inclined spherical waves with different illumination angles;

[0093] Wherein, the light modulation component is a modulation component in the optical path component of the object light beam, such as figure 1 The spatial light modulator SLM in .

[0094] S2. Start the laser, and sequentially collect N pieces of holographic image information according to the N pieces of inclined spherical waves loaded by the collection system; N is greater than or equal to 2.

[0095] S3. The acquisition system performs spectral transform processing, Fourier transform processing,...

Embodiment 3

[0121] combine Figure 3 to Figure 8 As shown, the embodiment of the present invention also provides an imaging method of a digital holographic device, and the method may include the following steps:

[0122] A1. Divide the outgoing light of the same light source into an object beam and a reference beam;

[0123] A2. For the object light beam, load N inclined spherical waves with different illumination angles by means of the light modulation component;

[0124] A3. Make the modulated object light beam penetrate the measured object;

[0125] A4. Combine the object light beam penetrating the measured object and the reference beam to form N pieces of holographic image information; N is greater than or equal to 2;

[0126] A5. Collect the N pieces of holographic image information and perform spectral transform processing, Fourier transform processing, and conjugate image processing to obtain intensity information and full-field super-resolution information of the image plane of ...

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Abstract

The invention relates to a full-field super-resolution digital holography device and an imaging method. The device comprises: a laser, a polarizer, a first light splitting component, an optical path component for a reference beam, an optical path component for an object beam, a beam combining component, and a collection system The light emitted by the laser is divided into two beams of light by the first light splitting component after passing through the polarizer, and the first beam of light reaches the beam combining component through the optical path component of the reference beam; the second beam of light passes through part of the optical path component of the object beam. The modulated light irradiates the measured object, and the light passing through the measured object reaches the beam combining component; the two beams of light reaching the beam combining component interfere, and the acquisition system collects the holographic image information of the interfered light, and collects the information of the holographic image. The intensity information and resolution information of the image plane of the measured object are obtained by processing, and the above structure can improve the full-field super-resolution of digital holographic imaging.

Description

technical field [0001] The invention relates to the field of digital holography and optical microscopic imaging, in particular to a full-field super-resolution digital holography device and an imaging method. Background technique [0002] As a method that can realize continuous, rapid, non-label quantitative phase imaging of microscopic objects, digital holographic microscopy has been widely used in non-destructive testing of microscopic organisms and micro-nano materials. Under normal circumstances, with the increase of the magnification of the digital holographic microscope objective lens, the observation range will continue to shrink. appear particularly important. Industry insiders use oblique light or structured light to expand the frequency domain bandwidth of a single image by synthesizing the spectrum of multiple images, which has become an important method to improve imaging resolution. [0003] However, in view of the above method, when the object to be measured ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03H1/00G03H1/08G02B21/36
CPCG03H1/0005G03H1/0866G02B21/367G03H2001/005
Inventor 宋庆和罗润秋夏海廷郭荣鑫李俊昌
Owner KUNMING UNIV OF SCI & TECH