Super-resolution digital holographic measurement device and method based on array light source

An array light source and digital holography technology, applied in the direction of measuring devices, optical devices, instruments, etc., to achieve the effect of improving resolution, improving system stability, and wide application range

Pending Publication Date: 2022-04-12
XIAN TECHNOLOGICAL UNIV
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AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a super-resolution digital holographic measurement device and method based on an array light source in view of the shortcomings of the existing technology that it is difficult to meet the actual detection requirements of complex environments

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  • Super-resolution digital holographic measurement device and method based on array light source
  • Super-resolution digital holographic measurement device and method based on array light source
  • Super-resolution digital holographic measurement device and method based on array light source

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Embodiment Construction

[0026] The present invention will be described in detail below with reference to the drawings and embodiments.

[0027] A super-resolution digital holographic measurement device based on an array light source, such as figure 1 shown. It includes a computer 1, a power supply device 2 and an optical assembly, the optical assembly includes an array light source 3 and a collimating mirror 4, a first dichroic prism 5 and a first plane reflector 6 arranged in sequence on the light path of the array light source 3, the first A second beam-splitting prism 9 and a telecentric imaging lens 10 are arranged on the object optical path of the first plane mirror 6, and an image sensor 11 is positioned at the telecentric imaging lens on the reference optical path of a beam-splitting prism 5. 10 on the image plane and connected to the computer 1.

[0028] During the test, the sample 7 to be tested is arranged between the plane mirror 6 and the dichroic prism 9 and on the object plane of the ...

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Abstract

The invention provides a super-resolution digital holographic measurement device and method based on an array light source, and belongs to the technical field of optical imaging and digital holography. The defect that the actual detection requirement with the complex environment is difficult to meet in the prior art is overcome. According to the technical scheme, the system comprises a computer, a power supply device and an optical assembly, the optical assembly comprises an array light source, a collimating mirror, a first beam splitter prism and a first plane mirror, and the collimating mirror, the first beam splitter prism and the first plane mirror are sequentially arranged on the light path of the array light source. A second beam splitter prism and a telecentric imaging lens are arranged on the object light path of the first plane mirror, the image sensor is located on the image plane of the telecentric imaging lens and connected with the computer, and during testing, a sample to be tested is arranged between the plane mirrors and the beam splitter prisms and located on the object plane of the telecentric imaging lens, and measurement is carried out through a certain method.

Description

technical field [0001] The invention provides a super-resolution digital holographic measurement device and method based on an array light source, and the device and method belong to the technical fields of optical imaging and digital holography. Background technique [0002] The resolution of the digital holographic imaging system is limited by the effective aperture, which is mainly reflected in the small size of the photosensitive chip of the image sensor such as CCD, which makes its resolution limited by the physical optics constraints caused by the diffraction of light. At the same time, due to the limited size of the CCD pixel in the production technology, digital holography can only obtain digital holograms with a spatial frequency of several hundred line pairs per millimeter, resulting in the loss of high-frequency information of object light waves, which seriously affects digital holography. The resolution of the imaging system. The simplest and most effective meth...

Claims

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Application Information

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IPC IPC(8): G01B9/021G03H1/00
Inventor 刘丙才任珠珠田爱玲张英鸽朱学亮王红军岳鑫
Owner XIAN TECHNOLOGICAL UNIV
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