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Multilayer imaging device and imaging method based on vortex photon sieve telescope system

An imaging device and photon sieve technology, applied in telescopes, optics, diffraction gratings, etc., to achieve the effects of increased degrees of freedom, convenient manufacture, and simple structure

Inactive Publication Date: 2019-03-26
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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  • Abstract
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Problems solved by technology

However, the creation of the focal point of the Greek ladder photon sieve array requires complex coding of the photon sieve holes in order to obtain multiple focal planes

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  • Multilayer imaging device and imaging method based on vortex photon sieve telescope system

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Embodiment Construction

[0032] The present invention will be further described below in conjunction with the embodiments and accompanying drawings, but the protection scope of the present invention should not be limited thereby.

[0033] see first figure 1 , figure 1 It is a diagram of the multilayer imaging device based on the vortex photon sieve telescope system of the present invention. It can be seen from the figure that the multilayer imaging device based on the vortex photon sieve telescope system of the present invention includes a coherent light source 1, a telescope system 5, a vortex photon sieve 6, a photoelectric The coupling detector 7 and the computer 8 are characterized in that there is also a beam expander system 2 and an aperture 3 composed of a microscope objective lens, a pinhole and a lens. When the object 4 to be measured is illuminated by monochromatic parallel light, the device can generate a three-dimensional array image plane and realize discrete imaging under a fixed system...

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Abstract

The invention provides a multilayer imaging device and imaging method based on a vortex photon sieve telescope system. The main component of multi-layer imaging is a combination of a vortex photon sieve and a telescope system, and the vortex photon sieve is a diffractive optical element capable of achieving a vortex light field. According to the invention, the fixed system discrete multi-layer imaging of a coherent light field can be achieved, the off-axis imaging of different magnifications can be simultaneously achieved by moving the photon screen, the degree of freedom of the optical path design is increased, the operation is simple, and the structure is stable. The device is likely used in the field of a multi-layer imaging system, an endoscopic system, wavefront measurement, medical imaging, tomography, three-dimensional information storage and optical capture.

Description

technical field [0001] The invention relates to multi-layer imaging of coherent light field, in particular to a multi-layer imaging device and imaging method based on a vortex photon sieve telescope system. Background technique [0002] Multilayer imaging has practical needs and applications in biological cell microscopy, endoscopic systems, wavefront measurement, medical imaging, tomography, three-dimensional information storage, holographic interferometry and other disciplines. Traditional multi-plane imaging methods usually use lens arrays or spectroscopic elements. The former uses a multi-lens matrix to generate an array image plane light field, and the latter uses multispectral imaging combined with a confocal system to generate a color composite light field. Either way requires more than three lens combinations. [0003] As a diffractive optical element, a Fresnel zone plate is a traditional diffractive lens that can achieve focusing and imaging in the extreme ultravi...

Claims

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Application Information

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IPC IPC(8): G02B27/42G02B23/12G02B5/18
CPCG02B5/1876G02B23/12G02B27/4205
Inventor 张军勇李优张艳丽周申蕾朱健强
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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