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A holographic imaging device

A technology of holographic imaging and imaging objects, which is applied in the field of holographic imaging and can solve the problems of holographic shot noise, parasitic interference fringes, and low resolution

Active Publication Date: 2022-06-21
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the traditional holographic imaging technology uses a laser light source, and the generated hologram has shot noise and parasitic interference fringes, and the resolution is low.

Method used

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Embodiment Construction

[0029] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0030] The purpose of the present invention is to provide a holographic imaging device capable of reducing shot noise and spurious interference fringes in the hologram.

[0031] In order to make the above objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0032] figure...

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Abstract

The invention provides a holographic imaging device, comprising: a light source, a beam splitter, a first plane mirror, a second plane mirror, a third plane mirror and an image acquisition module; the light source emits an incoherent light beam; the incoherent light beam irradiates the object to be imaged Above; the light beam passing through the object to be imaged is once reflected to the first plane mirror by the beam splitter; The beam is transmitted to the third plane mirror once by the beam splitter; the beam transmitted once is reflected by the third plane mirror, the second plane mirror and the first plane mirror and enters the beam splitter for secondary transmission; the second reflected beam merges with the first reflected beam The interference occurs at the image acquisition module; the image acquisition module generates a hologram of the object to be imaged. The holographic imaging device of the present invention can reduce shot noise and parasitic interference fringes in the hologram.

Description

technical field [0001] The invention relates to the technical field of holographic imaging, in particular to a holographic imaging device. Background technique [0002] Holographic technology has broad application prospects in the research fields of digital holographic microscopy, three-dimensional topography measurement, image recognition, image anti-counterfeiting, image encryption, medical diagnosis and three-dimensional tomography. Since the hologram records the wavefront information of the measured object, and according to the hologram, the three-dimensional parameters of the measured object can be obtained by using the phase unwrapping algorithm, so the holography technology has attracted much attention in the field of digital holographic microscopy. However, the traditional holographic imaging technology uses a laser light source, and the generated hologram has shot noise and spurious interference fringes, and the resolution is low. SUMMARY OF THE INVENTION [0003...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03H1/04G03H1/00G02B5/18
CPCG03H1/0443G03H1/0005G02B5/18G03H2001/005G02B2005/1804
Inventor 李保生施春林张万斌
Owner HEFEI UNIV OF TECH