Dual-wavelength polarization multiplexing digital holographic imaging system and method

A technology of polarization multiplexing and digital holography, which can be used in instruments and other directions to solve problems such as difficulty in realizing real-time reconstruction imaging.

Active Publication Date: 2018-01-19
BEIJING UNIV OF TECH
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Problems solved by technology

Moreover, it is necessary to perform multiple adjustments for the experimental results of a single recording to obtain more accurate phase information of the object to be recorded, and it is difficult to achieve real-time reconstruction imaging

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  • Dual-wavelength polarization multiplexing digital holographic imaging system and method
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  • Dual-wavelength polarization multiplexing digital holographic imaging system and method

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Embodiment Construction

[0035] Typical embodiments of the dual-wavelength polarization multiplexing digital holographic imaging system and method of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0036] According to the dual-wavelength polarization multiplexing digital holographic recording unit of the first exemplary embodiment of the dual-wavelength polarization multiplexing digital holographic imaging system of the present invention, the dual-wavelength polarization multiplexing digital holographic recording optical path is a transmission optical path. like figure 1 As shown, it includes: the first laser 1 uses a red light source with a wavelength of 671nm, and the second laser 2 uses a red light source with a wavelength of 656nm. The first wavelength beam emitted by the first laser 1 is reflecte...

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Abstract

A dual-wavelength polarization multiplexing digital holographic imaging system and method includes a dual-wavelength polarization multiplexing digital holographic recording unit and a dual-wavelength polarization multiplexing digital holographic imaging reconstruction unit. A dual-wavelength polarization multiplexing digital holographic recording unit includes a dual-wavelength polarization multiplexing digital holographic recording optical circuit and method. The dual-wavelength polarization multiplexing digital holographic recording unit is used for recording digital holograms of two different wavelengths. A dual-wavelength polarization multiplexing digital holographic imaging reconstruction unit includes a dual-wavelength polarization multiplexing digital holographic imaging reconstruction process and method, and the dual-wavelength polarization multiplexing digital holographic imaging reconstruction unit is configured for recording recorded data. The digital hologram is reconstructed by diffraction imaging to realize the three-dimensional imaging of the real phase information of the original object.

Description

technical field [0001] The invention relates to digital holographic imaging and belongs to the field of real-time three-dimensional digital imaging. More specifically, the invention relates to a dual-wavelength polarization multiplexing digital holographic imaging system and method. Background technique [0002] Digital holography is a method based on holography, using such as CCD or CMOS as an image collector instead of holographic recording materials (holographic dry plate, etc.) to record digital holograms, and save the digital holograms in the computer. The diffraction propagation process realizes the reconstruction imaging of digital hologram. As a new type of three-dimensional digital imaging technology, digital holography involves digitization in its recording and reconstructing imaging processes. [0003] The recording optical path of off-axis digital holography usually adopts a Mach-Zehnder interferometer system to realize the recording of off-axis digital hologram...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03H1/06
Inventor 王喆江竹青陈依菲
Owner BEIJING UNIV OF TECH
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