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Polarization frequency domain optical coherence tomography system based on single detector

A technology of optical coherence tomography and single detector, which is applied in the direction of material analysis, instruments, and measuring devices through optical means, which can solve problems such as asynchronous, avoid time asynchronous, simplify system structure, and improve image quality Effect

Active Publication Date: 2014-05-14
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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Problems solved by technology

[0004] In view of the above problems, the object of the present invention is to provide a polarization frequency domain optical coherence tomography system based on a single detector. out-of-sync problems, while improving the signal-to-noise ratio of the system and improving image quality

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  • Polarization frequency domain optical coherence tomography system based on single detector
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  • Polarization frequency domain optical coherence tomography system based on single detector

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Embodiment Construction

[0025] The present invention will be further described below in conjunction with the examples and drawings, but the examples should not limit the protection scope of the present invention.

[0026] figure 1It is a schematic structural diagram of the polarization frequency domain optical coherence tomography system based on a single detector of the present invention. It can be seen from the figure that the polarization frequency-domain optical coherence tomography system based on a single detector in the present invention includes a low-coherence light source 1, a first collimator 2, a polarizer 3, a Michelson interferometer 4, and a polarization beam splitter 5 , the second collimator 6, the first optical fiber 7, the third collimator 8, the fourth collimator 9, the second optical fiber 10, the fifth collimator 11, the grating 12, the cylindrical lens 13 and the detector 14 . The light emitted by the low-coherence light source 1 passes through the first collimator 2 and the ...

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Abstract

The invention discloses a polarization frequency domain optical coherence tomography system based on a single detector. The polarization frequency domain optical coherence tomography system based on the single detector comprises a low-coherence optical source, a first collimator, a polarizer, a michelson interferometer, a polarization beam splitter, a second collimator, a first optical fiber, a third collimator, a fourth collimator, a second optical fiber, a fifth collimator, a grating, a cylindrical lens and a detector. According to the invention, the single detector is adopted, so that the system structure is simplified; the problem of time asynchronism when two detectors collect signals is prevented; meanwhile, two paths of light radiates the grating at the incident angle with highest diffraction efficiency; the improvement of the diffraction efficiency increases the signal to noise ratio of the system, and the image quality is improved.

Description

technical field [0001] The present invention relates to a Polarization-sensitive Fourier Domain Optical Coherence Tomography (PS-FD-OCT) system, in particular to a polarization-sensitive Fourier Domain Optical Coherence Tomography system based on a single detector. Background technique [0002] Optical coherence tomography (OCT) is a technology developed in the past two decades that can perform tomographic imaging of biological tissues, and has the characteristics of high resolution and non-invasiveness. In traditional OCT, it is believed that the characteristics of the light reflected back to the detector at different depths of the sample are different, and this principle is used to obtain structural information inside the sample. But the polarization of light exists in many biological tissues. When a lesion occurs somewhere in the tissue, the reflectance and birefringence of the tissue will change, thereby changing the intensity and polarization state of the reflected lig...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/23
Inventor 陈艳李中梁王向朝南楠郭昕王瑄张行
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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