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Single-spectrometer multi-light-beam optical coherence tomography imager

An optical coherence tomography and spectrometer technology, applied in medical science, sensors, diagnostic recording/measurement, etc., can solve problems such as image acquisition speed limitations, improve scanning speed and axial resolution, and save costs.

Pending Publication Date: 2019-12-17
南京波斯泰克光电科技有限公司
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the image acquisition speed of a typical SD-OCT is limited by the speed of the linear array detector in the spectrometer

Method used

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  • Single-spectrometer multi-light-beam optical coherence tomography imager
  • Single-spectrometer multi-light-beam optical coherence tomography imager

Examples

Experimental program
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Embodiment 1

[0033] Such as figure 2 As shown, a single-spectrometer multi-beam optical coherence tomography imager includes two broadband light sources 201 and 202, two three-port circulators 211 and 212, a first optical fiber array 220, an interference beam splitter 230, a reference arm 240, Sample arm 250 , second fiber optic array 264 , spectrometer 260 and image acquisition device 270 .

[0034] The spectral ranges of the light beams output by the light sources 201 and 202 do not overlap with each other. When the number of light sources increases to N (N>2), the present invention is also applicable.

[0035] The three-port circulators 211 and 212 respectively connect the outputs of the light sources 201 and 202 to the input of the first optical fiber array 220 .

[0036] All the fibers in the first fiber array 220 are arranged in parallel, the fiber pinholes are arranged in a straight line, and the distance between two adjacent fiber pinholes is equal (d). Fiber arrays can also be...

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Abstract

The invention discloses a single-spectrometer multi-light-beam optical coherence tomography imager. The single-spectrometer multi-light-beam optical coherence tomography imager comprises N broadband light sources, N three-port circulators corresponding to the broadband light sources one to one, a first optical fiber array, an interference splitter, a reference arm, a sample arm, a spectrometer, asecond optical fiber array and an image acquisition device. According to the single-spectrometer multi-light-beam optical coherence tomography imager, the number N of light beams irradiating samples is increased to increase the scanning speed; each light beam comes from the separate corresponding light source, and the spectral ranges of the light sources do not coincide; and only one spectrometeris needed to complete signal collection of all the light beams, and thus the cost is saved.

Description

technical field [0001] The invention belongs to optical imaging technology, in particular to a single-spectrometer multi-beam optical coherence tomography imager. Background technique [0002] Optical coherence tomography (OCT) is an emerging optical imaging technique. It forms high-resolution cross-sectional images of biological tissues in a non-invasive manner and at extremely high speed. Since the technology came out in 1991, it has had a significant impact on clinical diagnosis and medical research. In the past 10 years, more than 20 million patients have been the beneficiaries of OCT imaging technology every year. However, there are two problems in the existing OCT. First, due to the movement of the living tissue to be measured, OCT is required to scan a large tissue range in a very short time. The scanning speed of the existing OCT equipment seriously hinders this effective diagnostic technology. Second, the axial resolution of existing OCT equipment is limited (5-1...

Claims

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Application Information

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IPC IPC(8): A61B5/00
CPCA61B5/0066
Inventor 刘海军苗丛
Owner 南京波斯泰克光电科技有限公司