Sweep frequency optical coherent imaging system based on optical calculation

An optical coherent imaging and optical computing technology, applied in the field of biomedical photonics, can solve the problems of difficulty in realizing high-resolution three-dimensional real-time imaging, large size, etc., and achieve the effect of improving the imaging speed of the system, the imaging speed is fast, and the work is stable.

Active Publication Date: 2015-06-17
TSINGHUA UNIV
View PDF5 Cites 16 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, frequency-sweeping light sources with scanning speeds at the MHz level have already appeared, but in the process of image data processing, the amount of calculation of the inverse Fourier transform is too large for the central process

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Sweep frequency optical coherent imaging system based on optical calculation
  • Sweep frequency optical coherent imaging system based on optical calculation
  • Sweep frequency optical coherent imaging system based on optical calculation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] The present invention will be described in detail below in conjunction with the accompanying drawings. However, it should be understood that the accompanying drawings are provided only for better understanding of the present invention, and they should not be construed as limiting the present invention. In the description of the present invention, it should be understood that the terms "first", "second" and so on are only used for the purpose of description, and should not be understood as indicating or implying relative importance.

[0020] Suppose an optical signal of finite length (for example: an optical pulse) passes through an ideal dispersion medium with a large enough dispersion (only second-order dispersion, and the second-order dispersion coefficient does not change with wavelength), because light of different wavelengths in the dispersion medium In the presence of a speed difference, the time-domain shape of the output light will approximate its spectral shape...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to a sweep frequency optical coherent imaging system based on optical calculation. The system is characterized by comprising a sweep frequency interference system and an optical calculation system; the sweep frequency interference system comprises a pulse laser, a sweep frequency optical device, an OCT interferometer and a photoelectric detector; the optical calculation system comprises a radio frequency amplifier, an optical intensity modulator, a broadband light source, a dispersion device, a Mach-Zehnder interferometer, a balance detector, an envelope detector, a data acquisition card and a computer. Real-time Fourier transformation of optical frequency domain signals is achieved, due to the fact that Fourier transformation can process image data of the sweep frequency optical coherent imaging system in time, the imaging speed of the system is extremely high, and the system can be widely applied to sweep frequency optical coherent imaging.

Description

technical field [0001] The invention relates to a swept source optical coherence imaging system (SS-OCT for short), in particular to a swept optical coherence imaging system based on optical calculation, which belongs to the field of biomedical photonics. Background technique [0002] At present, Optical Coherence Tomography (OCT) has been developed from traditional Time Domain-OCT (TD-OCT) to Frequency Domain Optical Coherence Tomography (Fourier Domain-OCT). FD-OCT). Among them, there are two types of FD-OCT: Spectral Optical Coherence Tomography (Spectral Domain-OCT, referred to as SD-OCT) based on CCD (Charge-coupled Device) spectrometer detection and frequency-sweeping optical coherence layer based on frequency-sweeping lasers Analysis (Swept Source-OCT, SS-OCT for short). Compared with other types of OCT, SS-OCT has both the fast imaging capability of spectral SD-OCT and the point detection advantages of time-domain OCT. [0003] In the existing SS-OCT, what the det...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): A61B5/00
CPCG01N21/4795
Inventor 薛平张晓霍天成王成铭陈天元廖文超艾盛楠章文欣谢睿程
Owner TSINGHUA UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap