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Spectral domain oct detection method based on segmented spectral optical path coding

A detection method and spectral technology, which is applied in the field of spectral domain OCT detection system based on segmented spectral optical path coding, can solve the problems of time loss, uneconomical, and limited system imaging speed, and achieve system stability, simple system structure, and improved The effect of image quality

Active Publication Date: 2015-12-09
ZHEJIANG UNIV
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Problems solved by technology

However, the switching process will bring time loss, which will limit the imaging speed of the system to a certain extent, and need to do image stitching processing in the later stage, which cannot meet the requirements of real-time imaging
Simultaneous imaging with two sets of spectrometers can also achieve the desired imaging depth, but it is not economical to build an additional set of spectrometers

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  • Spectral domain oct detection method based on segmented spectral optical path coding
  • Spectral domain oct detection method based on segmented spectral optical path coding
  • Spectral domain oct detection method based on segmented spectral optical path coding

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Embodiment Construction

[0025] Below in conjunction with accompanying drawing and embodiment example, the present invention will be further described:

[0026] Such as figure 1 , figure 2 As shown, the present invention is a spectral domain OCT detection system based on segmented spectral optical path coding, including a broadband light source 1, an optical isolator 2, a broadband fiber coupler 3, a first polarization controller 4, and a second polarization controller 5 , the sample arm 19, the reference arm 20 and the detection arm 21; the sample arm 19 includes the first collimating lens 6, the scanning galvanometer 7 and the first focusing lens 8; the reference arm 20 includes the second optical fiber collimator Device 10, dichroic mirror DM11, first plane mirror 12 and second plane mirror 13; described detection arm 21 includes a third fiber collimator 14, grating 15, second focusing lens 16, CCD detector 17 and computer 18;

[0027]The broadband light source 1 is connected to one port of the...

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Abstract

The invention discloses a spectral domain OCT detecting system and method based on segmented spectrum optical path coding. A dichroscope is arranged in a traditional reference arm, so that a light source spectrum is divided into two portions which arrive at a transmission light path and a reflection light path respectively. Due to the fact that the positions of plane mirrors in the transmission light path and the reflection light path are different, and the two portions of the spectrums cover different optical paths in the reference arm and interfere with returning light of two different depth sections in a sample. After the two portions of spectrum interference signals enter a detection arm, the spectrum interference signals are detected by pixel points in different regions of a CCD in a spectrometer, spectrum parallel obtaining is achieved on the non-aliasing condition. On the condition that the detection arm and a sample arm of spectrum domain OTC are not changed, a simple light splitting structure is additionally arranged in the reference arm, arrangement of different zero-optical-path positions in a sample and parallel detection of double reference arm spectrum domain OCT signals are achieved, and imaging range of the spectrum domain OCT is broadened.

Description

technical field [0001] The present invention relates to optical coherence tomography (Optical Coherence Tomography, OCT for short) technology, in particular to a spectral domain OCT detection system and method based on segmented spectral optical path coding. Background technique [0002] Optical coherence tomography (OCT) can perform non-contact, non-invasive, high-resolution in vivo imaging of internal tissue structures and physiological functions in vivo, and has a wide range of applications in the field of biomedical imaging. Especially in the field of ophthalmology, the application prospect of OCT is even greater. The common anterior segment OCT (AnteriorsegmentOCT, AS-OCT) can provide non-contact structural images of the anterior segment in the optical path in the static and dynamic state, and does not require stimulation. Indirect observation of corresponding changes in the observed eye by eliciting accommodation in the fellow eye has become an ideal tool for measuring...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B3/14A61B3/12
CPCA61B3/102
Inventor 丁志华倪秧沈毅赵晨杜持新吴兰李鹏
Owner ZHEJIANG UNIV
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