OCT probe used for optical path automatic calibration

Abstract

The invention discloses an OCT probe used for optical path automatic calibration. The OCT probe used for optical path automatic calibration comprises a grin-lens, one end of the grin-lens is provided with a refraction lens, the other end of the grin-lens is provided with a single-mode optical fiber, the side, far away from the refraction lens, of the refraction lens is provided with a sealing cap, the outside of the single-mode optical fiber is provided with a torque cable, the outsides of the grin-lens and the refraction lens are provided with high scattering rate heat shrink tubes, and the outsides of the high scattering rate heat shrink tubes are provided with protection sleeves. The high scattering rate heat shrink tubes are made of a heat shrinkable material PET, a small amount of optical scattering particles are doped in the PET material, the back scattering rate can be increased, thus the high scattering rate heat shrink tubes form a largest detectable peak of an image strength in an image signal, and the positions of a reference arm and a sample arm zero optical path difference can be easily identified. According to the OCT probe used for optical path automatic calibration, the mechanical strength of the OCT probe is improved, and the possibility that the OCT probe is used for a complex, narrow and curved diseased region is increased.

Description

technical field [0001] The invention belongs to the technical field of OCT probes, in particular to an OCT probe used for optical path automatic calibration. Background technique [0002] Optical coherence tomography (OCT) technology is a new biomedical optical imaging method, which has high resolution (axial resolution 5-10 μm, lateral resolution 20-40 μm), fast imaging speed, The signal-to-noise ratio is high, so it quickly became a hot spot in the field of medical imaging. Endoscopic optical coherence tomography requires the orderly cooperation of equipment and catheters to perform corresponding imaging operations and obtain correct and clear images. In order to obtain the interference signal, it is necessary to ensure that the optical distances of the sample arm and the reference arm of the optical interference device are approximately equal. Since the catheter length of the sample arm will vary slightly, it is necessary to implement the optical path adjustment functio...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide an OCT probe for automatic calibration of the optical path to solve the problems in the above-mentioned background technology that professional intervention and manual adjustment are required, the difficulty of using the system is high, and the accuracy of the system is reduced.

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