A motion-adaptive co-channel oct endoscopy system

Abstract

The invention discloses a motion adaptive common-path OCT endoscope system. The system comprises an infrared source for irradiating a sample, a guiding light source, a wavelength division multiplexing coupler, a common-path OCT endoscope probe, a detector and a host, wherein a light beam emitted from the guiding light source and the light beam of the infrared source are joined to irradiate the sample; the wavelength division multiplexing coupler is used for joining the light beam of the infrared source and the beam of the guiding light source; the common-path OCT endoscope probe is used for performing real-time optical imaging on an observed sample; the detector is used for converting an optical signal into an electric signal; and the host is used for sending out an instruction to control the common-path OCT endoscope probe to move. The motion adaptive common-path OCT endoscope system is adopted to solve the technical problems that the quality of an interference signal is reduced since two paths of uncommon-path OCT endoscope system are in different environments and are interfered by chromatic dispersion, temperature and other factors; optical path fit of a sample arm and a reference arm is required before imaging of an existing common-path OCT endoscope system, the process is complex, and imaging is failed if a certain optical path range is exceeded; and sharing with an existing endoscope system cannot be realized.

Description

technical field [0001] The invention relates to the field of medical equipment, in particular to a motion adaptive co-channel OCT endoscopic system. Background technique [0002] As a high-resolution biomedical imaging method, optical coherence tomography (OCT) solves the problem of low resolution and difficult Technical problems in finding minimal lesions. [0003] The principle of optical coherence tomography technology is based on low-coherence interference technology, combined with the advantages of heterodyne detection and confocal imaging, after the acquisition and processing of interference signals, the three-dimensional tomographic image of the sample is restored, reflecting the internal structure and scattering coefficient of biological tissues And other important information, the imaging depth is 3-5mm, covering the lesion area, the resolution is as high as 1-10um, and it has the advantages of non-invasive and radiation-free, and has good application prospects and...

AI Technical Summary

Problems solved by technology

[0008] (2) The existing common-channel OCT endoscopic system needs to match the optical path of the sample arm and the reference arm before imaging. This process is relatively complicated, and imaging cannot be performed after exceeding a certain optical path range. Probes of different lengths need to be replaced, too many devices will affect the stability of the system;

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