Real-time imaging optical coherent chromatography skin diagnostic device

Abstract

The invention discloses real-time imaging skin diagnosis equipment by optical coherence tomography, and belongs to the field of optical imaging equipment. The equipment comprises a power supply, a light source control circuit, a light source, an indicating light source, a first optical fiber coupler, a second optical fiber coupler, an OCT probe, an optical delay line, a photo detector, a signal processing and control circuit, and a computation processing and display device. The imaging equipment takes the optical coherence tomography (OCT probe) as a core, processes signals rapidly by the signal processing and control circuit, and improves the imaging speed and image resolution by cooperating with the computation processing and display device; designs of a wideband light source and a duckbill-shaped probe applicable to skin scanning cause the equipment to be applicable to scanning human skin, and real-time and rapid imaging can be realized by cooperation of the signal processing and control circuit with the computation processing and display device.

Description

technical field [0001] The invention relates to optical coherence tomography diagnostic equipment, in particular to a skin diagnostic equipment suitable for fast optical tomography scanning and real-time imaging of the sectioned tissue structure of human skin. Background technique [0002] Optical coherence tomography (OCT) is a new technology developed in recent years. It uses low-coherence measurement as the principle and uses optical superheterodyne method to detect the backscattered light from the sample under test. The resolution is on the order of microns, which is especially suitable for opaque biological samples with high scattering properties. Compared with the existing tomographic imaging techniques (X-ray CT, nuclear magnetic resonance CT and ultrasonic CT), OCT has non-contact, non-destructive, imaging advantages such as clarity. OCT technology is widely used in the medical field, and can be used for early diagnosis of some diseases in ophthalmology, dermatology...

AI Technical Summary

Problems solved by technology

[0004] Existing tomographic imaging equipment (X-ray CT, nuclear magnetic resonance CT and ultrasonic CT) has low resolution and will cause certain damage to human tissue, so it cannot be applied to the scanning diagnosis of the skin;

[0005] Moreover, due to the limitation of the light transmittance of the diagnostic light of the existing tomography equipment, and the skin of different races and different positions will have different light transmittance, there are different requirements for the detection depth, which also leads to the existing tomography. Imaging equipment cannot achieve accurate and real-time imaging of the skin to complete scan diagnosis;

[0006] The focal length of the detection lens of the existing tomographic imaging equipment also has the problem of difficult positioning on the non-planar surface skin of the human body; and the image processing capability of the existing tomographic imaging equipment cannot meet the needs when processing the microscopic tissue structure of the skin High-speed signal processing and high-speed transmission requirements

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