Endoscopic imaging systems and methods based on correlated imaging and improved optical fiber bundles

Abstract

The invention provides an endoscope imaging system and method based on correlated imaging and an improved optical fiber bundle. The system comprises a laser transmitter, a spatial light modulator, a computer, three convex lenses, the optical fiber bundle and a barrel detector. The laser transmitter is used for generating laser; the spatial light modulator is used for modulating the laser to form different speckle signals, and a modulation matrix is generated and stored by the computer and controls the spatial light modulator to modulate the laser; the three convex lenses play a role in transmitting or focusing laser in parallel; the barrel detector is used for receiving the total light intensity of an object light field on a light path and converting the light intensity into an electric signal; the computer receives the electric signal transmitted by the barrel detector and performs correlation calculation with the modulation matrix to obtain an image; according to the method, correlated imaging is applied to endoscope imaging; compared with a traditional endoscope imaging technology, the correlated imaging mode has the advantages of being large in view field and free of contact; the advantages of the traditional endoscope imaging system and the advantages of a correlated imaging system are combined, and the system imaging definition is improved.

Description

technical field [0001] The invention relates to an optical imaging system, in particular to an endoscope imaging system and method. Background technique [0002] As a representative of medical device visualization, fiber optic endoscopic imaging technology is widely used in the medical field. Doctors can observe the lesions of patients' tissues and organs through endoscopes to help doctors make diagnoses. As an observation instrument, the endoscope can also be used as an auxiliary device for surgery and treatment. Combining the endoscope with an optical fiber temperature sensor can accurately observe the temperature measurement position and tissue conditions, and can be used for radiofrequency tumor resection and ablation, etc. Operation. At the same time, fiber optic endoscope imaging technology is also widely used in other fields. For example, in the field of engineering technology, it can be used to detect the interior of machinery and help engineers find the cause of fa...

AI Technical Summary

Problems solved by technology

At the same time, for traditional fiber optic endoscope imaging, the front end of the fiber needs to be in contact with the target object, so the detection field of view is small, and it can only detect the imaging range smaller than the cross-sectional area of ​​the fiber bundle

[0004] A single multimode fiber can transmit image signals by calculating the point spread function of the fiber and modulating the wave front, but in the actual endoscopic imaging process, the bending and movement of the fiber will seriously affect the phase of signal transmission. Affected, the phase modulation needs to be re-performed, so a single multimode fiber cannot be applied to real-time imaging of the endoscope

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