Miniature bifocus objective lens probe

Abstract

The invention relates to a miniature bifocus objective lens probe for a confocal endoscopic microscope, belonging to the technical field of optics. The miniature bifocus objective lens probe comprises a miniature bifocus microobjective group and an imaging optic fiber bundle, wherein the imaging optic fiber bundle is arranged in front of the miniature bifocus microobjective group. The pupil of the miniature bifocus microobjective group is at infinity, has a bifocus imaging capability and can be used for simultaneously imaging a superficial layer and a deep layer of a sample. The numerical aperture of the miniature bifocus microobjective group at the optical fiber bundle end is matched with that of single optical fiber of the imaging optical fiber bundle. According to the miniature bifocus objective lens probe, the size is limited within a range that the miniature bifocus objective lens probe can enter the human body through a conventional endoscope working channel, light is focused on two focal planes with different depths, and fluorescent light generated by the focal planes is collected and then returned into a confocal endoscopic imaging system.

Description

technical field [0001] The invention relates to a device in the field of optical technology, in particular to a miniature bifocal objective lens probe suitable for confocal endoscopes. Background technique [0002] In my country, the morbidity and mortality of gastrointestinal tumors rank among the forefront of malignant tumors, and early diagnosis can effectively improve the survival rate. Simultaneously detecting the morphology of mucosal surface cells and deep microvascular structures and obtaining histological imaging results can help in the early diagnosis and classification of gastrointestinal tumors. Confocal endoscopic microscopy is one of the latest endoscopic imaging technologies. It can perform in vivo high-resolution imaging during ordinary endoscopic examination, obtain real-time histological imaging results of the mucosa, and provide doctors with clinical diagnosis and cancer prognosis. provide help. The micro-objective probe is one of the key technologies of...

AI Technical Summary

Problems solved by technology

"The disadvantages are as follows: 1. The outer diameter of the design is 7 mm, which cannot enter the human body through the working channel of a conventional endoscope; 2. The probe has no axial scanning ability, and cannot simultaneously analyze the cell morphology of the surface layer of the gastric mucosa and the deep glandular tissue. imaging

Images