一种照明光路与成像光路共口径的超细硬性内窥镜

The ultra-thin rigid endoscope, designed with the illumination and imaging optical paths sharing the same aperture, uses a cold light source and a cubic beam splitter to solve the problems of large outer diameter and high cost of traditional endoscopes, achieving a finer outer diameter and higher resolution imaging effect, suitable for industrial and surgical equipment.

CN116990955BActive Publication Date: 2026-07-17CHANGCHUN UNIV OF SCI & TECH +1

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHANGCHUN UNIV OF SCI & TECH
Filing Date
2023-08-11
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Traditional microfiber endoscopes suffer from large outer diameter and high cost, making it difficult to meet the needs of observation and detection with small aperture, large field of view, and high resolution.

Method used

The endoscope adopts a design where the illumination and imaging optical paths share the same aperture, uses a cold light source beam for illumination, replaces the dual-channel steel tube with a single-channel steel tube, and achieves a shared aperture for the optical paths through a cubic beam splitter. Combined with the objective lens group, relay system, and eyepiece group, the lens parameters are optimized to reduce the outer diameter of the endoscope.

Benefits of technology

It achieves a smaller outer diameter and higher cost-effectiveness of endoscopes, with imaging quality reaching the diffraction limit, meeting the needs of industrial deep hole visualization and miniaturization of surgical equipment, and providing good field of view and clear images.

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Abstract

本发明公开了一种照明光路与成像光路共口径的超细硬性内窥镜,包括外壳、冷光源、单通道钢管以及光学系统,光学系统包括物镜组、中继系统、立方分光棱镜以及目镜组;物镜组、中继系统以及目镜组依次设置在单通道钢管内;立方分光棱镜设置在中继系统内;冷光源通过导光束接入单通道钢管的导光口进行照明,照明光线经过立方分光棱镜后依次经过中继系统、物镜组后传至物面上,物的反射光线依次经过物镜组、中继系统、立方分光棱镜、目镜组后被像面接收成像。本发明使用冷光源,消除了光纤束对外径的限制,将双通道钢管替换成单通道钢管,通过分光棱镜将照明光路与成像光路进行共口径设计,使内窥镜口径小于1.2mm。
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