Endoscope objective lens zoom optical system

An optical system and endoscope technology, which is applied in the field of bifocal objective lens zoom optical system, can solve the problems that diagnosis and follow-up surgery cannot be performed at the same time, and endoscopic equipment is expensive
CN110873950AInactive Publication Date: 2020-03-10ZHEJIANG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ZHEJIANG UNIV
Publication Date
2020-03-10
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses an endoscope objective lens zoom optical system, which sequentially comprises a fixed lens group with negative focal power and a zoom lens group with positive focal power alongthe optical axis of the optical system from the object side to the image side, wherein the zoom lens group can change the focal length of the endoscope objective lens zoom optical system by moving along the optical axis. The invention relates to a high-performance endoscope objective lens optical system which has a large enough magnification factor and can perform 500-1000-time microscopic magnification observation under an endoscope. During common observation, the field angle of the endoscope lens can reach 140 degrees, and accurate imaging diagnosis can be carried out on diseased tissues ofa human body.
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Description

technical field

[0001] The invention relates to an endoscope objective lens zoom optical system, in particular to a bifocal objective lens zoom optical system applied to an endoscope for medical diagnosis. Background technique

[0002] As a clinical application of high-performance endoscopes, there are dual functional requirements for microscopic magnification observation and large-field high-definition imaging. Especially for the observation and diagnosis of early diseases inside the human body, endoscopes integrating magnification observation and high-definition imaging have been more and more widely used.

[0003] The gold standard for the diagnosis of gastrointestinal tumors is electronic endoscopy, which uses electronic endoscopy to observe mucosal images, and conduct sampling, staining, and pathological diagnosis of abnormal areas. This method has disadvantages such as missed detection, diffusion, and time-consuming.

[0004] How to perform real-time pathological diag...

Claims

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