A fluorescence endoscope system focal plane uniformity coefficient testing device

By designing a focal plane consistency coefficient testing device for a fluorescence cavity mirror system, the problem of insufficient evaluation of focal plane consistency of the fluorescence cavity mirror system was solved, and high-precision focal plane consistency coefficient measurement and optical performance comparison evaluation were achieved.

CN224456161UActive Publication Date: 2026-07-03THE FIRST AFFILIATED HOSPITAL ZHEJIANG UNIV COLLEGE OF MEDICINE
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
THE FIRST AFFILIATED HOSPITAL ZHEJIANG UNIV COLLEGE OF MEDICINE
Filing Date
2025-05-30
Publication Date
2026-07-03

AI Technical Summary

Technical Problem

The lack of dedicated equipment for evaluating the focal plane consistency coefficient of fluorescence endoscope systems has affected the assessment of the focal plane consistency of fluorescence endoscope systems.

Method used

A focal plane consistency coefficient testing device for a fluorescence endoscope system was designed, including a fixed plate, a worktable, a transmission light box, a camera endoscope, and an ISO 12233 standard resolution test chart. The device achieves precise positioning of the endoscope and the test chart through a combination of lifting and translating movements of the lifting and translating stages. Combined with the camera focusing knob, the slope of the fluorescent and white light focal planes is calculated to evaluate the focal plane consistency coefficient.

Benefits of technology

It enables high-precision measurement of the focal plane consistency coefficient of fluorescence endoscope systems, supporting manufacturers and medical institutions to conduct comparative evaluations of the optical performance of fluorescence endoscope systems of different brands, specifications, and years of service.

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Abstract

This invention relates to a focal plane consistency coefficient testing device for a fluorescence endoscopy system. It includes a fixed plate, a worktable mounted on the fixed plate, and a transmission light box. An endoscope with a camera is mounted on the worktable via a connector. The camera is secured to the endoscope with a clip. A focusing knob is provided on the camera for adjusting image sharpness. The endoscope is positioned directly opposite the transmission light box, and a test card is mounted above the transmission light box. This invention provides a focal plane consistency coefficient testing device for a fluorescence endoscopy system, which boasts advantages such as simple and reasonable structure, practicality, and convenience.
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