Optical imaging system and endoscope
By designing an optimized optical imaging system, including a front-end objective lens group, a relay rod lens mechanism and a rear-end eyepiece group, the problem of traditional endoscopes needing to refocus when switching white light and fluorescence modes is solved, and confocal between white light and fluorescence modes is achieved, and inspection efficiency is improved.
CN119717247AActive Publication Date: 2025-03-28HANGZHOU HAIKANG HUIYING TECH CO LTD
7 Cites 1 Cited by
Patent Information
- Application Number
- CN202411795138.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-06
- Publication Date
- 2025-03-28
- Estimated Expiration
- 2044-12-06
AI Technical Summary
Technical Problem
Traditional white-light endoscopes need to be refocused when switching between white-light and fluorescence modes, affecting the work efficiency of medical staff.
Method used
An optical imaging system is designed, including a front-end objective lens group, a relay rod lens mechanism and a rear-end eyepiece group. By optimizing the structure of the lens group and rod lens group, the defocus amount between the white light and the fluorescence mode is not greater than 0.02mm.
Benefits of technology
Confocal between white light and fluorescence modes is achieved, reducing the operating frequency of medical staff and improving the inspection efficiency of lesions in the lesion site.
✦ Generated by Eureka AI based on patent content.
Abstract
The invention discloses an optical imaging system and an endoscope. The optical imaging system comprises a front-end objective lens group, a relay rod lens mechanism and a rear-end eyepiece group which are sequentially arranged from the object side to the image side; the relay rod lens mechanism comprises an odd number of rod lens groups, and the odd number of rod lens groups are sequentially arranged along the optical axis from the object side to the image side; the rear-end eyepiece group comprises an eighth lens, a ninth lens and an exit pupil which are sequentially arranged along the optical axis from the object side to the image side, the eighth lens is a doublet lens, and the ninth lens is a biconvex symmetric lens; wherein the defocusing amount of the white light and the fluorescent light of the optical imaging system is not greater than 0.02 mm. According to the optical imaging system and the endoscope, the problem that refocusing is needed when the optical imaging system of the endoscope is switched between the white light mode and the fluorescent light mode can be solved.
Need to check novelty before this filing date? Find Prior Art