Zoom endoscopic optical system
By employing a combination of a front fixed lens group, a zoom lens group, and a compensation lens group in an industrial endoscope, and combining it with an aspherical lens design, the problems of limited focal length range and reduced imaging quality in existing technologies have been solved. This has enabled high zoom ratio imaging of small-diameter pipes, improving the detection effect of minute defects inside pipes.
CN224399669UActive Publication Date: 2026-06-23HANGZHOU PHOTOGRAPHIC MASCH RES INST CO LTD
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Patent Information
- Application Number
- CN202521324096.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-26
- Publication Date
- 2026-06-23
- Estimated Expiration
- 2035-06-26
AI Technical Summary
Technical Problem
Existing industrial endoscopes have limited focal length range, unsatisfactory field of view, and decreased image quality during zooming. Furthermore, their optical systems are relatively long, making it difficult to effectively detect minute defects inside pipes.
Method used
It adopts a combination structure of front fixed lens group, zoom lens group and compensation lens group. The lens group moves along the optical axis. By combining the design of aspherical lens and spherical lens, the length of optical system is shortened and the imaging quality is improved.
Benefits of technology
It achieves high zoom ratio small-diameter imaging, improves the detection effect of tiny defects inside pipes, and enhances imaging quality and edge accuracy.
✦ Generated by Eureka AI based on patent content.
Abstract
The zoom endoscopic optical system sequentially comprises a front fixed lens group, a zoom lens group and a compensation lens group from an object side to an image side along an optical axis, and the front fixed lens group comprises a first lens, a second lens and a third lens; the position of the zoom lens group is adjustable, and the zoom lens group comprises a fourth lens and a fifth lens; the position of the compensation lens group is adjustable, and the compensation lens group comprises a sixth lens, a seventh lens, an eighth lens and a ninth lens; the ninth lens is an aspheric lens. The first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, the seventh lens and the eighth lens are spherical lenses. Compared with the prior art, by arranging the eight spherical lenses and the aspherical lens, the length of the optical system is reduced, the diameter of the lenses is shortened, meanwhile, the correction of the imaging quality is assisted, the edge precision is guaranteed by adopting the aspherical lens, and the imaging effect of detecting tiny defects in the pipeline is improved.
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