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Objective lens for endoscope and endoscope

A technology for endoscopes and endoscopes, which is applied to the field of objective lenses for endoscopes and endoscopes, can solve problems such as the inability to ensure the miniaturization of endoscope lenses, achieve the purpose and advantages of being simple and easy to understand, and improve imaging quality effect

Active Publication Date: 2022-04-22
ZHEJIANG HEALNOC TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In this embodiment, an objective lens and an endoscope for an endoscope are provided to solve the problem in the related art that the miniaturization of the lens for the endoscope cannot be ensured while improving the imaging quality

Method used

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  • Objective lens for endoscope and endoscope
  • Objective lens for endoscope and endoscope
  • Objective lens for endoscope and endoscope

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Embodiment Construction

[0057]In order to understand the purpose, technical solution and advantages of the present application more clearly, the present application is described and illustrated below in conjunction with the accompanying drawings and embodiments.

[0058] Unless otherwise defined, the technical terms or scientific terms involved in the application shall have the general meanings understood by those skilled in the technical field to which the application belongs. In this application, words like "a", "an", "an", "the", "these" and the like do not denote quantitative limitations, and they may be singular or plural. The terms "comprising", "comprising", "having" and any variants thereof referred to in this application are intended to cover non-exclusive inclusion; for example, processes, methods and The system, product, or apparatus is not limited to the steps or modules (units) listed, but may include steps or modules (units) that are not listed, or may include other steps or modules tha...

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Abstract

The invention relates to an objective lens for an endoscope and the endoscope. The objective lens for the endoscope is sequentially provided with a diaphragm, a positive focal power lens group, a negative focal power lens and a first positive focal power lens from an object side to an image side, the objective lens for the endoscope meets the following conditions: 0.38 < = f4 / TTL < = 0.5, f4 is the focal length of the first positive focal power lens, and TTL is the total optical length of the objective lens for the endoscope. According to the invention, the imaging quality is improved, and meanwhile, the miniaturization of the lens for the endoscope is ensured.

Description

technical field [0001] The present application relates to the technical field of optical imaging, in particular to an objective lens for an endoscope and an endoscope. Background technique [0002] Thanks to the rapid development of smart medical care in recent years, optical lenses have been used more and more in the medical field, especially in the field of medical endoscopy, where the pixel requirements for optical imaging lenses are getting higher and higher. At the same time, more and more companies are attracting more and more research on ultra-high-definition, 4K and other endoscopes, expecting to develop products with higher pixels and smaller sizes. [0003] In the existing optical zoom lens for endoscopes, in order to improve the image quality, more optical lenses are used, resulting in a larger total length of the lens. It can be seen that the existing optical zoom lenses for endoscopes, while improving the imaging quality, the size of the entire lens is also inc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B15/173A61B1/00
CPCG02B15/173A61B1/00163
Inventor 吴沛姚卫忠蔡显兵肖贡强
Owner ZHEJIANG HEALNOC TECH CO LTD