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Objective lens for endoscope and endoscope

An endoscope and endoscope technology, which is applied to the field of endoscope objective lens and endoscope, can solve the problem that the miniaturization of the endoscope lens cannot be guaranteed, achieve the purpose and the advantages are simple and easy to understand, and improve the imaging quality effect

Active Publication Date: 2022-07-29
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]For a clearer understanding of the purpose, technical solutions and advantages of the present application, the present application is described and illustrated below with reference to the accompanying drawings and embodiments.

[0058] Unless otherwise defined, the technical or scientific terms involved in this application shall have the general meaning understood by a person with ordinary skills in the technical field to which this application belongs. Words like "a", "an", "an", "the", "these" and the like in this application do not denote quantitative limitations, and they may be singular or plural. The terms "comprising", "comprising", "having" and any variations thereof referred to in this application are intended to cover non-exclusive inclusion; for example, processes, methods and The system, product or device is not limited to the listed steps or modules (units), but may include unlisted steps or modules (units), or may include other steps or modules inherent to ...

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Abstract

The present application relates to an objective lens for an endoscope and an endoscope. The objective lens for an endoscope is sequentially provided with a diaphragm, a lens group with positive refractive power, a lens with negative refractive power and a first positive refractive power from the object side to the image side. Lenses; objective lenses for endoscopes meet the following conditions: 0.38≤|f 4 / TTL|≤0.5, where f 4 is the focal length of the first positive power lens, and TTL is the total optical length of the objective lens for endoscope. Through the present application, the miniaturization of the lens for endoscope is achieved while improving the imaging quality.

Description

technical field [0001] The present application relates to the technical field of optical imaging, and 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, the pixel requirements of optical imaging lenses are getting higher and higher. At the same time, it also attracts more and more companies to invest more research on endoscopes such as ultra-high definition and 4K, expecting to develop products with higher pixels and smaller size. [0003] In order to improve the imaging quality of the existing optical zoom lens for endoscope, many optical lenses are used, resulting in a larger total length of the lens. It can be seen that the existing optical zoom lens for endoscope improves the image quality and at the same time increases the size of the entir...

Claims

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Application Information

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Patent Type & Authority Patents(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