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Fisheye endoscope optical system with ultra-wide angle

An optical system and endoscope technology, applied in the field of endoscope, can solve problems such as affecting the use effect of endoscope, and achieve the effect of improving work efficiency

Inactive Publication Date: 2018-03-02
ZHONGSHAN UVATA OPTICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, the image quality of the lens affects the use effect of the endoscope.

Method used

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  • Fisheye endoscope optical system with ultra-wide angle
  • Fisheye endoscope optical system with ultra-wide angle
  • Fisheye endoscope optical system with ultra-wide angle

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Embodiment Construction

[0043] In order to make the technical problems, technical solutions and beneficial effects solved by the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not intended to limit the present application.

[0044] The application is achieved through the following technical solutions:

[0045] Such as Figure 1 to Figure 6 As shown, the optical system of the fisheye endoscope with ultra-wide angle includes: the first lens 1, the second lens 2, the third lens 3, the fourth lens 4, and the fifth lens in sequence along the optical axis from the object plane to the image plane 5. The sixth lens 6, the seventh lens 7, the eighth lens 8, and the ninth lens 9; characterized in that,

[0046] The object side of the first lens 1 is convex, and the image sid...

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Abstract

The application relates to an endoscope, and more particularly to a fisheye endoscope optical system with an ultra-wide angle. The fisheye endoscope optical system consists along the optical axis froman object surface to an image surface of: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, an eighth lens, and a ninth lens. Through the proper matching among the first to ninth lenses, the angle of field of view of the lens can reach 230 degrees by utilizing the characteristics of the structure of each lens, a wider range of images can be observed through the imaging on the CCD or CMOS on the image surface, the observation and shooting can be performed in a narrow internal space without moving the lenses frequently to change the angle of view, and the work efficiency is improved.

Description

【Technical field】 [0001] The present application relates to endoscopes, in particular to a fisheye endoscope optical system with an ultra-wide angle. 【Background technique】 [0002] Endoscope is a kind of medical device commonly used in the medical field at present, which is composed of a bendable part, a light source and a lens. When in use, the endoscope is introduced into the lesion to be inspected, and the rear end is connected to a photoelectric sensor CCD or CMOS, and the image information of the lesion is imaged by the lens and imaged on the photoelectric sensor for the doctor to intuitively distinguish the change of the lesion And perform precise surgery directly in the visible state. Therefore, the image quality of the lens affects the use effect of the endoscope. For the lens, it is mainly the field of view, resolution and illumination factors. With the development of fisheye lens and the emergence of high-pixel chips, it is beneficial to apply the super wide-ang...

Claims

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Application Information

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IPC IPC(8): G02B23/24G02B13/06G02B13/00
CPCG02B13/0015G02B13/06G02B23/243
Inventor 裴锐锐李沙江威况强华安峰博曾春燕
Owner ZHONGSHAN UVATA OPTICAL