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Upper digestive tract electronic endoscope objective lens

An electronic endoscope and digestive tract technology, applied in the field of endoscopy, can solve the problems of large field of view, low resolution of the endoscope, and insufficiently clear imaging, so as to improve the reproducibility and color reproduction ability. strong effect

Inactive Publication Date: 2009-02-25
HANGZHOU HAWK OPTICAL ELECTRONICS INSTR CO LTD
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  • Summary
  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0003] The present invention mainly provides an electronic endoscope objective lens that can obtain ultra-high-resolution images, has a large field of view, and has clear imaging and is applied to the upper digestive tract; it solves the resolution of endoscopes in the prior art. It's not very high, and the imaging is not clear enough for technical problems

Method used

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  • Upper digestive tract electronic endoscope objective lens
  • Upper digestive tract electronic endoscope objective lens
  • Upper digestive tract electronic endoscope objective lens

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Embodiment

[0020] as attached figure 1 and 2 As shown, the upper gastrointestinal electronic endoscope objective lens includes 6 lenses, which are divided into 4 groups and an infrared cut filter. Starting from the object side, the first piece L1 is a single-piece negative lens element to form the first group; the second piece L2 is a single-piece positive lens element to form the second group; the third piece L3 is a single-piece positive lens element to form the first group Three groups; the fourth piece L4 is a negative lens element, the fifth piece L5 is a positive lens element, and the two pieces are glued together to form the fourth group; after the four groups of lenses, an infrared cut filter L6 is set. An aperture stop S is inserted between the second and third plates. 6 lenses form 11 mirrors, the radius of curvature of each mirror, the distance between the mirrors and the refractive index n of the glass material of each lens D And the Abbe's coefficient Ve is shown in the f...

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Abstract

The invention relates to the upper digestive tract electron endoscope objective lens. It includes optical component which is connected with mini-type color image sensor, has four sets of lens set and infrared cut off filter connected with the former. The invention has big field angle, clear imaging, can gain ultrahigh resolution image.

Description

technical field [0001] The invention relates to an upper gastrointestinal endoscope, in particular to an upper gastrointestinal electronic endoscope objective lens. Background technique [0002] Nowadays, medicine uses fluoroscopy, filming, ultrasound, nuclear magnetic resonance and other means to check and diagnose diseases in the body, which is convenient and quick. However, some diseases still require direct observation before they can be diagnosed and treated. Medical endoscopes are used to observe the internal body cavity of the human body. Through it, the tissue morphology of internal organs can be directly observed, which can improve the accuracy of diagnosis. According to its development and imaging structure, medical endoscopes can be roughly divided into three categories: rigid tube endoscopes, optical fiber endoscopes and electronic endoscopes. Medical electronic endoscopes are a combination of light, machinery and electricity. The modernized high-tech technology...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B13/00G02B9/34A61B1/273
Inventor 王华林李鸿源
Owner HANGZHOU HAWK OPTICAL ELECTRONICS INSTR CO LTD
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