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 low resolution of endoscope, large field of view, insufficient imaging clarity, etc., achieve strong color reproduction ability, and improve reproduction sexual effect

Inactive Publication Date: 2007-11-07
HANGZHOU HAWK OPTICAL ELECTRONICS INSTR CO LTD
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  • 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

[0021] Put the above optical elements into the lens holder respectively, insert the CCD sensor 1 into the special lens sleeve, and the signal formed by the optical element will be transmitted by the CCD sensor 1 to form a clearer image, and then transmitted to the observer, thus forming A complete endoscopic observation system.

[0022] As shown in Figure 3, when the focus increment is 0, it can be seen from the optical transfer function diagram that the transfer function values ​​of 3 fields of view, 0, 0.707 and 1 in the regularized normalized coordinates, have been calculated. The 0 transfer value has very excellent resolution, and in the fringe field of view 1, the transfer value still has a very satisfactory performance when the spatial frequency is equal to 300lp / mm.

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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 Applications(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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