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an endoscope

A technology of endoscope and illumination optical system, which is applied in the field of endoscope, can solve the problems of enlargement and lower insertability, etc., and achieve the effect of improving insertability and good observation field of view

Active Publication Date: 2019-08-16
EZHOU INST OF IND TECH HUAZHONG UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to prevent the claws from blocking the irradiation range, the outer diameter of the illumination lens is widened, and the tip of the insertion part is further enlarged, which has the disadvantage of reducing the insertability into body cavities, equipment interiors, etc.

Method used

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Embodiment Construction

[0031] The principles and features of the present invention are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.

[0032] The main constituent elements of the endoscope 1 include: an insertion part 13, which has a tubular shape, and is used to be inserted into a body cavity, inside a device, etc. to acquire an internal image; incident to the insertion unit 13; an image processing unit (not shown) for image processing the image acquired by the insertion unit 13; and a display unit (not shown) for displaying the image processed image.

[0033] Such as figure 1 As shown, the insertion part 13 includes: two light guide members 15, which are respectively accommodated in the two light guide cavities 131 of the light guide member arranged along the length direction of the insertion part 13, and the part near the front end of each light...

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PUM

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Abstract

The invention provides an endoscope. The endoscope can make the light distribution performance of illumination light improved, a good observation view field is ensured, the top end part of the inserting part is miniaturized, and the insertability is improved. The endoscope comprises a tubular inserting part, a light guiding part, and a planoconcave lens, wherein the inserting part is provided witha top end part, the light guiding part is accommodated in the inserting part, and is used for guiding the illumination light to the top end part, the planoconcave lens is arranged at the top end partof the inserting part and is used for condensing light from the planoconcave lens and light from an observation area illuminated by the planoconcave lens, and the planoconcave lens is used for irradiating illumination light guided by the light guiding part; the end, opposite to the planoconcave lens, of the light guiding part extends in the direction approximately parallel to the optical axis ofan objective lens, and the shoulder of the top end part and the outer surface of the planoconcave lens located at the shoulder incline in the mode of converging to the top.

Description

technical field [0001] The present invention relates to an endoscope capable of switching between observation in a contact state and observation in a non-contact state for an object to be observed. Background technique [0002] In the prior art, since the light guide member is inclined with respect to the optical axis of the imaging element, the tip of the insertion portion becomes large, which affects the insertability into body cavities, devices, and the like. After improvement, although a concave lens or a convex lens is provided at the tip of the insertion part in order to improve the light distribution of the illumination light, in order to improve the positioning accuracy during assembly and improve the assemblability such as preventing the adhesive from flowing in, the insertion part Claws are provided on the top end. In order to prevent the claws from blocking the irradiation range, the outer diameter of the illumination lens is widened, and the tip of the insertion...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B1/06A61B1/07
Inventor 冯宇马骁萧付玲
Owner EZHOU INST OF IND TECH HUAZHONG UNIV OF SCI & TECH