Capsule endoscopy

A capsule endoscope and lens technology, applied in telescopes, optics, instruments, etc., can solve the problems of high cost, unsatisfactory lens weight and total length of the mechanism, etc., and achieve the effect of cost reduction, satisfactory optical characteristics, and large relative aperture.

Active Publication Date: 2014-07-02
SHENZHEN JIFU MEDICAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the lens of the existing capsule endoscope usually adopts at least 5 or more lenses, not only the cost is high, but also the weight of the lens and the overall length of the mechanism are always not ideal

Method used

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Embodiment Construction

[0011] In order to make the object, technical solution and advantages of the present invention clearer, the present invention 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 invention, not to limit the present invention.

[0012] see figure 1 , the lens assembly 1 used for capsule endoscopy in this embodiment includes: a first lens 2, a second lens 3 and an aperture element 4 arranged in sequence along the optical axis from the object side to the image side; wherein,

[0013] The first lens 2 is an asymmetric biconcave lens with negative refractive power, the second lens 3 is a biconvex lens with positive refractive power, and both surfaces of the first lens 2 and the second lens 3 are aspherical; behind the second lens 2.

[0014] The first lens 2 and the second lens 3 satisfy the following conditions:

[0015] ①...

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Abstract

The invention discloses a lens component of a capsule endoscopy and the capsule endoscopy. The lens component of the capsule endoscopy comprises a first lens, a second lens and a diagram element which are sequentially arranged along an optical axis from an object space to an image space, wherein the first lens is an asymmetric biconcave lens having negative refractive power; the second lens is an asymmetric biconvex lens having positive refractive power; and two surfaces of the first lens and the second lens are aspheric surfaces. Compared with the prior art, the invention has the advantages that: under the condition of less lens components, a lens has lightened weight and reduced cost, a large wide angle, a large relative aperture, low distortion and shorter total lens length can be realized simultaneously, aberration in an optical system can be effectively corrected, a satisfactory optical property and a wider total vision angle are realized, and a special application requirement for macro shooting in a human body is met.

Description

technical field [0001] The invention relates to a medical diagnosis and treatment device, in particular to a capsule endoscope. Background technique [0002] In recent years, the development and production of endoscope systems have achieved rapid development and are widely used. Many companies have developed different types of endoscopes, which are used in medicine and civil industries. The use of more and more endoscopes facilitates clinical diagnosis, relieves patients' clinical pain and improves technical level. However, the lens of the existing capsule endoscope usually adopts at least 5 or more lenses, which not only costs a lot, but also makes the weight of the lens and the overall length of the mechanism not ideal. Therefore, it is necessary to propose a micro-lens with a new structure to meet the requirements of capsule endoscopy. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a capsule endoscope, whic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B13/18G02B13/00G02B13/06G02B23/24A61B1/00
Inventor 陈延伟艾文李奕
Owner SHENZHEN JIFU MEDICAL TECH CO LTD
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