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Medical capsule wide-angle endoscope lens

A lens and capsule technology, applied in the fields of endoscopy, application, medical science, etc., can solve the problems of inconvenient operation, small shooting range, low practicability, etc., and achieve the effect of large field of view and excellent depth of field.

Pending Publication Date: 2022-01-28
江西高瑞光电股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of the fact that the field of view of the endoscopic lens is only 120 degrees, which cannot meet the requirements of a larger field of view, the shooting range is small, it cannot capture more scenes at the same time, the operation is inconvenient, and the practicability is low. The purpose of the invention is to provide a medical capsule wide-angle endoscopic lens

Method used

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  • Medical capsule wide-angle endoscope lens
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  • Medical capsule wide-angle endoscope lens

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] In this example, the optical system O data is shown in Table 1 below:

[0026] The optical system O data of table 1 embodiment 1

[0027] surface Radius (mm) Thickness (mm) Refractive index P1 front surface 5.9 3 1.6 P1 back surface 1.04 1.56 P2 front surface -19.27 0.29 1.5 P2 back surface 0.46 0.52 P3 front surface 0.69 0.46 1.6 P3 back surface 4 0.17 aperture flat 0.13 P4 front surface 3.33 0.3 1.5 P4 back surface -2.46 0.14 P5 front surface 2.16 0.38 1.5 P5 back surface -1.32 0.5 Image surface flat 1.05

[0028] Among the above arc-shaped lenses, except for the front curved surface of the first lens P1, the others are all aspherical surfaces, and the aspheric conical coefficient values ​​and the aspheric coefficients of each order can be set to appropriate values. The values ​​of the aspherical conic coefficients and the aspheric coefficients ...

Embodiment 2

[0034] In this example, the optical system O data is shown in Table 3 below:

[0035] The optical system O data of table 3 embodiment 2

[0036]

[0037]

[0038] Among the above arc-shaped lenses, except for the front curved surface of the first lens P1, the others are all aspherical surfaces, and the aspheric conical coefficient values ​​and the aspheric coefficients of each order can be set to appropriate values. The values ​​of the aspherical conic coefficients and the aspheric coefficients of each order in this embodiment are shown in Table 4 below, where K is the aspheric conic coefficient, and a1, a2, a3, and a4 correspond to 4, 6, 8, and 10 respectively order aspheric coefficients.

[0039] The aspheric conic coefficient values ​​and the aspheric coefficients of each order of all curved lenses in Table 4 embodiment 2

[0040] face number K a1 a2 a3 a4 P1 back surface -1.53 -0.12785 0.24155 -0.13664 0.03470 P2 front surface 82.6 0...

Embodiment 3

[0043] In this example, the optical system O data is shown in Table 5 below:

[0044] Optical system O data of table 5 embodiment 3

[0045]

[0046]

[0047] Among the above arc-shaped lenses, except for the front curved surface of the first lens P1, the others are all aspherical surfaces, and the aspheric conical coefficient values ​​and the aspheric coefficients of each order can be set to appropriate values. The values ​​of the aspherical conic coefficients and the aspheric coefficients of each order in this embodiment are shown in Table 6 below, where K is the aspherical conic coefficient, and a1, a2, a3, and a4 correspond to 4, 6, 8, and 10 respectively order aspheric coefficients.

[0048] The aspheric conic coefficient values ​​and the aspheric coefficients of each order of all curved lenses in table 6 embodiment 3

[0049] face number K a1 a2 a3 a4 P1 back surface -0.55 0.01319 -0.42829 0.44434 -0.21649 P2 front surface -26.03 0...

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Abstract

The invention belongs to the technical field of optical instruments, and particularly relates to a medical capsule wide-angle endoscope lens and a capsule lens optical system. The medical capsule wide-angle endoscope lens comprises an arc-shaped lens P1 which is a meniscus-structured lens with negative focal power, an arc-shaped lens P2 which is a meniscus-structured lens with negative focal power, an arc-shaped lens P3 which is a meniscus-structured lens with positive focal power, an arc-shaped lens P4 which is a meniscus-structured lens with positive focal power and an arc-shaped lens P5 which is a biconvex lens with positive focal power, wherein the arc-shaped lens P1, the meniscus-structured lens P2, the meniscus-structured lens P3, the meniscus-structured lens P4 and the biconvex-structured lens P5 share the same optical axis from the image side to the object side in sequence. Compared with the prior art, the large view field angle and the excellent depth of field can be achieved, and the lens can achieve better imaging from the breadth and the depth.

Description

technical field [0001] The invention belongs to the technical field of optical instruments, and in particular relates to a medical capsule wide-angle endoscopic lens. Background technique [0002] Capsule endoscopy actually shrinks the camera and implants a medical capsule to help doctors diagnose patients. A small capsule is a camera studio for exploring the human body, and may even become a "spaceship" that travels through the human body; from the outside, it is not much different from ordinary capsule medicine, but it is a miniature camera, used to spy on the human body's stomach and intestines. The health of the esophagus. After the patient swallows, the capsule runs along the direction of digestion with the movement of the gastrointestinal muscles, takes images, and then transmits the images to the data transmission device tied around the waist of the patient. However, in actual use, the field of view of the endoscopic lens is only 120 degrees, which cannot meet the r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B1/04
CPCA61B1/0019A61B1/00174A61B1/041
Inventor 陈键兵
Owner 江西高瑞光电股份有限公司
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