A high-resolution endoscopic optical imaging system with ultra-fine diameter and large depth of field

An optical imaging system and high-resolution technology, applied in the field of ultra-fine diameter, large depth of field, and high-resolution endoscopic optical imaging systems, which can solve the problems of inaccessibility, human discomfort, and low discomfort, and meet the requirements of processing performance, lens The effect of miniaturization and optimized image quality

Active Publication Date: 2022-08-02
ZHEJIANG LAB +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Endoscope is a kind of medical testing equipment that is very commonly used at present. It can enter the position of the lesion to be inspected through the natural channel of the human body, and perform real-time dynamic imaging of the lesion. Can not reach, and cause discomfort to the human body, so the smaller the size of the endoscope, the less discomfort it will cause to the human body, and the greater competitiveness in the market

Method used

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  • A high-resolution endoscopic optical imaging system with ultra-fine diameter and large depth of field
  • A high-resolution endoscopic optical imaging system with ultra-fine diameter and large depth of field
  • A high-resolution endoscopic optical imaging system with ultra-fine diameter and large depth of field

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0114] Table 1 shows the surface type, curvature radius, thickness, semi-aperture and material of each lens in this embodiment.

[0115] Table 1 Example 1 Endoscopic optical imaging system lens parameters

[0116] face number surface type Radius of curvature (mm) Thickness(mm) Half Aperture(mm) Material OBJ spherical endless 2.0000 2.9220 S1 spherical endless 0.3000 0.5000 1.74,52.6 S2 spherical 0.4500 0.3479 0.3101 S3 spherical 0.8139 0.5715 0.2534 1.76,27.5 S4 spherical -1.1473 0.0536 0.1156 STO spherical endless 0.0253 0.0785 S5 spherical 0.9023 0.3000 0.0920 1.76,27.5 S6 spherical 0.5000 0.0733 0.1539 S7 spherical 0.9383 0.4065 0.2396 1.62,56.7 S8 spherical -0.7935 0.0500 0.3377 S9 spherical endless 0.3000 0.3667 1.52,64.1 S10 spherical endless 0.0300 0.4141 S11 spherical endless 0.4000 0.4214 1.52,64.1 S12 ...

Embodiment 2

[0118] Table 2 shows the surface type, curvature radius, thickness, semi-aperture and material of each lens in this embodiment.

[0119] Table 2 Example 2 Endoscopic optical imaging system lens parameters

[0120] face number surface type Radius of curvature (mm) Thickness(mm) Half Aperture(mm) Material OBJ spherical endless 2.0000 2.7290 S1 spherical endless 0.3000 0.5000 1.74,49.2 S2 spherical 0.4500 0.2486 0.3163 S3 spherical 1.0333 0.6847 0.2906 1.76,27.5 S4 spherical -0.9865 0.1262 0.1541 STO spherical endless 0.0248 0.0795 S5 spherical 0.7821 0.3000 0.0902 1.76,27.5 S6 spherical 0.5000 0.0756 0.1500 S7 spherical 0.9500 0.3898 0.2276 1.64,55.5 S8 spherical -0.8606 0.0655 0.3215 S9 spherical endless 0.3000 0.3548 1.52,64.1 S10 spherical endless 0.0365 0.4038 S11 spherical endless 0.4000 0.4133 1.52,64.1 S12 s...

Embodiment 3

[0122] Table 3 shows the surface type, radius of curvature, thickness, semi-diameter and material of each lens in this embodiment.

[0123] Table 3 Example 3 Endoscopic optical imaging system lens parameters

[0124]

[0125]

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Abstract

The invention relates to an ultra-fine diameter, large depth of field, and high-resolution endoscopic optical imaging system. Chip protection glass, the first lens, the second lens, the third lens and the fourth lens are all spherical lenses and are separated by air. The side is concave; the second lens has positive power, the object side is convex, and the image side is convex; the third lens has negative power, and its object side is convex, and the image side is concave; the fourth lens has positive power , the object side is convex, and the image side is convex; the maximum effective radius of the object side of the first lens is ≤0.5; the lens F number of the endoscopic optical imaging system is 5-8. The present invention has a lens with ultra-fine diameter, large depth of field and high resolution, has a compact structure, is convenient for processing and installation, and has good imaging quality.

Description

technical field [0001] The invention relates to the technical field of endoscopic optical imaging systems, in particular to an ultra-fine diameter and large depth of field high-resolution endoscopic optical imaging system. Background technique [0002] With the development of science and technology, medical endoscopes have undergone a transformation process from rigid medical endoscopes to fiber optic endoscopes to electronic endoscopes. The lens is an important part of the medical endoscope, and its imaging quality directly affects the use effect of the endoscope. And for the endoscope device, it will develop in the direction of miniaturization, wide observation range, and high performance. Endoscope is a kind of medical testing equipment that is very commonly used at present. It can enter through the natural pores of the human body to reach the location of the lesion to be examined, and perform real-time dynamic imaging of the lesion. It cannot be reached and will cause ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B23/24
CPCG02B23/2407G02B23/243
Inventor 王立强游兴海杨青王智
Owner ZHEJIANG LAB
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