Development of a small-diameter and high-resolution industrial endoscope with CMOS image sensor

Yang, Lei; Chen, Meng; Zhu, Quing; Yang, Tong; Wang, Chao; Xie, Hao

doi:10.1016/j.sna.2019.04.026

Cited by 8 publications

(1 citation statement)

References 20 publications

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“…In rail transit, it can be used for visual inspection of critical components such as gearboxes, ventilation systems, and internal castings in high-speed trains. In automotive manufacturing, it can be used to detect engine internal component faults such as carbon accumulation, wear and tear, abnormal sounds, and corrosion [2] . Medical endoscopy is a common medical device that relies on a light source to assist in inserting a small camera into the human body through natural bodily openings or small surgical incisions [3] .…”

Section: Introductionmentioning

confidence: 99%

Structural optimization design of one-piece snake bone

li,

Huang,

et al. 2024

Fourth International Conference on Mechanical, Electronics, and Electrical and Automation Control (METMS 2024)

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Section: Introductionmentioning

confidence: 99%

Structural optimization design of one-piece snake bone

li,

Huang,

et al. 2024

Fourth International Conference on Mechanical, Electronics, and Electrical and Automation Control (METMS 2024)

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Polymer optical fiber and fiber Bragg grating sensors for biomedical engineering Applications: A comprehensive review

Ngiejungbwen,

Hamdaoui,

Chen

2024

Optics & Laser Technology

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Terahertz refractometry of hard-to-access objects using the sapphire endoscope suitable for harsh environments

Katyba,

Lebedev,

Kucheryavenko

et al. 2024

Applied Physics Letters

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While terahertz (THz) technology offers a variety of applications in medical diagnosis, nondestructive testing, and quality control, its acceptance in these practical fields is hampered by the absence of endoscopic systems, capable of sensing the complex refractive index of the hard-to-access objects. In this paper, we develop the THz endoscope based on the hollow-core antiresonant waveguide, formed by a polytetrafluoroethylene (PTFE)-coated sapphire tube with the outer end closed by a monolithic sapphire window. The endoscope is attached to the backward wave oscillator spectrometer to measure the sample reflectivity. By studying the well-known liquid and solid samples, we demonstrate that analysis of the Fabry–Pérot resonance in the measured reflection spectra makes it possible to quantify the complex refractive index of an analyte. Thanks to the advanced chemical inertness and thermal strength of sapphire and PTFE, the developed endoscope is capable of operation in harsh environments, which broadens the range of its applications. Our findings pave the way for the THz technology use in a number of demanding practical fields.

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Development of a small-diameter and high-resolution industrial endoscope with CMOS image sensor

Cited by 8 publications

References 20 publications

Structural optimization design of one-piece snake bone

Structural optimization design of one-piece snake bone

Polymer optical fiber and fiber Bragg grating sensors for biomedical engineering Applications: A comprehensive review

Terahertz refractometry of hard-to-access objects using the sapphire endoscope suitable for harsh environments

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