A comparison of the Long Working Distance of the GRIN Lens- and C-Lens-Based OCT Probe

Yingwei Fan; Site Luo; Hongxiang Kang

doi:10.1109/ACCESS.2019.2927501

A comparison of the Long Working Distance of the GRIN Lens- and C-Lens-Based OCT Probe

Yingwei Fan, Site Luo^*, Hongxiang Kang

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

8 Citations (Scopus)

Abstract

The standard technical scheme for imaging with an endoscopic optical coherence tomography (OCT) probe is to use a GRIN lens to focus the beam. However, when a long working distance is required of the OCT probe, various factors will affect the imaging quality. Here, we conduct a theoretical calculation to analyze the sensitivity of the GRIN lens and the C-lens of an OCT probe. The sensitivity of ω₀V_sL of the GRIN lens is ten times higher than that of the C-lens. The sensitivity of Z₀V_sL of the GRIN lens is 24 times higher than that of the C-lens. In addition, the sensitivity of the radius of curvature of the C-lens is compared with the sensitivity of the length of the GRIN lens, and the sensitivity for the GRIN lens is about five times higher than the sensitivity of the radius of curvature for the C-lens. Furthermore, fabricating a C-lens-based OCT probe is much cheaper than a GRIN-lens-based one. Hence, our calculations suggest that the C-lens is a better choice for a long-working-distance OCT probe.

Original language	English
Article number	8758122
Pages (from-to)	93212-93218
Number of pages	7
Journal	IEEE Access
Volume	7
DOIs	https://doi.org/10.1109/ACCESS.2019.2927501
Publication status	Published - 2019
Externally published	Yes

Keywords

C-lens
GRIN lens
Optical coherence tomography
endoscopic probe
working distance

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10.1109/ACCESS.2019.2927501

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title = "A comparison of the Long Working Distance of the GRIN Lens- and C-Lens-Based OCT Probe",

abstract = "The standard technical scheme for imaging with an endoscopic optical coherence tomography (OCT) probe is to use a GRIN lens to focus the beam. However, when a long working distance is required of the OCT probe, various factors will affect the imaging quality. Here, we conduct a theoretical calculation to analyze the sensitivity of the GRIN lens and the C-lens of an OCT probe. The sensitivity of ω0VsL of the GRIN lens is ten times higher than that of the C-lens. The sensitivity of Z0VsL of the GRIN lens is 24 times higher than that of the C-lens. In addition, the sensitivity of the radius of curvature of the C-lens is compared with the sensitivity of the length of the GRIN lens, and the sensitivity for the GRIN lens is about five times higher than the sensitivity of the radius of curvature for the C-lens. Furthermore, fabricating a C-lens-based OCT probe is much cheaper than a GRIN-lens-based one. Hence, our calculations suggest that the C-lens is a better choice for a long-working-distance OCT probe.",

keywords = "C-lens, GRIN lens, Optical coherence tomography, endoscopic probe, working distance",

author = "Yingwei Fan and Site Luo and Hongxiang Kang",

note = "Publisher Copyright: {\textcopyright} 2013 IEEE.",

year = "2019",

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AU - Luo, Site

AU - Kang, Hongxiang

PY - 2019

Y1 - 2019

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AB - The standard technical scheme for imaging with an endoscopic optical coherence tomography (OCT) probe is to use a GRIN lens to focus the beam. However, when a long working distance is required of the OCT probe, various factors will affect the imaging quality. Here, we conduct a theoretical calculation to analyze the sensitivity of the GRIN lens and the C-lens of an OCT probe. The sensitivity of ω0VsL of the GRIN lens is ten times higher than that of the C-lens. The sensitivity of Z0VsL of the GRIN lens is 24 times higher than that of the C-lens. In addition, the sensitivity of the radius of curvature of the C-lens is compared with the sensitivity of the length of the GRIN lens, and the sensitivity for the GRIN lens is about five times higher than the sensitivity of the radius of curvature for the C-lens. Furthermore, fabricating a C-lens-based OCT probe is much cheaper than a GRIN-lens-based one. Hence, our calculations suggest that the C-lens is a better choice for a long-working-distance OCT probe.

KW - C-lens

KW - GRIN lens

KW - Optical coherence tomography

KW - endoscopic probe

KW - working distance

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A comparison of the Long Working Distance of the GRIN Lens- and C-Lens-Based OCT Probe

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Keywords

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