@inproceedings{4510dcd2f4264d7782033cb1d0aa2357,
title = "Graded-index plastic optical fiber for needle-sized lens and rigid endoscope",
abstract = "We have been developing a graded-index plastic optical fiber (GI-POF) for a needle-sized lens and a rigid endoscope. With highly accurate control of refractive index within a plastic lens, we can utilize it for an ultra-fine lens as a replacement for a relay lens or fiber-bundled lens in conventional rigid endoscopes. The 0.5-mm diameter lens performs high resolution with about 200-line pairs/mm. For endoscope imaging, we used optical and digital correction of chromatic aberration caused by material properties of GI-POF lens. The rigid endoscope with the GI-POF lens has a possibility to allow doctors to directly observe a patient's inner affected area before and after surgery in a minimally invasive procedure, enabling rapid and accurate assessment of the patient's condition and efficient post-operative followup.",
keywords = "needle-sized, Plastic optical fiber, refractive index, rigid endoscope",
author = "Hiromasa Yamashita and Ikko Koike and Masaya Nakamura and Yasuhiro Koike",
note = "Publisher Copyright: {\textcopyright} 2025 SPIE.; Ultra-High-Definition Imaging Systems VIII 2025 ; Conference date: 29-01-2025 Through 30-01-2025",
year = "2025",
doi = "10.1117/12.3047625",
language = "English",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
publisher = "SPIE",
editor = "Seizo Miyata and Toyohiko Yatagai and Yasuhiro Koike",
booktitle = "Ultra-High-Definition Imaging Systems VIII",
}