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RGB-color forward-viewing spectrally encoded endoscope using three orders of diffraction

Authors
  • Ikuta, Mitsuhiro1
  • Wu, Tzu-Yu1
  • Mach, Anderson T.1
  • Altshuler, Alexander1
  • Yan, Xuri1
  • Houskeeper, James H.1
  • Yamamoto, Akira2
  • Tatsumi, Shumpei2
  • Iwata, Ken-ichi2
  • Ryu, Jiheun3
  • Zeidan, Adel3
  • Tearney, Guillermo J.3, 3, 4
  • Takeuchi, Seiji1
  • 1 Canon U.S.A., Inc., USA , (United States)
  • 2 Canon Inc., Japan , (Japan)
  • 3 Massachusetts General Hospital, USA , (United States)
  • 4 Harvard-MIT Division of Health Science and Technology, USA , (United States)
Type
Published Article
Journal
Biomedical Optics Express
Publisher
The Optical Society
Publication Date
Jan 26, 2021
Volume
12
Issue
2
Pages
1036–1049
Identifiers
DOI: 10.1364/BOE.415852
PMID: 33680558
PMCID: PMC7901315
Source
PubMed Central
License
Unknown

Abstract

Spectrally encoded endoscopy (SEE) is an ultra-miniature endoscopy technology that encodes each spatial location on the sample with a different wavelength. One challenge in SEE is achieving color imaging with a small probe. We present a novel SEE probe that is capable of conducting real-time RGB imaging using three diffraction orders (6th order diffraction of the blue spectrum, 5th of green, and 4th of red). The probe was comprised of rotating 0.5 mm-diameter illumination optics inside a static, 1.2 mm-diameter flexible sheath with a rigid distal length of 5 mm containing detection fibers. A color chart, resolution target, and swine tissue were imaged. The device achieved 44k/59k/23k effective pixels per R/G/B channels over a 58° angular field and differentiated a wide gamut of colors.

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