Open AccessRGB-color forward-viewing spectrally encoded endoscope using three orders of diffraction
Author(s) -
Mitsuhiro Ikuta,
Tzu-Yu Wu,
Anderson T. Mach,
A. E. Altshuler,
Xuri Yan,
James H. Houskeeper,
Akira Yamamoto,
Shumpei Tatsumi,
Kazunori Iwata,
Ji Heon Ryu,
Adel Zeidan,
Guillermo J. Tearney,
Shigeyuki Takeuchi
Publication year - 2021
Publication title -
biomedical optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.362
H-Index - 86
ISSN - 2156-7085
DOI - 10.1364/boe.415852
Subject(s) - rgb color model , optics , diffraction , gamut , pixel , materials science , image resolution , field of view , color space , physics , computer science , computer vision , image (mathematics)
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.