TY - JOUR
T1 - Near-infrared fundus camera with a patterned interference filter for the retinal scattering detection
AU - Wang, Ze
AU - Uemura, Masayuki
AU - Takehara, Hironari
AU - Haruta, Makito
AU - Tashiro, Hiroyuki
AU - Sasagawa, Kiyotaka
AU - Ohta, Jun
N1 - Funding Information:
This research is supported by JST ACCEL(JPMJAC1601). We would like to express our sincere thanks to Professor Koichi Shimizu of Waseda University for his advice with this study.
Publisher Copyright:
© 2021 The Japan Society of Applied Physics.
PY - 2021/5
Y1 - 2021/5
N2 - The fundus camera is a system that enables retinal observations for the diagnosis of eye diseases. A near-infrared (NIR) multispectral fundus imaging system can capture color images using NIR light instead of visible light, thus avoiding irritation of the eyes and allowing for easier observations of the fundus. In this study, we developed an NIR fundus camera with a patterned metal mask for retinal patterned illumination. The pattern illuminated fundus images from the experiment prove the feasibility of retinal scattering detection using retinal patterned illumination. The layout of the patterned mask was optimized to prevent the interaction of scattered light and the multi-layer film structures of a patterned interference filter were proposed. The simulated transmission spectra showed that the transmittance of the linear stripe pattern, visual target, and fundus illumination are sufficiently high for the retinal patterned illumination.
AB - The fundus camera is a system that enables retinal observations for the diagnosis of eye diseases. A near-infrared (NIR) multispectral fundus imaging system can capture color images using NIR light instead of visible light, thus avoiding irritation of the eyes and allowing for easier observations of the fundus. In this study, we developed an NIR fundus camera with a patterned metal mask for retinal patterned illumination. The pattern illuminated fundus images from the experiment prove the feasibility of retinal scattering detection using retinal patterned illumination. The layout of the patterned mask was optimized to prevent the interaction of scattered light and the multi-layer film structures of a patterned interference filter were proposed. The simulated transmission spectra showed that the transmittance of the linear stripe pattern, visual target, and fundus illumination are sufficiently high for the retinal patterned illumination.
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U2 - 10.35848/1347-4065/abea4c
DO - 10.35848/1347-4065/abea4c
M3 - Article
AN - SCOPUS:85103839460
SN - 0021-4922
VL - 60
JO - Japanese journal of applied physics
JF - Japanese journal of applied physics
IS - SB
M1 - SBBL07
ER -