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Image sensor with hybrid emission filter for in vivo fluorescent imaging
Author(s) -
Sasagawa Kiyotaka,
Rustami Erus,
Ohta Yasumi,
Haruta Makito,
Takehara Hironari,
Tashiro Hiroyuki,
Ohta Jun
Publication year - 2021
Publication title -
electronics and communications in japan
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.131
H-Index - 13
eISSN - 1942-9541
pISSN - 1942-9533
DOI - 10.1002/ecj.12313
Subject(s) - filter (signal processing) , band pass filter , materials science , optical filter , interference filter , image sensor , optics , fluorescence , acoustics , computer science , optoelectronics , computer vision , physics , wavelength
In this paper, we report a method of fabricating an implantable image sensor equipped a bandpass hybrid filter for highly sensitive fluorescence observation. A hybrid filter that combines an interference filter and an absorption filter enables a high excitation light removal performance in an implantable image sensor that does not use a lens. In this study, a thin hybrid filter was successfully mounted on the image sensor using the transfer method by using a laser lift‐off technique. The transferred filter has no crack. It was demonstrated that the prototype device exhibited high excitation light removal performance and was able to acquire a fluorescent image with high contrast.