Lensless dual-color fluorescence imaging device using hybrid filter. (1st May 2022)

• Record Type: Journal Article
• Authors: Kulmala, Natcha; Sasagawa, Kiyotaka; Treepetchkul, Thanaree; Takehara, Hironari; Haruta, Makito; Tashiro, Hiroyuki; Ohta, Jun
• Is Part Of: Japanese journal of applied physics. Volume 61:Number SC(2022)
• Publication Date: 2022-05-01
• Subjects: lensless imaging device -- fluorescence imaging -- hybrid filter -- contact imaging; Physics -- Periodicals; 621.05
• DOI: 10.35848/1347-4065/ac3ef2
• Languages: English
• ISSNs: 0021-4922

Abstract

Abstract: In this study, a dual-band hybrid filter that achieves high excitation light rejection performance in a lensless imaging system was fabricated and incorporated into an imaging device. The hybrid filter consisted of interference and absorption filters, and a fiber optic plate (FOP). The interference filters were attached to both sides of the FOP, which was placed on top of the absorption filter to suppress the decrease in spatial resolution. In addition, the lamination order was optimized to achieve a high fluorescence observation performance. The fabricated hybrid filter was mounted on an image sensor and had the ability to indicate the green and red fluorescence components.