Optical bandpass filter with adjustable reflection using a thin-film thickness for surgical fluorescein image-guided microscopy applications
- Authors
- Yoon, Ki-Cheol; Kim, Kwang Gi
- Issue Date
- Apr-2019
- Publisher
- WILEY
- Keywords
- camera; fluorescein; interference noise; laser; optical filter
- Citation
- MICROWAVE AND OPTICAL TECHNOLOGY LETTERS, v.61, no.4, pp.1126 - 1131
- Journal Title
- MICROWAVE AND OPTICAL TECHNOLOGY LETTERS
- Volume
- 61
- Number
- 4
- Start Page
- 1126
- End Page
- 1131
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/1605
- DOI
- 10.1002/mop.31684
- ISSN
- 0895-2477
- Abstract
- Interference noise rejection of an optical bandpass filter (BPF) with an adjustable thin-film thickness using titanium oxide (Ti3O5), silicon dioxide (SiO2), and a glass substrate for high-performance surgical fluorescein image-guided microscopy applications is achieved, and the details are presented herein. In general, a conventional surgical microscope utilizes a beam splitter due to interference noise rejection. However, this microscope is limited by a low-quality resolution and high attenuation of fluorescein images. The image resolution is typically inadequate for diagnosis and the interference noise could be directed to the surgical microscope when a filter is used. The wavelength of the laser which is used is 780-785 nm and the transmission and reflection of the fabricated BPF used in this investigation are 95% and 5% in the wavelength range of 815-872 nm and the optical density is within 1.0.
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