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7 May 1997 Design of a fluorescence-lifetime imaging microscope workstation
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Proceedings Volume 2980, Advances in Fluorescence Sensing Technology III; (1997)
Event: BiOS '97, Part of Photonics West, 1997, San Jose, CA, United States
One of the promising recent developments in fluorescence microscopy is fluorescence lifetime imaging microscopy. This type of microscopy images the lifetime of fluorescence molecules (in the nano second range) rather than the amount of light emitted by these molecules. This physical property is of interest while it gives information about the local environment of the molecule, such as molecular concentration of O2, Ca2+, pH, and conjugation. Our goal is to design a affordable, robust and easy-to-use FLIM workstation which is completely automated and does not need any difficult calibration. Therefore we are developing a workstation which applies a homodyne detection scheme (frequency range: 1 - 100 MHz) with use of an intensity modulated laser-diode (635 nm) and a gain modulated intensified CCD camera to image fluorescence lifetimes in the range of 1 - 100 ns. Using these components it is possible to make a FLIM workstation based on a normal fluorescence microscope by just replacing the light source and image detector. The FLIM image acquisition procedure in software allows automatic optical measurements of fluorescence lifetimes in different ranges and mixtures of lifetimes by adjusting the modulation frequency.
© (1997) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Frank R. Boddeke, Lambertus K. van Geest, and Ian T. Young "Design of a fluorescence-lifetime imaging microscope workstation", Proc. SPIE 2980, Advances in Fluorescence Sensing Technology III, (7 May 1997); doi: 10.1117/12.273537;


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