Using dyes and filters in a fluorescent imaging system

Area of Science:

• Biophotonics and Imaging
• Molecular Biology and Biochemistry

Background:

• The FluorImager fluorescence imaging system is designed for sensitive detection of fluorescent signals.
• Accurate identification and quantification of fluorochromes are crucial in various biological applications.

Purpose of the Study:

• To describe the optical principles and filter configurations of the FluorImager system.
• To guide the selection of appropriate fluorochromes for optimal performance with the system's excitation and emission filters.

Main Methods:

• Utilizes monochromatic 488-nm laser excitation.
• Employs a built-in 515-nm long-pass filter to block excitation light and transmit emission light (>515 nm).
• Describes the function of long-pass and band-pass optical filters in spectral selection.

Main Results:

• Fluorochromes excitable by 488-nm light and emitting above 515 nm are suitable for the system.
• The 515-nm long-pass filter is generally sufficient for single fluorochrome detection.
• Interchangeable filters can be added to reduce background noise and attenuate strong signals.

Conclusions:

• The FluorImager system's optical design facilitates specific fluorescence detection.
• Careful selection of fluorochromes and filter combinations is key to maximizing imaging quality and data accuracy.