Patent ID: 9518923
Filing Date: 2016-12-13
CPC Classification: G01N

Claim Text:
1. A fluorescence detection system comprising: a light source adapted to emit excitation light; a sample unit having a sample disposed therein; a first optical fiber adapted to connect the light source to the sample unit; an avalanche photodiode array detector adapted to receive fluorescent light generated by the sample when the sample is irradiated with the excitation light; and a second optical fiber adapted to connect the sample unit to the avalanche photodiode array detector, wherein the second optical fiber has a numerical aperture of equal to or greater than about 0.15 and the second optical fiber is positioned such that a longitudinal axis of the second optical fiber is orthogonal to a longitudinal axis of the first optical fiber; and wherein the fluorescence detection system has a fluorescence detection limit of equal to or greater than about one fluorescent particle per microliter for fluorescent particles having an average diameter of about two micrometers.