Fluorescence biosensor

Details Fluorescence biosensor Fluorescence biosensor

2007-02-22

2009-06-02

Lam, Ann Y (Department: 1641)

Chemistry: molecular biology and microbiology

Apparatus

Including measuring or testing

Reexamination Certificate

active

07541176

ABSTRACT:
A fluorescence detector includes a light source being positioned so that in use, radiation emitted therefrom falls on one or more fluorescing species, and a photodetector being switchably connectable between a charge integrator device and a charge disposal device. The photodetector is positionable to detect fluorescent radiation from the fluorescing species. A controller communicates with the light source and the photodetector, and is operable in a cyclic manner to activate the light source to emit radiation and connect the photodetector to the charge disposal device for a first period of time, and connect the photodetector to the charge integrator device for a second period of time after the first period. The charge integrator device is not reset from one cycle to the next.

REFERENCES:
patent: 3655987 (1972-04-01), Hinds
patent: 4688017 (1987-08-01), Huebner et al.
patent: 5715049 (1998-02-01), Ohsuka et al.
patent: 5998152 (1999-12-01), Lynch et al.
patent: 4420572 (1995-12-01), None
patent: 2000205951 (2000-07-01), None

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