Micro UV detector

Details Micro UV detector Micro UV detector

2005-11-03

2008-05-20

Hannaher, Constantine (Department: 2884)

Radiant energy

Luminophor irradiation

With ultraviolet source

C250S575000, C250S573000, C356S336000, C356S338000, C359S361000, C324S464000

Reexamination Certificate

active

07375348

ABSTRACT:
A biological aerosol detector is provided. The biological aerosol detector uses a semiconductor optical source with an ultraviolet emission band to excite biological molecules in an aerosol sample. Filtering optics are configured to attenuate radiation from a secondary emission band of the optical source to prevent false signals due to scattering of secondary emission band radiation from non-biological molecules. An intake/exhaust manifold that includes an intake pipe that fits within a concentric exhaust pipe is also provided. The intake/exhaust manifold planarizes the flow of the sampled aerosol to maximize the time of irradiation. An electrostatic sampling grid is also provided to selectively draw biological molecules having a net charge into the optical chamber.

REFERENCES:
patent: 5254861 (1993-10-01), Carpenter et al.
patent: 6140653 (2000-10-01), Che
patent: 6967338 (2005-11-01), Sickenberger et al.
Kopp, Christophe et al. “Micro-chip laser—a comparison between gradient-index lens and ball-lens for pump-laser diode coupling”, Optics Communications 235, Elsevier (Jan. 22, 2004), pp. 175-182.

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