Patent ID: 9618450
Date: 2017-04-11
CPC Classifications: G01N

Claim:
1. An optical sensor comprising: a housing having an optical pathway configured to direct light through an optical window optically connected to the optical pathway into a fluid sample under analysis and receive light from the fluid sample through the optical window; a first optical emitter configured to emit light at a first wavelength through the optical pathway and into the fluid sample; a second optical emitter configured to emit light at a second wavelength different than the first wavelength through the optical pathway and into the fluid sample; an optical detector configured to receive light from the fluid sample through the optical pathway; and a controller configured to control the first optical emitter and the second optical to emit light at different times, wherein the optical detector is configured to receive fluorescent emissions through the optical window from the fluid sample in response to light emitted by the first optical emitter, and the optical detector is configured to receive scattered light through the optical window from the fluid sample in response to light emitted by the second optical emitter.