Patent ID: 9557270
Date: 2017-01-31
CPC Classifications: G01N

Claim:
1. An optical sensor comprising: a first optical detector; an optical window; a first optical pathway extending between the first optical detector and the optical window; a first optical emitter and configured to emit light at a first wavelength; an optical emitter assembly at least partially disposed in the first optical pathway, the optical emitter assembly comprising a second optical emitter configured to emit light at a second wavelength into the first optical pathway and toward the optical window; and a housing including the first optical pathway and supporting the first optical detector, the optical window, the first optical emitter, and the optical emitter assembly; wherein light emitted from the first optical emitter is directed from the housing into a fluid sample via at least part of the first optical pathway and via the optical window; and light is received from the fluid sample into the housing and directed to the first optical detector via the optical window and the at least part of the first optical pathway.