Patent ID: 11946801
Assignee: AMS-OSRAM AG
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A sensing system comprising:
a light filtering apparatus configured to:
pass a first wavelength of light corresponding to an emission spectrum characteristic of Mercury, wherein the first wavelength is between about 509 nm and about 533 nm, and
the light filtering apparatus is configured to pass a second wavelength of light corresponding to a different emission spectrum characteristic of Mercury, wherein the second wavelength is between about 534 nm and about 558 nm;

a sensor configured to receive light passed by the light filtering apparatus and produce a sensor response that is indicative of the light passed by the light filtering apparatus; and,
a processor configured to:
calculate a value that is at least partially dependent upon sensor responses to the first and second wavelengths of light; and,
compare the value to a threshold value to distinguish between light emitted by a fluorescent light source and light emitted by a light emitting diode.