Patent ID: 9355542
Filing Date: 2016-05-31
CPC Classification: G01J,G08B

Claim Text:
1. An optical flame detector comprising: a body; a first infrared source housed within the body and configured to generate a first emission having a first wavelength; a second infrared source housed within the body and configured to generate a second emission having a second wavelength that is different than the first wavelength, the first emission and the second emission being generated in less than one hundred milliseconds and in response to receiving a request to perform a self-test; a first window coupled to the body and configured to filter and reflect the first emission from the first infrared source and the second emission from the second infrared source; a second window coupled to the body and configured to filter and reflect the first emission from the first infrared source and the second emission from the second infrared source; a first detector housed within the body and configured to monitor an environment through the first window and to receive the first emission from the first infrared source reflected by the first window and to receive the second emission from the second infrared source reflected by the first window; and a second detector housed within the body and configured to monitor the environment through the window and to receive the first emission from the first infrared source reflected by the second window and to receive the second emission from the second infrared source reflected by the second window.