Particle detectors

US10094777B2 · kind B2 · utility

Assignee

• Garrett Thermal Systems Limited · GB

Inventors

• Ronald Knox · Westminster, US
• Kate Cooper · Melbourne, AU
• Kemal Ajay · Melbourne, AU

Key dates

• Filing date: Aug 25, 2016
• Grant date: Oct 9, 2018
• Expiry date: Aug 25, 2036

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10D64/512
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A beam detector including a light source, a receiver, and a target, acting in cooperation to detect particles in a monitored area. The target reflects incident light, resulting in reflected light being returned to receiver. The receiver is capable of recording and reporting light intensity at a plurality of points across its field of view. In the preferred form the detector emits a first light beam in a first wavelength band; a second light beam in a second wavelength band; and a third light beam in a third wavelength band, wherein the first and second wavelengths bands are substantially equal and are different to the third wavelength band.