Patent ID: 9080985
Filing Date: 2015-07-14
Classification: G01N

Abstract:
1. An optical sensor for detecting chemical components in a fluid, comprising: two or more light sources; two or more sensors, each sensor for sensing a chemical in a fluid, each of the sensors being arranged to receive light from a respective one of the two or more light sources, and each of the sensors being configured to emit or reflect light in response to the received light, wherein a colour and/or intensity of the light emitted or reflected from a sensor is dependent upon a presence of one or more chemicals to be detected in a fluid, and wherein the two or more sensors are configured to be in contact with a fluid comprising one or more chemicals to be detected; a light detector arranged to receive the light emitted or reflected by each of the two or more sensors; a collimator arranged to guide light emitted by each of the two or more light sources to the respective two or more sensors, and configured to guide light emitted or reflected by each of the two or more sensors to the light detector; and a controller coupled to the two or more light sources and the light detector, the controller being configured to control the light sources and light detector such that only one light source is active at any one time.