Optical Sensor

Optical sensors use the technology of conversion of light into an electrical signal to sense various parameters. Fiber optic sensors use fibre optic technology to transmit light through fibre cables before conversion. Optical sensors can be used for various applications such as flow, movement, displacement, liquid level, rotation etc. For measuring all these parameters, a light source generates a light and a receiver monitors the generated light. Depending on the parameter to be measured, there will be variation in the measured light and thus can be proportionately measured.
Proximity sensors use optical sensing technology by measuring the distance between the light source and the reflected object. Proximity sensor is used for detecting the distance between two objects typically between a stationery object and a moving object.