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Monday, October 17, 2011

Optical Sensor

Electro-optical sensors are those which convert the light rays in to electronic signal very similar to the photo resistor, these are applied in emergency lamps such that when there is light it is made to switch off and when there is no light it automatically made to switch on. In aviation, electro-optical devices have been used as part of the avionics, in order to expand both range and vision at low ambient light levels.

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