SYSTEMS AND METHODS REDUCE TEMPERATURE INDUCED DRIFT EFFECTS ON A LIQUID LENS

SYSTEMS AND METHODS REDUCE TEMPERATURE INDUCED DRIFT EFFECTS ON A LIQUID LENS

Systems and methods reduce temperature induced drift effects on a liquid lens used in a vision system. A feedback loop receives a temperature value from a temperature sensor, and based on the received temperature value, controls a power to the heating element based on a difference between the measur...

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Hauptverfasser: JOUSSEN MARIO, NUNNINK LAURENS
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OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
PHYSICS
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NUNNINK LAURENS
description Systems and methods reduce temperature induced drift effects on a liquid lens used in a vision system. A feedback loop receives a temperature value from a temperature sensor, and based on the received temperature value, controls a power to the heating element based on a difference between the measured temperature of the liquid lens and a predetermined control temperature to maintain the temperature value within a predetermined control temperature range to reduce the effects of drift. A processor can also control a bias signal applied to the lens or a lens actuator to control temperature variations and the associated induced drift effects. An image sharpness can also be determined over a series of images, alone or in combination with controlling the temperature of the liquid lens, to adjust a focal distance of the lens.
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OPTICS
PHYSICS
title SYSTEMS AND METHODS REDUCE TEMPERATURE INDUCED DRIFT EFFECTS ON A LIQUID LENS
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