Multi-axial confocal distance sensor using varifocal liquid lens

Abstract

The paper repots on a multi-axial confocal distance sensor using a combination of varifocal liquid lens and a scanning mirror. The liquid lens can change its focal length only by applying a voltage. Thus the sensor can scan laser without using a long stroke actuators. From this point, the sensor size can be miniaturized to attach on hand-held observation… (More)

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