Fiber optic based laser range finder
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United States of America Patent
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May 29, 2018
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app pub date -
Feb 2, 2016
filing date -
Feb 5, 2015
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Abstract
Laser rangefinders and methods of using laser rangefinders are disclosed. One embodiment of a laser rangefinder includes a first DDS (direct digital synthesizer) outputting a first reference signal, an isolated laser source that receives the first signal and outputs an optical signal, a collimating lens coupled to the isolated laser source adapted to direct the optical signal to free space, a collecting lens positioned adjacent to the collimating lens adapted to receive a modulated optical signal from free space, a pin diode detector coupled to collecting lens, a second DDS outputting a second reference signal, and a computing device adapted to receive the first reference signal, the second reference signal, and the received modulated optical signal and calculate a distance.
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