| 摘要 |
A microphone utilizing a laser light for conversion of acoustical sound waves to corresponding electrical signals which may, in turn, be amplified and processed for sound reproduction or recording. The microphone has a cylindrical outer housing with a plurality of circumferentially spaced openings for the entry of sound waves, a cylindrical inner housing positioned concentrically inside the outer housing, a laser for projecting laser light into the space between the outer and inner housings, and a plurality of photo detectors for receiving the sound-modulated laser light to produce electrical signals corresponding to the sound waves entering the openings in the outer housing.
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