Deflection-type modulator of laser beam for commmunications

Details Deflection-type modulator of laser beam for commmunications Deflection-type modulator of laser beam for commmunications

H - Electricity

04

R

325/1, 345/56, 8

H04R 1/44 (2006.01) G02B 26/08 (2006.01) H04B 10/00 (2006.01)

Patent

CA 1084118

Abstract A deflection-type modulator, for insertion in the path of a laser beam directed to a remote receiver, includes a mirror mounted on a voice coil device and positioned in the focal plane of a lens. A prism reflects the laser beam at right angles through one-half of the lens to a focal point on the mirror. The beam is reflected back through the other half of the lens, and is reflected by another face of the prism normally to a point between two spaced photosensors at the remote receiver. An electrical audio signal applied to the voice coil device causes the laser beam to be deflected back and forth between the two photo- sensors at the remote receiver.

283424

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