Piezoelectric light beam deflector

Details Piezoelectric light beam deflector Piezoelectric light beam deflector

1980-09-16

1983-05-31

Gensler, Paul L.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358200, 358901, 350 9620, 350 9629, G02B 514

Patent

active

043857981

ABSTRACT:
An optical apparatus for the deflection of a stationary beam of light to move the beam over two mutually perpendicular directions for projection onto a viewing screen. By suitably modulating the beam of light, images may be produced on the screen, as in the manner of TV images. The apparatus is defined by a piezoelectric bimorph of a known type which has been modified according to this invention so as to make each bimorph layer totally internally reflecting. The light deflection apparatus, also according to this invention, is made from a single bimorph provided with an extension of lesser mass and hence of lesser inertia. The main bimorph portion is electrically stimulated to oscillate it in a vertical (Y-axis) direction, and the extension is electrically stimulated to move it in a horizontal (X-axis) direction. The stationary beam of light is projected through the bimorph and onto the screen.

REFERENCES:
patent: 3349174 (1967-10-01), Warschauer
patent: 3442570 (1969-05-01), Picker
patent: 3836225 (1974-09-01), Wilde et al.

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