Modulators – Amplitude modulator – Nonlinear device controlled by modulating signal
Patent
1983-10-31
1985-10-29
Buczinski, S. C.
Modulators
Amplitude modulator
Nonlinear device controlled by modulating signal
340365P, H01S 310, G08C 900
Patent
active
045502943
ABSTRACT:
A method of visually representing output data on a screen by deflecting a laser beam in both horizontal and vertical directions for scanning, and an indicating device for performing the above method. The laser beam is first divided into two polarized waves which are, after being modulated in accordance with the output data, combined into a first synthesized laser beam. The two polarized waves are alternately extinguished synchronously with a predetermined simple harmonic oscillation. The synthesized laser beam is then horizontally deflected by means of a sinusoidally oscillating mirror so that the angular displacement of the deflection oscillates in synchronism with the predetermined simple harmonic oscillation. The resultant deflected beam is again divided into two polarized waves, one of which is then inverted. The resulting two polarized waves are combined to obtain a second synthesized laser beam whose angular displacement in deflection is unidirectional at any phase. The second synthesized laser beam, after being vertically deflected, is projected on the screen for scanning.
REFERENCES:
patent: 4009488 (1977-02-01), Smith
patent: 4122438 (1978-10-01), Bird
patent: 4302681 (1981-11-01), Woodsford et al.
patent: 4329684 (1982-05-01), Monteath et al.
Fukui Yukio
Hirotani Toyotoshi
Kishi Yoshiki
Ohira Tomohiro
Buczinski S. C.
Carniol Burton J.
Director--General of Agency of Industrial Science and Technology
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