1982-01-29
1984-06-26
Sikes, William L.
350355, G02F 111
Patent
active
044563388
ABSTRACT:
An electronically tuneable light source which includes a source of white light, an acousto-optic modulator which includes a transparent medium and a means for generating an acoustical wave in the medium and a means for directing the collimated beam of the white light onto the medium at a preselected angle .theta./2, to a line which is perpendicular to the direction of travel of the acoustical wave. Interaction of the light beam with the acoustical wave causes diffraction of the light beam. Means are provided for selecting a visible band of the diffracted beam at an angle to the incident collimated beam of light equal to approximately .theta..
REFERENCES:
patent: 3632193 (1972-01-01), Kusters
patent: 3639775 (1972-01-01), Patel
patent: 3644015 (1972-02-01), Hearn
patent: 3653765 (1972-04-01), Hearn
patent: 3655265 (1972-04-01), Hammond
patent: 3687521 (1972-08-01), Kusters
Jr. Leon Scott
MacDonald Dettwiler & Associates Ltd.
Sikes William L.
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