Electronically tuneable light source

Details Electronically tuneable light source Electronically tuneable light source

G - Physics

02

F

325/1, 345/57

G02F 1/11 (2006.01) G02B 27/42 (2006.01)

Patent

CA 1184286

ABSTRACT OF THE DISCLOSURE An electronically tuneable light source which includes a source of white light, an acousto-optic modulator which includes a transparent medium and a device for generating an acoustical wave in the medium and a focusing and collimating assembly for directing the collimated beam of the white light onto the medium at a preselected angle ?/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. An aperture in a plate is provided for selecting a visible band of the diffracted beam at an angle to the incident collimated beam of light equal to approximately ?.

394080

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