Acousto-optic scanners
AssigneeRediffusion Simulation Limited
InventorsSean Sullivan, Roger A. Edwards
Life of this patent
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Abstract
An acousto-optic scanner comprising at least two optical sources the outputs of which differ in frequency, a common acousto-optic deflector, a scan lens, and scan correction means. The output of the light sources are directed through the common acousto-optic deflector and the outputs of the common acoustic-optic deflector are directed through the scan correction means which comprises a plurality of optical elements. The effect of the optical elements on optical beams is dependent upon beam characteristics.
Claims9
An acousto-optic scanner comprising at least two optical sources providing two light beam outputs which differ in frequency, a common acousto-optic deflector, a scan lens, and scan correction means comprising a plurality of optical elements, the two outputs of the light sources being directed through the common acousto-optic deflector and the outputs of the common acousto-optic deflector being directed through the scan lens and the scan correction means to form a scan image, the scan correction means being positioned between the scan lens and the scan image, and the acousto-optic deflector being positioned between the said optical sources and the scan lens at the front focus of the scan lens.
Dependencies are inferred from the claim text.