Optical mass memory

Details Optical mass memory Optical mass memory

1975-08-01

1976-12-07

Cook, Daryl W.

Communications: electrical

Digital comparator systems

235 6111E, 350160R, G11C 1304, G06K 710, G02B 523

Patent

active

039965708

ABSTRACT:
A data recording and retrieval system wherein a beam of coherent radiation is optically formed into an intense spot and deflected by first and second deflecting means to impinge upon a storage medium. The beam is spot-focused by a lens system which includes a multiple lens array, and selectively deflected by a pair of mirrors through a particular lenslet of the multiple-lens array to one of a plurality of storage fields of the recording medium. When the storage field is selected, a second deflection system produces a randomly selectable X-Y deflection of the beam, within the area of the preselected storage field. The multiple lens array provides a plurality of lenslets, each lenslet of the array corresponding with a different one of the plurality of storage fields within a storage area of the recording medium. Also included are means for illuminating a selected one of the areas of the storage medium and detector means for sensing data recorded on the selected storage field projected through a corresonding lenslet of the multiple lens array to the detector means.

REFERENCES:
patent: 3096441 (1963-07-01), Burkhardt
patent: 3191157 (1965-06-01), Parker et al.
patent: 3706080 (1972-12-01), Lee
patent: 3737877 (1973-06-01), Feinleib
patent: 3765749 (1973-10-01), LaMacchia

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