Optical random access memory having diffractive simplex...

Details Optical random access memory having diffractive simplex... Optical random access memory having diffractive simplex...

G - Physics

11

C

G11C 13/04 (2006.01) G11C 11/42 (2006.01)

Patent

CA 2194283

An optical memory (100) in which data is stored in an optical data layer (190) capable of selectively altering light such as by changeable transmissivity. Data is organized into a plurality of regions or patches (called pages) in which each page contains a field of data spots storing binary data as the presence or absence of a hole. The data is illuminated by controllable light sources (150) and an array of single element diffractive imaging lenslets (210), one for each data page, projects the image onto a common array of light sensors (270).

Mémoire optique (100, fig 7a) où des données sont enregistrées dans une couche de données optique (190) pouvant modifier sélectivement la lumière p. ex. par des variations de transmissivité. Les données sont réparties dans une série de zones (appelées pages) comportant chacune un champ de points de données contenant des données binaires correspondant à la présence ou à l'absence d'un trou. Les données sont illuminées par une source de lumière modulable (150) et un réseau de petites lentilles diffractives de formation d'image (210), à raison d'un réseau par page de données, projette l'image sur un réseau commun de capteurs de lumière (270).

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