High density block oriented solid state optical memories

Details High density block oriented solid state optical memories High density block oriented solid state optical memories

1984-12-04

1987-05-05

Moffitt, James W.

Static information storage and retrieval

Information masking

Transparency

365234, G11C 1142

Patent

active

046637389

ABSTRACT:
A block oriented solid state optical memory having a distributed data storage architecture comprises a lens array including a plurality of laterally separated lenslets which have numerical apertures selected to cause them to focus essentially diffraction limited images of a photoemitter array in parallel onto laterally displaced sections of a data mask, so that the images optically align with respective photosensors. The lenslets are formed on the first surface of the lens array, and the data mask is supported on or very close to the last surface of the lens array to minimize the scattering of reflected light. An opaque light shield on the first surface of the lens array optically masks the area between the lenslets to eliminate unwanted stray light. Furthermore, in at least some embodiments of the invention, the light shield extends into the apertures of the lenslets to stop them down sufficiently to obtain substantially diffraction limited performance.

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patent: 3676864 (1972-07-01), Maure et al.
patent: 3765749 (1973-10-01), LaMacchia
patent: 3887906 (1975-06-01), Minnaja
patent: 3899778 (1975-08-01), Roberts
patent: 4425501 (1984-01-01), Stauffer
Opto-Logic Corporation, product brochure, "Slide Programmed Optical Processor Kit," Apr. 17, 1974.
Quadri Corporation, preliminary product brochure, "Model 401-22 Optical Read Only Memory".
Jackson, A. S., Compcon, (pre-presentation paper) "A New Approach to Utilization of Opto-Electronic Technology," Feb. 1974.

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