System and method for steering focal plane data to access data l

Details System and method for steering focal plane data to access data l System and method for steering focal plane data to access data l

1997-06-24

2000-05-09

Spyrou, Cassandra

Optical: systems and elements

Holographic system or element

For reconstructing image

359 22, 359 30, 359 33, 369103, 365125, 365216, G03H 122, G11C 1304, G11B 700

Patent

active

060611545

ABSTRACT:
Systems and methods for steering a complex, spatially-modulated incident beam of coherent light to gain access to data locations in a holographic memory cell (HMC). One of the systems includes: (1) a reflective element, locatable proximate a first focal plane of the incident beam, (2) a rotational steering mechanism, coupled to the reflective element, that orients the reflective element according to a desired rotational angle to steer the incident beam in a desired direction and (3) a refractive element that refracts the beam reflected from the reflective element to create a second focal plane for the beam, the HMC locatable proximate the second focal plane to receive the beam at a location thereon that is a function of the desired direction.

REFERENCES:
patent: 4155630 (1979-05-01), Ih
patent: 5436867 (1995-07-01), Mok
patent: 5659536 (1997-08-01), Maillot et al.
patent: 5822263 (1998-10-01), Campbell et al.
patent: 5835470 (1998-11-01), Campbell et al.

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