Sensing and correcting angular orientation of holographic media in a holographic memory system by partial reflection, the system including a galvano mirror
AssigneeInPhase Technologies, Inc.
InventorsBrian S. Riley, Aaron Wegner
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Abstract
A holographic memory system is disclosed. The holographic memory system comprises: a light source configured to generate a light beam; a photosensitive holographic storage medium configured to at least partially reflect the light beam; and an alignment module configured to determine an angular orientation of the storage medium based on the reflected light beam.
Claims66
A holographic memory system comprising:
- a light source to generate a light beam;
- a second light source to generate a non-coherent light beam;
- a photosensitive holographic storage medium having an anti-reflective coating configured to partially reflect said non-coherent light beam incident on said photosensitive holographic storage medium to produce a reflected light beam;
- and
- an alignment module, including a galvano mirror, configured to determine and correct an angular orientation of said photosensitive holographic storage medium based on said reflected light beam.
An alignment module positioned in a holographic memory system having a photosensitive holographic storage medium therein comprising:
- a reflection sensor module, including a galvano mirror, configured to detect a reflected non-coherent light beam partially reflected from said photosensitive holographic storage medium, the light beam incident on said photosensitive holographic storage medium, wherein said photosensitive holographic storage medium has an anti-reflective coating, and to generate a signal representing a location and correction of said reflected light beam on a sensor of said reflection sensor module.
A method of operating a holographic memory system having a photosensitive holographic storage medium positioned therein comprising:
- (a) generating a non-coherent light beam;
- (b) reflecting a portion of said light beam from said photosensitive holographic storage medium, wherein said photosensitive holographic storage medium reflecting said portion of said light beam has an anti-reflective coating;
- and
- (c) sensing and correcting, by use of a galvano mirror, an angular orientation of said storage medium based on said reflected light beam.
A holographic memory system comprising:
- a non-coherent light source configured to generate a light beam;
- a photosensitive holographic storage medium configured to partially reflect said light beam incident on said photosensitive holographic storage medium to produce a reflected light beam and to substantially transmit said light beam incident on said photosensitive holographic storage medium to produce a transmitted light beam;
- and an alignment module, including a galvano mirror, configured to determine and correct an angular orientation of said photosensitive holographic storage medium based on said reflected light beam.
Dependencies are inferred from the claim text.