Registers – Coded record sensors – Particular sensor structure
Reexamination Certificate
2006-05-23
2006-05-23
Le, Thien M. (Department: 2876)
Registers
Coded record sensors
Particular sensor structure
C235S462250
Reexamination Certificate
active
07048190
ABSTRACT:
The present invention relates to an apparatus and method for reading information from and recording information to a diffractive optics memory using symmetrical angular encoding. A coherent light source is split to form an object beam and a corresponding reference beam. An optical axis is defined by the object beam being aligned perpendicular to a plane of the diffractive optics memory. A steering mirror is configured to direct the reference beam received from the coherent light source to the memory. A first plurality of mirrors arranged around one side of the optical axis receives the reference beam from the steering mirror and directs the reference beam at a first angle towards the memory. A second plurality of mirrors arranged around the symmetrical side of the optical axis receives the reference beam from the steering mirror and directs the reference beam at a second angle towards the memory. The first angle is identical to the second angle but formed on the symmetrical side of the optical axis.
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El Hafidi Idriss
Fontaine Joël
Grzymala Romualda
Meyrueis Patrick
Do Caroline T.
Le Thien M.
Research Investment Network, Inc.
Wong Steve A.
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