Radiant energy – Photocells; circuits and apparatus – Photocell controls its own optical systems
Reexamination Certificate
2005-03-15
2005-03-15
Luu, Thanh X. (Department: 2878)
Radiant energy
Photocells; circuits and apparatus
Photocell controls its own optical systems
C365S107000, C365S121000, C365S151000
Reexamination Certificate
active
06867408
ABSTRACT:
A method of erasable/rewritable optical data storage is provided in which a laser beam from a laser (10) operated in either a pulsed or continuous wave mode is focussed by an optical system (11-18) onto a photorefractive polymeric material (32) to cause two photon excitation of the material to record data which may subsequently be erased by illuminating the material with radiation having a wavelength in the ultraviolet or visible spectrum to erase the recorded data. New photorefractive polymeric materials having a relatively narrow absorption band for use in the method are also disclosed.
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Optics Communications, North-Holland Publishing Co. Amsterdam, NL, vol. 128, No. 4, Jul. 15, 1996, pp. 205-210 entitled “Molecular transformation as a means for 3D optical memory devices”.
Copy of Supplemental European Search Report.
Day Daniel J
Gu Min
Smallridge Andrew J.
Luu Thanh X.
Victoria University of Technology
Westman Champlin & Kelly P.A.
Yam Stephen
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