Optical storage system having expanded capacity

Details Optical storage system having expanded capacity Optical storage system having expanded capacity

G - Physics

11

B

42/2, 352/32.4

G11B 7/24 (2006.01) G11B 7/0045 (2006.01) G11B 7/247 (2006.01) G11B 7/25 (2006.01) G11B 11/00 (2006.01)

Patent

CA 1230484

OPTICAL STORAGE SYSTEM HAVING EXPANDED CAPACITY Abstract The present invention relates to a process for optical storage which utilizes a photopolymerizable liquid crystalline material having cholesteric optical properties. By selectively adjusting the reflectance or transmittance properties of the recording medium such that specific wavelength bands of light are reflected or transmitted, and then substantially permanently fixing the reflectance or transmittance characteristics of the film by photopolymerization, multiple wavelength-dependent information can be stored in each dot. Accordingly, the capacity of the recording medium is substantially expan- ded when compared to conventional optical storage media.

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