Optical storage system having expanded capacity

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

1985-02-27

1988-10-25

Michl, Paul R.

Radiation imagery chemistry: process, composition, or product th

Imaged product

Structurally defined

430 17, 430 18, 430 20, 430944, 430945, 428 1, G02F 103, C09K 1900

Patent

active

047803835

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 expanded when compared to conventional optical storage media.

REFERENCES:
patent: 4637896 (1987-01-01), Shannon
Kim Bergheim et al., "Lasers Enhance Mass Storage: Optical Disks are About to Bring a New Technology into Common Use", Infoworld, Jun. 25, 1984, pp. 40-45.
Richard Cunningham, "Erasable Optical Storage Moves Forward: Erasability is the Next Key Millstone, in Optical Data Storage"; Lasers and Applications, May 1984, pp. 109-112.
Robert Hirshon, "Optical Storage Meets Increased Data Demands", Electronic Imaging, Mar. 1984, pages unknown.
John Robinson, "Optical Disks Offer High-Volume Alternatives to Traditional Peripherals", Computer Technology Review, Fall 1984, pages unknown.
Masud Mansuripur, "Technology Trends: Disk Storage: Magneto-Optics Leads the Way", Photonics SPECTRA, Oct. 1984, pp. 59-62.
Edward S. Rothchild, "Optical Memory: Data Storage by Laser", Byte, Oct. 1984, pp. 215-224.
Albert R. Tebo, "Optical Recording and Storage Media" Electro-Optics, Mar., 1983, pp. 30-34.
Martin Marshall, "Optical Disks Excite Industry", Electronics, May 5, 1981, pp. 97-102.
Di Chen, "Overview of Commercially Available Optical Data Storage Technology Provided at OSA/IEEE Meeting" Laser Focus/Electro-Optics, Aug. 1984, pp. 42-48.
J. Timothy Riordan, "Optical Data Storage: Media is the Answer", Photonics Spectra, Jul. 1984, pp. 45-51.

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