Temperature sensor and method for optical disk

Details Temperature sensor and method for optical disk Temperature sensor and method for optical disk

1995-03-07

1997-03-04

Ryan, Patrick

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428 642, 428 644, 428 648, 428913, 4302701, 43027011, 43027014, 4304951, 430945, 3692751, 369283, 369288, B32B 300

Patent

active

056077394

ABSTRACT:
An optical disk is disclosed which includes a substrate and a reflector layer disposed on the substrate. At least one temperature sensitive layer disposed on the reflector layer, the sensor material being selected such that its reflectivity changes as a function of the disk temperature. Finally, a transparent overcoat over the substrate or reflector layer disposed so that incident light passes through the transparent overcoat and interacts with the temperature sensitive layer so that it provides a reflected light component, the intensity of which is temperature dependent.

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"Simple Predictive Models for the Thermal Response of Optical Data Storage Media", by B. Bartholomeusz, et al, Journal Applied Physics 66(10), Nov. 15, 1989, pp. 4635-4639.
"Influence of Laser Read and Bias Power Levels on the Performance of Thermomagnetooptic recording media", by B. Bartholomeusz, et al, Applied Optics, vol. 29. No. 20, Jul. 10, 1990, pp. 3030-3039.

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