Optical information recording medium

Active solid-state devices (e.g. – transistors – solid-state diode – Responsive to non-electrical signal – Electromagnetic or particle radiation

Reexamination Certificate

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Details

C257S432000, C257S436000

Reexamination Certificate

active

07057252

ABSTRACT:
The optical information recording medium of the present invention includes an information layer provided on a substrate. The information layer includes: a recording layer with respect to which information can be recorded and reproduced through irradiation with a laser beam having a predetermined wavelength; a first protective layer that is located, with respect to the recording layer, on the side to which the laser beam is incident; and a second protective layer that is located, with respect to the recording layer, on the opposite side to the side to which the laser beam is incident. The refractive index n1of the first protective layer and the refractive index n2of the second protective layer at the predetermined wavelength of the laser beam that is used for recording and reproduction satisfy a relationship of n2<n1.

REFERENCES:
patent: 5002812 (1991-03-01), Umehara et al.
patent: 5645908 (1997-07-01), Shin
patent: 6395366 (2002-05-01), Kim
patent: 2002/0022105 (2002-02-01), Kitaura et al.
patent: 2002-133712 (2002-05-01), None
patent: 1996-0019102 (1996-06-01), None
patent: 2001-0047949 (2001-06-01), None
Takeo Ohta, et al., “New write-once media based on Te-TeO2 for optical disks”, Proceedings of SPIE, vol. 695, 1986, pp. 2-9.
Kenichi Nishiuchi, et al., “Dual-Layer Optical Disk with Te-O-Pd Phase-Change Film”, Japanese Journal of Applied Physics, vol. 37, Apr. 1998, pp. 2163-2167.
Hiroshi Kubota, “Wave Optics”, chapter 3, Iwanami Shoten, 1971 (with partial translation).

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