Optical information recording medium

Details Optical information recording medium Optical information recording medium

G - Physics

11

B

352/32.4

G11B 7/24 (2006.01) G11B 7/0045 (2006.01)

Patent

CA 1326710

ABSTRACT An optical information recording medium comprising a light transmitting substrate, a light absorptive layer overlaying the substrate to absorb a laser beam and a light reflective layer overlaying the light absorptive layer, wherein an optical parameter represented by p = nabsdabs/.lambda. where nabs is the real part of the complex refractive index of the light absorptive layer, dabs is the thickness of the light absorptive layer and .lambda. is the wavelength of a reading laser beam, is 0.05 ? p ? 0.6, and the imaginary part kabs of the complex refractive index of the light absorptive layer is at most 0.3.

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