TH10511B - Optical communication medium - Google Patents

Abstract

The optical information recording medium consists of a light-permeable base material. An absorbing layer is placed on top of the substrate to absorb the laser beam and a reflector layer is placed on the absorber layer. where the optical parameters are represented by p = nabs dabs/(formula) where nabs is the real part of the complex refractive index of the absorbing layer, dabs is the thickness of the absorbing layer, and (formula) is the wavelength of the laser beam for read para The optical meter was 0.05 <= p <= 0.6, and the imaginary kabs of the complex refractive index of the absorbance layer was the greatest of 0.3.

Claims (9)

1. Media for recording optical information It consists of a light-transmitting base material, a complex refractive index absorbing layer that comprises the true part of the index. The aforementioned complex refraction (nabs) with the imaginary part of the complex refraction index (kabs) mentioned above, the absorbing layer having a thickness (dabs) of one size, such absorbing layer. It is stacked on top of the base material to absorb the laser beam. and the reflecting layer is superimposed on the absorbance layer, here the optical parameters are denoted p = nabs dabs/(formula) where (formula) in the wavelength of the reading laser beam, corresponds to the inequality 0.05 < = p <= 0.6, and the imaginary kabs of the complex refractive index of the maximal absorbance layer is 0.3. 2. The optical information recording medium according to claim 1, here the absorbance layer consists of xianin dye, and the reflector layer is made of a metal film. 3. The medium for recording optical information according to claim 2, herein the xianin dye is indodicarboxyanin. 4. The optical information recording medium according to claim 1, here the absorbing layer consists of the material which, as the laser beam is absorbed by the absorbing layer, experiences an increase in temperature. and, at temperatures from 100 to 600 °C will experience thermal reactions with gas formation. 5. Optical information recording medium according to claim 1, here the nabs is nabs => 1.8, and the kabs is 0.001 <= kabs <= 0.3. 6. The medium for recording optical information according to claim 1, hereinafter the actual nref part of the complex refraction index of the reflector layer. With the imaginary part, the kref of the complex refraction index of the reflected layer corresponds to the relationship of kref => 2nref + 0.8. 7. The optical information recording medium pursuant to Claim 1, herein the layer for increasing the level of transparency to the wavelength of the readable laser beam is placed between the absorbing layer and the reflecting layer. 8. The medium for recording optical information pursuant to Claim 7, hereinafter the optical parameters are denoted (chemical formulas) where nabs, dabs and (formulas) are defined above, nehs is the part of The actual value of the complex refraction index of the escalation layer and dehs is the layer thickness for the escalation, where the value of the path parameter is 0.05 <= p <= 1.1. 9. Optical Recording Media According to Claim 1, herein the base material is provided with an anti-solvent layer to protect the substrate from the solvent used for layer formation. absorb light