| 摘要 |
An optical information recording medium containing a first information substrate including a first substrate having a guide groove thereon, a first recording layer including a dye, overlying the first substrate and a first reflective layer being a semi-transmittance layer, overlying the first recording layer, a second information substrate comprising, a second substrate having a guide groove thereon, a second recording layer comprising a dye, overlying the second substrate, a second reflective layer being a semi-transmittance layer, located overlying the second recording layer and a light trasnmittance protective layer overlying the second reflective layer and a transparent intermediate layer. Further, the following relationships (1) and (2) are satisfied: (1) 0.3<nd/lambda<=0.7, wherein n represents refractive index in the complex refractive index n-ik of the light trasnmittance protective layer, d represents a thickness thereof, and lambda is at least one of a recording wavelength and a playback wavelength, (2) k<=0.05, wherein k represents absorption index of the light trasnmittance protective layer of the complex refractive index n-ik.
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