Patent ID: 7095706

Claim:
An optical information recording medium comprising: a first information substrate comprising: a first substrate having a guide groove thereon, a first recording layer comprising a dye, overlying the first substrate; and a first reflective layer being a semi-transmittance layer, located overlying the first recording layer; a second information substrate comprising: a second substrate having a guide groove thereon, a second reflective layer, located overlying the second substrate; a second recording layer comprising a dye, located overlying the second reflective layer; and a light transmittance protective layer located overlying the second recording layer; and a transparent intermediate layer, wherein the first information substrate and the second information substrate are attached to each other by an intermediary of the transparent intermediate layer with the first substrate and the second substrate outside and wherein the following relationships (1) and (2) are satisfied: 0.3≦nd/λ≦0.7, wherein n represents a refractive index of the light transmittance protective layer, d represents a thickness of the light transmittance protective layer, and λ is at least one of a recording wavelength and a playback wavelength, (2) k≦0.05, wherein k represents an absorption index of the light transmittance protective layer of the complex refractive index n-ik.