An optical recording medium includes a support substrate and two
information recording layers, an information recording layer close to a
light incidence plane through which a laser beam is projected including a
first dielectric film, a second dielectric film and a recording layer
disposed between the first dielectric film and the second dielectric film
and a thickness of each of the first dielectric film and the second
dielectric film being determined so as to be equal to or larger than D21
and equal to or smaller than D22, where D21 is smaller than D2, D22 is
larger than D2, and D21 and D22 are determined in such a manner that the
dependency X of light transmittance of the information recording layer
close to the light incidence plane on the wavelength of a laser beam is
smaller than 1.2X2 when each of the first dielectric film and the second
dielectric film has a thickness of D21 to D22, where X2 is the wavelength
dependency corresponding to a second smallest thickness among a plurality
of thicknesses at which the dependency X of light transmittance of the
information recording layer close to the light incidence plane on the
wavelength of a laser beam locally becomes minimal. According to thus
constituted optical recording medium, it is possible to markedly reduce
the dependency of light transmittance of the information recording layer
close to the light incidence plane on the wavelength of the laser beam.