An optical information recording method and a device which can record information
with a laser light irradiating direction kept constant even if an information recording
surface of an optical information recording medium is inclined and, a recording
medium having a program therefor recorded thereon are provided. When performing
OPC, a relational expression between a recording power and asymmetry (a standard
expression), a relational expression between a differential light intensity value
and a recording power (a first detection expression), a relational expression between
a recording power and a difference between a differential light intensity value
and a reflected light amount ratio (a second detection expression), a relational
expression between a reflected light amount ratio and a recording power (a third
detection expression), a differential light intensity value with which optimum
asymmetry can be obtained, a recording power, a reflected light amount ratio and
the like are determined and stored. When information is actually recorded, the
above expressions are used to correct the recording power so as to obtain optimum
asymmetry at all times, whereby a decreased portion of the irradiated light amount
per unit area caused with the inclination of the information recording surface
can be corrected without correcting the irradiating direction of the laser light.