Optical information recording method and apparatus, and recorded medium where optical information recording control program is recorded

Abstract

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.