This invention relates to a manufacturing method for an optical information
recording medium and a manufacturing device for an optical information
recording medium, and is applicable for instance to devices for optical
disks, capable of focusing a laser beam from an exposure semiconductor
laser at high density onto a base disk. This invention compensates the
chromatic aberrations of the objective lens with a chromatic aberration
optical system or compensates for fluctuations in the wavelength by
regulating the temperature of the semiconductor laser.
