| 摘要 |
PROBLEM TO BE SOLVED: To provide a recording power controller for a light beam capable of making it optimum power on its recording position while performing recording operation. SOLUTION: In the recording power controller for the light beam in an optical information recorder containing photodetectors respectively light-receiving a reflection beam of a recording light beam SpO and the reflection beam of an adjusting light beam emitted simultaneously with the recording light beam on the back side of this recording light beam in the recording direction of information on a DVD-R 1, a recording power setting means 11 setting the recording power of the recording light beam SpO based on an output signal from the photodetector light-receiving the reflection beam from the adjusting light beam Sp-1 is provided. |
