| 摘要 |
<P>PROBLEM TO BE SOLVED: To highly accurately expose the groove space of a master optical disk. <P>SOLUTION: The master optical disk exposure device for mounting a master optical disk 2 on a turntable 3 supported on a moving stage 5, applying an exposure beam 1 to the master optical disk 2, and spirally recording predetermined information in the master optical disk 2 is provided with a linear encoder 15 for detecting the moving position of the moving stage 5 to output a moving position signal, a rotary encoder 15 for detecting the rotary angle of the turntable 3 to output a rotary angle position signal, a track groove space deviation calculation device 21 for calculating the deviation amount of a groove space between adjacent tracks based on the moving position signal and the rotary angle position signal, and a deflector 12 for adjusting the application position of the exposure beam 1 applied to the master optical disk 2 based on the deviation amount from the device 21. <P>COPYRIGHT: (C)2007,JPO&INPIT |
