| 摘要 |
<P>PROBLEM TO BE SOLVED: To adjust a gap with high precision and to constantly stabilize the whole system by enhancing especially the DC gain for a controller even in a near-field area, in a information recording device and method, and an information reproducing device and method to record and reproduce using evanescent light. <P>SOLUTION: When recording using evanescent light is performed, if an emitting means is located in the near field to an information recording surface 2a of an optical disk 2, a laser beam is emitted to the information recording surface 2a as the near-field light. Moreover, a first control section 72 and a second control section 73 to control a SIL 63 to maintain a predetermined distance to the information recording surface 2a, according to the return light quantity of the near-field light emitted to the information recording surface 2a, are connected in parallel. When the return light quantity of the near-field light exceeds a predetermined threshold, the output in the second control section 73 is blocked. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
