| 摘要 |
Provided is an optical disc device capable of smoothly and adequately setting laser power even when an outgoing wavelength is shifted. A wavelength compensation table for associating a laser wavelength with a compensation factor is recorded in advance in a disc using a wobble, a pit, or the like. When the disc is set, a controller reads out the wavelength compensation table from the disc and causes an internal memory thereof to store it. A wavelength of outgoing laser light is determined based on temperature information supplied from a temperature sensor during OPC. Compensation factors alpha 1 and alpha 0 respectively corresponding to the determined wavelength and a reference wavelength are obtained from the wavelength compensation table. Initial power Pw 1 for OPC to be set is calculated using initial power Pw 0 and the compensation factors alpha 1 and alpha 0 by Pw 1 =Pw 0 x(alpha 1/alpha0 ).
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