Optical disc device

Details Optical disc device Optical disc device

2011-06-07

2011-06-07

Giesy, Adam R (Department: 2627)

Radiant energy

Photocells; circuits and apparatus

Photocell controls its own optical systems

C250S201200, C250S201400, C347S242000, C347S257000

Reexamination Certificate

active

07956312

ABSTRACT:
An optical disc device comprising: first and second laser diodes to radiate first and second laser beams with different first and second wavelengths, respectively; a first objective lens to irradiate the first laser beam to reflection area to read out image recording control data for controlling record of image recorded in the reflection area on label side of optical disc; a second objective lens to irradiate the second laser beam to image recording area to record image in the image recording area on the label side after reading out the data; a lens holder that the lenses are fixed thereon to be arranged side by side in radial direction, to be displaced in direction toward signal side and the radial direction; and a control unit to obtain distance between the lenses in the radial direction to calibrate recording position of image signal recorded in the image recording area.

REFERENCES:
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patent: 7435934 (2008-10-01), Park et al.
patent: 2006/0018214 (2006-01-01), Fujii et al.
patent: 2007/0279480 (2007-12-01), Asano
patent: 9-212905 (1997-08-01), None
patent: 2001-344803 (2001-12-01), None
patent: 2005-093052 (2005-04-01), None
patent: 2005-216468 (2005-08-01), None

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