Manufacturing method for optical head device and optical head device
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United States of America Patent
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Oct 16, 2007
Grant Date -
Apr 21, 2005
app pub date -
Aug 25, 2004
filing date -
Aug 28, 2003
priority date (Note) -
Expired
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Abstract
A manufacturing method for an optical head device includes integrating at least a plurality of light sources and a plurality of diffraction elements with each other as an optical module, adjusting a relative positional relationship of the plurality of diffraction elements each other on the optical module, and then adjusting spot positions of the sub-beams on the optical recording medium by adjusting the entire optical module on the device frame. After that, the optical module is fixed on the device frame.
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