Laser/detector device for optical recording with adjustable detector position
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United States of America Patent
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Oct 5, 2010
Grant Date -
Oct 27, 2005
app pub date -
Apr 26, 2004
filing date -
Apr 26, 2004
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An assembly structure and method for an integrated laser/detector device with a mirror at an angle to redirect the laser beam to a medium. The mirror is not attached to the circuit board with the laser/detector as in the prior art, but rather is mounted separately in the housing immediately above the circuit board. This allows the circuit board to be moved laterally toward and away from the mirror during assembly to adjust the reflected beam along a first direction so that it contacts the photodetector. A hologram lens is mounted above the mirror, and can be rotated to adjust the reflected beam to hit the photodetector along a second, orthogonal direction. In one embodiment, two laser beams are generated, and two hologram lenses are used to separately adjust the two beams.
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