Back to results
US 5,633,761 AGranted
Laser diode module
AssigneeFujitsu Limited
InventorsYuichirou Takashima, Kozo Yamazaki, Mitsuharu Ishii, Toshimitsu Kumagai, Masanori Ohkawa
Life of this patent
Estimating the term…
Abstract
A laser diode module includes a laser diode emitting a laser beam, and a lens for collimating the laser beam. The lens is tilted with respect to an optical axis along which the laser beam is propagated.
Claims31
A laser diode module comprising:
- a base defining an upper planar mounting surface;
- a laser diode supported by the base and emitting a laser beam along an optical axis parallel to the mounting surface;
- a collimating lens supported by the base and disposed on the optical axis;
- and
- a holder holding a corresponding one of the laser diode and the collimating lens and having a lower planar mounting surface received on the upper planar mounting surface of the base and selectively and adjustably movable along the optical axis relatively to the upper planar mounting surface of the base, and to the other of the laser diode and the collimating lens, to a position at a distance between the lens and the laser diode along the optical axis selected to minimize the beam size in one of horizontal and vertical directions relative to the optical axis.
2 more elements
A laser diode module comprising:
- a base defining an upper planar mounting surface;
- a laser diode supported by the base and emitting a laser beam along an optical axis parallel to the upper planar mounting surface;
- a collimating lens supported by the base and disposed on the optical axis;
- and
- a holder holding a corresponding one of the laser diode and the collimating lens and having a lower planar mounting surface received on the upper planar mounting surface of the base and selectively and adjustably movable along the optical axis, relatively to the upper planar mounting surface of the base and to the other of the laser diode and the collimating lens, to a selected distance between the lens and the laser diode along the optical axis minimizing the beam size in one of horizontal and vertical directions relative to the optical axis.
2 more elements
Dependencies are inferred from the claim text.