Laser diode collimating system
AssigneeFujifilm Electronic Imaging Ltd.
InventorsGrahame Bradburn, Norihisa Takada
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Abstract
A laser diode collimating system comprises a collimating lens for receiving a laser beam from a laser diode LD. First and second orthogonally arranged cylindrical lenses are provided through which the laser beam passes. The cylindrical lenses are positioned so as to have a substantially common focal plane and operate substantially independently on the divergence and/or convergence of the laser beam in its fast axis and slow axis directions respectively. A convex lens, through which the beam passes, has a focus lying in the said common focal plane.
Claims11
A laser diode collimating system comprising a collimating lens for receiving a laser beam from a laser diode in use;
- first and second orthogonally arranged cylindrical lenses through which the laser beam passes, the lenses being positioned so as to have a substantially common focal plane and operating substantially independently on the divergence and/or convergence of the laser beam in its fast axis and slow axis directions respectively;
- and a convex lens through which the beam passes, the convex lens having a focus lying in the said common focal plane.
Dependencies are inferred from the claim text.