Back to results
US 5,477,384 AGranted
Laser optical device
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorsYukio Nishikawa, Yuji Uesugi
Life of this patent
Estimating the term…
Abstract
A laser optical device includes a laser oscillator, a beam shaping optical device for shaping a laser beam emitted from the oscillator to form a shaped laser beam, and a plurality of incidence lenses arranged to make the portions of the shaped laser beam incident on the incidence lenses equal. The device further includes beam transmitting optical fibers for receiving laser beams into which the laser beam passed through the incidence lenses is divided.
Claims16
A laser optical device comprising:
- a laser oscillator;
- a beam shaping optical means for shaping a laser beam emitted from said oscillator to form a shaped laser beam;
- a plurality of incidence lenses arranged in such a manner as to respectively receive equal quantities of radiant power from said shaped laser beam;
- wherein said beam shaping optical means is operable to shape the laser beam emitted from said oscillator into a shape having a ring-shaped cross section;
- and
- wherein said incidence lenses are arranged in an annular configuration such that, when the laser beam is emitted from said oscillator, an equal portion of said ring-shaped cross section of the shaped laser beam is incident on each of said incidence lenses.
3 more elements
A laser optical device comprising:
- a laser oscillator;
- a beam shaping optical means for shaping a laser beam emitted from said oscillator to form a shaped laser beam;
- a plurality of incidence lenses arranged in such a manner as to respectively receive equal quantities of radiant power from said shaped laser beam;
- wherein said beam shaping optical means is operable to shape the laser beam emitted from said oscillator into a shape having an elongated cross section;
- and
- wherein said incidence lenses are arranged in an elongated configuration and have respective surface areas which vary depending on their location along said elongated configuration.
3 more elements
A laser optical device comprising:
- a laser oscillator;
- a beam shaping optical means for shaping a laser beam emitted from said oscillator to form a shaped laser beam;
- a plurality of beam transmitting optical fibers provided at a plurality of locations, respectively;
- a plurality of incidence lenses arranged in such a manner as to respectively receive equal quantities of radiant power from said shaped laser beam;
- wherein said incidence lenses constitute means for focusing said equal quantities of radiant power on said locations, respectively, and for correcting spherical aberration, such that each of said incidence lenses constitutes an incidence lens of an individual one of said optical fibers;
- and
- wherein said plurality of incidence lenses are arranged so as to together receive substantially all radiant power of said shaped laser beam.
4 more elements
Dependencies are inferred from the claim text.