Patent
Multiple split-beam laser processing apparatus generating an array of focused beams
Nobuaki Furuya,Gen Oda,Kouki Ichihashi +2 more
- 26 Oct 1993
91
TL;DR: In this paper, the optical fibers are shaped such that they have a sufficiently large value of minimum radius of curvature to ensure that a small angle of divergence is maintained for each of the beams emitted from the fibers, thereby ensuring that the converging lenses can be small and inexpensive.
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Abstract: A laser processing apparatus includes a plurality of optical fibers formed into a bundle which is shaped such as to efficiently divide a laser beam into a plurality of split beams and transmit the split beams to respective converging lenses to be focused to have a high energy density when incident on respective workpieces. The optical fibers are shaped such as to each have a sufficiently large value of minimum radius of curvature to ensure that a small angle of divergence is maintained for each of the beams emitted from the fibers, thereby ensuring that the converging lenses can be small and inexpensive.
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Citations
Patent
Apparatus and method for laser scribing a coated substrate
Ricky C. Powell
- 07 Dec 1999
TL;DR: In this paper, a rotating polygonal mirror is used to split a pulsed laser beam in order to provide spaced ablations in a coating on the substrate, and a controller allows a second set of scribes to be generated with reference to the first set.
120
Patent
Semiconductor structure processing using multiple laterally spaced laser beam spots delivering multiple blows
Kelly J. Bruland,Brian W. Baird,Ho Wai Lo +2 more
- 04 Feb 2005
TL;DR: In this article, a semiconductor substrate is arranged in a plurality of substantially parallel rows extending in a generally lengthwise direction, and a first laser beam propagates along a first beam axis that intersects a first target location on or within the substrate.
117
Patent
Waveguide type compact optical scanner and manufacturing method thereof
David Heard,Noboru Ohtani,Yutaka Unuma,Manabu Fujimoto +3 more
- 12 Jul 1996
TL;DR: In this paper, a waveguide type reduction type image sensor has a light source having a light emitting element and a substrate including optical waveguides having a planar waveguide and a tapered waveguide.
116
Patent
Laser machining device
Masahiko Sakamoto,Shozui Takeno,Yasuhiko Iwai,Toshiyuki Hokodate,Miki Kurosawa +4 more
- 13 Mar 2012
TL;DR: In this paper, a laser machining device with a laser oscillator for generating a laser beam, a main deflecting galvannometer mirror, an Fθ lens, and a sub-deflecting means arranged in an optical path between the laser oscillators and the main galvanometer mirror is described.
114
Patent
Methods and apparatus for imaging using a light guide bundle and a spatial light modulator
Calum MacAulay,Andrew L. P. Dlugan,Pierre Lane +2 more
- 14 Dec 2000
TL;DR: In this article, the authors present a method for mapping the pixels of the spatial light modulator to the cores of the light guides in the bundle (preferably at least 3 pixels (e.g., at least three mirrors for a digital micromirror device) for each core), as well as for mapping light guides of one light guide bundle to another.
105
References
Patent
High power laser energy delivery system
Marshall Gordon Jones
- 09 Oct 1984
TL;DR: In this paper, a low-divergence 1.06 micrometer wavelength beam from a total-internal-reflection, face-pumped laser (TIR-FPL) is focused onto the end of a quartz optical fiber to a spot having a size smaller than the fiber diameter and with a beam cone angle less than twice the numerical aperture of the fiber.
79
Patent
Fiber optic beam delivery system for high-power laser
Robert C. Kocher
- 04 Sep 1985
TL;DR: In this article, a system for delivering a high-power laser beam through a fiber optic cable to a metal workpiece for drilling, cutting or welding the workpiece is described.
63
Patent
Optical fiber device for the transportation and focalization of laser radiation
Giancarlo C. Righini,Vera Russo,Stefano Sottini +2 more
- 24 Jun 1980
TL;DR: An optical fiber device for the transportation and focalization of laser radiation was proposed in this paper, where the output terminal of the device presents a convex surface which may be spherical.
57
Patent
Multi-fiber optical coupler for a high power laser beam
Angel L. Ortiz,Tushar S. Chande +1 more
- 02 May 1988
TL;DR: In this paper, an optical fiber coupler for coupling a high power laser beam delivered by an incoming fiber into multiple outgoing fibers is disclosed, where the beam emitted from the incoming fiber is collimated and split into multiple split beam portions for injection into the respective multiple outgoing fiber.
17