Patent application number | Description | Published |
20080210886 | Laser processing method and laser processing apparatus - The present invention relates to a laser processing method and the like having a structure for making it possible to process an object to be processed in various ways while accurately adjusting the installation state of the object. The method irradiates the object with plural adjustment laser light beams that are set in a specific positional relationship against a converging point of processing laser light beam, and adjusts the state of installation of the object while monitoring irradiation areas of the adjustment laser light beams on the surface of the object. Each irradiation directions of adjustment laser light beams is different from that of the processing laser light beam. By reflecting the irradiation condition of the adjustment laser light beam and monitored information of the irradiation areas in positional adjustment of the object, the installation state of the object can be adjusted in accordance with various kinds of processing. | 09-04-2008 |
20080235945 | Electrical connection method for plural coaxial wires - The present invention relates to a method of properly connecting respective shields in a plurality of extra fine coaxial wires via a common conductive member. The plurality of coaxial wires having the shields that are partially exposed is arranged in parallel. A metal adhesive material is placed on the respective shields in the coaxial wires and is melted by being irradiated with laser light. Then, the respective shields are connected electrically via the common conductive member when the common conductive member is placed on the melted metal adhesive material. | 10-02-2008 |
20090091839 | LIGHT SOURCE APPARATUS AND OPTICAL MODULE INCLUDED THEREIN - The present invention relates to a light source apparatus or the like provided with a structure that can block reflected return light also when an emitting end side of an optical isolator is a space. The light source apparatus comprises a light source section, a guide section, and an optical module. The optical module includes a collimator, an optical isolator, and an oblique-beam blocking section. The collimator outputs collimated light with a predetermined beam diameter as a forward propagating beam. The optical isolator is a polarization-independent optical isolator that introduces the collimated light from a first end and outputs this collimated light from a second end. The oblique-beam blocking section includes first and second optical components each having a window of a diameter D, and blocks light incident at a predetermined angle relative to an optical axis of the forward propagating beam out of a backward propagating beam, by separating the first and second optical components from each other by a predetermined distance. | 04-09-2009 |
20090095723 | LASER PROCESSING METHOD - The present invention relates to a laser processing method capable of arbitrarily controlling a concentration distribution of an assist gas supplied for an object having a complicated surface, together with a laser beam. In the case of laser-processing a tape-shaped cord including several coaxial cables, the method is applied for cutting ground lines surrounding each coaxial cable. Prior to a laser irradiation, at the tip portion of the cord, a flow pathway for the assist gas is ensured between the coaxial cables by removing the resin covering each surface of the coaxial cables. Since each coaxial cable has a non-flat shape, a first surface domain, on which the laser beam is incident at an approximate right angle, and a second surface domain, on which the laser beam is incident at a smaller angle, exist in each surface of the coaxial cables. The second surface domain constitutes part of a wall of the flow pathway for the assist gas, and therefore the concentration of the assist gas in the vicinity of the second surface domain increases rather than that of the assist gas in the vicinity of the first surface domain. As a result, a sufficient laser processing efficiency can be ensured even in the second surface domain on which a laser processing efficiency remarkably decreases. | 04-16-2009 |
20090108173 | LASER PROCESSING APPARATUS AND LASER PROCESSING METHOD - The present invention relates to a laser processing apparatus and the like having a structure for implementing at the same time both an efficient laser processing in the place where a laser beam is difficult to reach and a laser processing without damages in the place where the laser beam is easy to reach. This laser processing apparatus comprises a laser light source, an irradiation optical system applying a laser beam to an object while scanning the laser beam, a photo-detector detecting the laser beam applied from the irradiation optical system, and a control section of making switching between a continuous oscillation and a pulse oscillation of the laser beam at the laser light source. In particular, the control section makes a continuous oscillation of the laser beam with respect to the laser light source in the case in which the laser beam applied from the irradiation optical system is detected at the photo-detector; while it makes a pulse oscillation of the laser beam with respect to the laser light source in the case in which no laser beam applied from the irradiation optical system is detected at the photo-detector. | 04-30-2009 |
20090242523 | LASER PROCESSING METHOD - The present invention relates to a laser processing method that makes it possible to effectively suppress the generation of surface irregularities on the surface of a plastic member where a metal member and a plastic member are joined together. In the laser processing method, a plurality of laser beams are irradiated from different directions so as to focus on the vicinity of an interface between the metal member and the plastic member, which are in contact with one another. The power densities of the respective laser beams at this time are set to a level not more than a level, at which the exposed surface of the plastic member on the side opposite to the interface between the metal member and the plastic member, does not melt. As a result of this, air bubbles or the like are not generated in the vicinity of the exposed surface of the plastic member, and the generation of surface roughness on the exposed surface of the plastic member is effectively suppressed. | 10-01-2009 |
20090272877 | METHOD AND APPARATUS OF MEASURING BACKWARD LIGHT, AND LASER PROCESSING METHOD - The present invention relates to a method of measuring backward light, which is constructed for checking, prior to laser processing, backward light that propagates backward through an isolator included in a laser processing apparatus. The present invention also relates to a laser processing method and the like. A laser processing apparatus has an optical head provided with a laser light source part, light guide, and isolator. The optical head has an emitting optical system, irradiation optical system, and light collecting optical system. The method of measuring backward light uses a photodetector to detect, from reference light introduced from a measurement light source into the optical head, the power of an optical component that has passed through the isolator, while changing the position of the measurement light source. The laser processing method performs laser processing by using the laser processing apparatus that has the optical head in which the arrangement of optical components is adjusted beforehand on the basis of the result of detection or result of measurement. | 11-05-2009 |
20090277884 | SURFACE MODIFICATION METHOD - The present invention relates to a surface modification method allowing the surface of a subject to be more effectively modified. In a pulsed-laser device suitable for use in this surface modification method, a semiconductor laser light source and a modulator constitute a seed light source. The seed light output from the seed light source is amplified by fibers for optical amplification, and the amplified light constitutes output from the pulsed-laser device. The pulsed-laser device allows the pulse width and repetition frequency of the output pulsed-laser light to be varied independently of each other. The pulse width of the pulsed-laser light output from the pulsed-laser device is preferably not more than 10 ns, and the repetition frequency is preferably at least 50 kHz. | 11-12-2009 |
20090277885 | LASER PROCESSING APPARATUS AND LASER PROCESSING METHOD - The present invention relates to a laser processing apparatus having a structure for effectively processing of objects by condensing a laser beam, and a laser processing method. A laser processing apparatus comprises a common mount surface on which plural objects are disposed in an array, a light source, a lens the reflection direction of which is changeable, and a condensing direction modifier. A laser beam from the light source arrives at the lens through a galvano-mirror. Herein, the galvano-mirror is arranged such that the reflection position thereof agrees with the front focal position of the lens. As the galvano-mirror reflects a laser beam toward the lens while the reflection direction is changed, the arriving position of the laser beam is scanned on the entrance surface of the lens. The condensing direction modifier modifies, according to the irradiation position of the laser beam arrived from the lens, an exit direction of the laser beam. | 11-12-2009 |
20100033548 | LASER MARKING METHOD - The present invention relates to a laser marking method which is capable of changing the grey level of a marking even in the case of a high processing speed. The laser marking method forms a marking pattern on a marking object by irradiating the marking object with pulsed light oscillated from a pulsed light source of a MOPA structure in which a semiconductor laser outputting directly-modulated pulsed light is used as a seed light source. At this time, the pulse duration of the pulsed light is changed in order to change a gray level of the marking pattern to be formed. In this way, a peak power of the pulsed light is changed by changing the pulse duration, so that it is possible to positively change the gray level of the marking pattern without changing the processing speed. | 02-11-2010 |
20100142565 | LASER LIGHT SOURCE - The present invention relates to a laser light source having a structure that has high durability to support high power output. The laser light source is an optical device that pulse-oscillates laser light and has a resonator, a rare earth element doped fiber, pumping means, Q switch means, and a condensing lens. The resonator forms a resonance optical path. A fiber is inserted on the resonance optical path and outputs radiation light by supply of pumping energy. The pumping means continuously supplies pumping energy to the fiber. The Q switch means modulates resonator loss of the resonator. The condensing lens condenses the radiation light whose spot size has been expanded and which propagates from the fiber to the Q switch means. The Q switch means is disposed such that a portion contributing to at least a resonator loss modulation is located at the condensing point of radiation light which is condensed by the condensing lens, and mechanically changes formation and interruption of the resonance optical path by transmitting or interrupting the radiation light in the contributing portion. | 06-10-2010 |
20100202478 | Laser Light Source - The present invention relates to a laser light source having a structure for narrowing a wavelength bandwidth of output light. The laser light source comprises, at least, a laser resonator, a pumping light source, an optical path switch device, a diffraction grating, and a total reflection mirror. The laser resonator has a light amplifying fiber for output of emission light arranged on a resonance optical path thereof. The optical path switch device has a first port and a second port on the resonance optical path of the laser resonator. The diffraction grating spectrally separates the emission light outputted from the second port. The total reflection mirror reflects a specific wavelength component out of wavelength components spectrally separated by the diffraction grating, so as to feed the specific wavelength component back to the second port. Particularly, the optical path switch device controls a light transmittable state of the emission light outputted from the light amplifying fiber, at the second port. | 08-12-2010 |
20100270275 | LASER WELDING METHOD - The present invention relates to a laser welding method of welding an electrode and a cable core to each other satisfactory by irradiation of a laser beam, even when the core is thin and the area of the electrode is small. The laser welding method welds on a substrate the electrode and the core of a coaxial cable to each other by irradiation of the laser beam. The core is sandwiched between a pressing member and the electrode, while the electrode and the core are brought into contact with each other at a connection section. The pressing member is a member that is transparent to the processing laser beam. A part of the core is molten by radiating the laser beam from the pressing member side. As a result, the electrode and the core are connected with each other. | 10-28-2010 |
20110080590 | METHOD OF MANUFACTURING PREFORM FOR OPTICAL WAVEGUIDE - The present invention relates to an optical waveguide manufacturing method, which excels in mass productivity of a planar optical waveguide. In an aggregating step, plural members ( | 04-07-2011 |
20110100428 | PHOTOELECTRIC CONVERSION UNIT - A photoelectric conversion unit in which efficiency of optical coupling and stability of mechanical coupling improve is obtained. | 05-05-2011 |
20110148002 | LASER PROCESSING METHOD AND LASER PROCESSING DEVICE - The present invention relates to a laser processing method and the like which use no wavelength conversion technique by nonlinear optical crystals when selectively removing an insulating layer of a printed board, while employing only one wavelength throughout the entire removal processing. A laser processing apparatus ( | 06-23-2011 |
20120006979 | LASER PROCESSING APPARATUS AND LASER PROCESSING METHOD - The present invention relates to a laser processing apparatus and the like having a structure for implementing at the same time both an efficient laser processing in the place where a laser beam is difficult to reach and a laser processing without damages in the place where the laser beam is easy to reach. This laser processing apparatus comprises a laser light source, an irradiation optical system applying a laser beam to an object while scanning the laser beam, a photo-detector detecting the laser beam applied from the irradiation optical system, and a control section of making switching between a continuous oscillation and a pulse oscillation of the laser beam at the laser light source. In particular, the control section makes a continuous oscillation of the laser beam with respect to the laser light source in the case in which the laser beam applied from the irradiation optical system is detected at the photo-detector; while it makes a pulse oscillation of the laser beam with respect to the laser light source in the case in which no laser beam applied from the irradiation optical system is detected at the photo-detector. | 01-12-2012 |