Matsushita Electric Industrial Co., Ltd.

Yuji Uesugi

Yukio Nishikawa

Koji Funami

Toshiharu Okada

Katsuhiro Kuriyama

Izuru Nakai

Shinichi Suzawa

Kunio Oshima

Masashi Makino

Naomi Nishiki

Kazumi Ishimoto

Yasuo Izumi

Yutaka Makino

Tadao Shioyama

Yoshikazu Iwai

Kiyohito Miwa

Noriyuki Inagaki

Shoro Mochida

Ayumu Takakuwa

Akihito Shinohara

Koji Kunami

Junichi Hikino

Kazuyoshi Yamaguchi

Tosinobu Yokoyama

Kiyotaka Ihara

A method of manufacturing a shadow mask assembly, in which a shadow mask is fastened to a support frame in a tensioned state, includes applying a preliminary tension force with a magnitude of 9.8 to 490 N to the four corners of the shadow mask outwardly aslant with respect to sides of the shadow mask. A main tension force is then applied to each of at least a pair of mutually opposite sides of the shadow mask outwardly perpendicularly to the sides. Thereafter, the shadow mask to which the main tension forces have been applied is fastened to the frame side of the support frame.

Shadow mask assembly manufacturing method and cathode ray tube manufacturing method

A laser processing method is to be executed by a pair of turning mirrors of which axes of rotation are arranged in mutually twisted positions, a flat field lens for converging a laser beam reflected on the pair of turning mirrors on a specified plane, and an X-Y stage which carries and moves thereon an object to be processed to which the laser beam is applied, the object having a plurality of rectangular planar areas of the same shape as each other in a matrix form and adjoining the rectangular planar areas while not overlapping the rectangular planer area nor leaving any space therebetween. The method includes a first step of executing application of the laser beam of which a laser applying position is determined by the pair of turning mirrors and the flat field lens to one of the rectangular planar areas of the object, a second step of moving an X-axis stage or a Y-axis stage of the X-Y stage after the first step is completed, a third step of executing application of the laser beam to one of the rectangular planar areas which is adjacent to the rectangular planar area to which the latest application of the laser beam is performed, and a fourth step of executing the second and third steps alternately to process the plurality of rectangular planar areas of the object.

Laser processing method

A laser processing apparatus includes a laser beam source, a focusing optical system for focusing a laser beam from the source as a processing laser beam to a surface of an article, an illuminating optical system using a laser beam of the same frequency as that of the processing laser beam as an illumination laser beam for illuminating the surface of the article, and a photographing device for detecting the illumination laser beam reflected from the article through the focusing optical system to thereby monitor a position to be processed. Since the laser beam of the illuminating optical system is of the same frequency as that of the processing beam chromatic aberration is prevented. This allows increased monitoring accuracy so that an article such as copper foil can be processed by a laser beam with an accuracy of 10 microns to monitor and correct a processing position.

Apparatus for laser processing and monitoring

A laser processing method is carried out by a laser apparatus comprising: an oscillator; a spatial filter comprising a first convex lens, a member having a pinhole portion, and a second convex lens on an optical axis of the laser beam from an oscillator; two galvano-mirrors; and an f.theta. lens. The method includes: emitting a laser beam from the oscillator, focusing the laser beam by the first convex lens, removing non-focusing components in a peripheral portion of a focusing spot performed by the first convex lens by passing the laser beam which has passed through the first convex lens through the pinhole portion, a focal distance of the first convex lens being set so that a focusing diameter of the laser beam at the pinhole portion of the member is equal to or smaller than a focusing diameter of the laser beam which has passed through the f.theta. lens, restoring the laser beam which has passed through the pinhole portion into a parallel laser beam by the second convex lens, scanning the laser beam which has passed through the second convex lens by means of the two galvano-mirrors, and focusing the scanned laser beam by means of the f.theta. lens on a work to execute processing of the work.

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.

Laser optical device

A polygon mirror includes a polygon base having a plurality of attaching surfaces, a plurality of base plates each of which is fixed to each of the attaching surfaces of the base and has a reflecting surface for reflecting a laser beam, a plurality of total reflection mirrors each of which is fixed onto each of the base plates, and a reflecting direction adjusting mechanism. The reflecting direction adjusting mechanism connects the base to the base plate for the adjustment of a direction along which the laser beam is reflected by the reflecting surface of the total reflection mirror with respect to the attaching surface of the base.

Polygon mirror

A method of winding a long sheet continuously around the plate bobbin comprises the steps of repeatedly moving in one direction on an approximately circular locus a rotary shaft for winding, rotating the plate bobbin, repeating on a certain moving locus, repeatedly moving in the same direction or reciprocatingly the rotary shaft of the nip roll so that a nip roll disposed in an approximately parallel to the rotary shaft of the plate bobbin continuously move in one direction along the surface of the plate bobbin rotating from above the above described long sheet, depressing the long sheet against the above described plate bobbin so as to continuously wind it, thereby to wind a long sheet around a plate bobbin with better accuracy, higher speed without the air swallowing operation.

Method and apparatus for plate winding of long sheet

A method is disclosed for manufacturing a lens array optical system including a flat glass plate and lenses each of which has a flat surface and a curved surface. The method includes the steps of removably fixing each lens with a first adhesive agent to a lens holder having lens holding portions corresponding to the curved surfaces of the lenses, polishing the flat surface of the lenses and the lens holder so that the polished flat surface of the lenses are flush with a polished flat surface of the lens holder, fixing the lenses to said flat glass plate with a second adhesive agent by pressing the lenses against the flat glass plate and hardening the second adhesive agent, and removing the lens holder from the lenses.

Method for manufacturing lens array optical system

A film material for manufacturing film carriers and its manufacturing method wherein the film material common in all may be applied with respect to the various semiconductor chips which are different in the electrode layout, because the inner lead portions for bump connection use which are required to be changed each time the electrode layout of the semiconductor chip changes are not pattern formed, and are kept as the inner lead forming portion with the whole remaining covered with the conductive metallic layer, and, the manufacturing apparatus for etching mask and model and so on have only to be one in type.

Film material for manufacturing film carriers having outer lead portions

A laser cutting method for a glass material, includes steps of forming a continuous scribing line at least on one side face of the glass material, and projecting a laser beam onto the scribing line. A laser cutting apparatus for effecting the laser cutting method, includes a laser oscillating source for emitting the laser beam, a light condensing device for condensing the laser beam onto a surface of the glass material, a scribing device for forming the scribing line on the surface of the glass material, and a displacing device for displacing the laser beam on the scribing line following movement of the scribing point.

Laser cutting method and apparatus for effecting said method

A laser beam machining device having aspherical lenses for uniformity of the cross section intensity of a laser beam emitted from a laser oscillator, and converging optical unit composed of a plurality of converging lenses disposed to be aligned in single or plural rows on a plane in the optical path of the uniform laser beam, whereby uniform machining can be performed in the middle and at the edges of the machining area and the allowable machining area can be made wider.

Laser beam machining device

Piezo-electric oscillators are widely used in reference clocks for various apparatus. Prior to use, the oscillation frequency of the piezo-electric oscillators is generally finely adjusted. For this purpose, a frequency fine-adjusting apparatus includes a laser beam generator for emitting a laser beam having a wavelength of 2 .mu.m or less, a target material having a metallic layer, a set of rollers for feeding the target material in the condition in which the metallic layer confronts the main electrode of the piezo-electric oscillator and is spaced a predetermined length from the main electrode, and an optical system for applying the laser beam to the metallic layer. When the laser beam is applied to the metallic layer, part of the metallic layer is vaporized and adheres to the surface of the main electrode, thereby finely adjusting an oscillation frequency of the piezo-electric oscillator.

Frequency fine-adjusting apparatus for a piezo-electric oscillator

A method of making a magnetic recording and/or reproducing head having a head support and a head core. The head core is inserted in a slit defined in the head support and is retained in position on the head support by means of a fixing jig to hold the head core immovable relative to the head support. Thereafter, a glass frit for temporarily fixing the head core relative to the head support is fused by the application of a laser beam to partially connect the head core and the head support together. After the fixing jig has been removed and a glass frit has been mounted on the head support so as to cover the slit above the head core, the assembly is loaded into a heating furnace to fuse the glass frit thereby to permanently interlock the head core and the head support together.

Method of making magnetic transducer

A method of making a laminated film capacitor comprising a plurality of dielectric layers and a corresponding number of film electrodes which are alternately laminated one above the other with peripheral edges of both of the dielectric layers and film electrodes being exposed to the outside of the capacitor through a peripheral cut side face defined in such capacitor. Each of the dielectric layers is made of material having a lower UV laser beam absorptivity than that of material for each of the film electrodes. A UV laser beam is radiated to the peripheral cut side face to preferentially remove the peripheral edges of the film electrodes which are situated adjacent to the peripheral cut side face of the capacitor.

Growing community of inventors

Osaka, Japan

Yuji Uesugi