Abstract: A robot laser processing system (10) comprises at least one robot controller (14) for controlling at least one robot, a host controller (12) connected to the robot controller through a first network (11) for overall control of the robot controller, and a plurality of laser oscillators (16-1 to 16-n) selectively connectable to the processing nozzle (35) mounted on each robot and connected to the robot controller through a second network (18-1 to 18-n). An instruction from the host controller is transmitted to the robot controller through the first network, so that the robot controller determines the laser oscillator to be controlled and directly controls the particular laser oscillator through the second network. As a result, a processing command can be issued directly to the laser oscillator from the robot controller without intervention by the host controller.

Abstract: A work mounting device in which an operation for teaching a robot to mount a work on a work mounting member is automated. The work is gripped by a hand placed on an arm tip portion of the robot and the operation for mounting the work on the work mounting member is taught. A plurality of distance sensors are disposed on the work mounting member or the hand. Distances between each sensor and the work or distances between each sensor and the work mounting member are measured. A robot controller maintains an attitude of the robot so that the distances detected by the distance sensors are uniform and, at the same time, allows the work to approach the work mounting member so that a plurality of holes of the work are engaged with a plurality of respective protrusions of the work mounting member.

Abstract: A robot laser processing system (10) comprises at least one robot controller (14) for controlling at least one robot, a host controller (12) connected to the robot controller through a first network (11) for overall control of the robot controller, and a plurality of laser oscillators (16-1 to 16-n) selectively connectable to the processing nozzle (35) mounted on each robot and connected to the robot controller through a second network (18-1 to 18-n). An instruction from the host controller is transmitted to the robot controller through the first network, so that the robot controller determines the laser oscillator to be controlled and directly controls the particular laser oscillator through the second network. As a result, a processing command can be issued directly to the laser oscillator from the robot controller without intervention by the host controller.

Abstract: An arc welding apparatus includes a single-electrode type welding torch, a single wire feeder supplied with a plurality of welding wires and having a plurality of wire driving means for driving the plurality of welding wires, and a welding controller for controlling operations of the welding torch and the wire feeder. The welding controller selectively operates any one of the plurality of wire driving means to feed only a single welding wire to the welding torch and performs the arc welding. An arc welding robot system includes the arc welding apparatus, a robot mechanical part for holding the welding torch of the arc welding apparatus, and a robot controller for controlling operation of the robot mechanical part.

Abstract: A semiconductor-laser-pumped solid-state laser apparatus (11) which operates laser oscillation by exciting a solid-state laser medium (1) using a semiconductor laser (2) is described. The semiconductor-laser-pumped solid-state laser apparatus (11) has driving current switching means for switching, in accordance with an external control signal, a driving current between a state in which the driving current not less than an emission threshold value of the semiconductor laser is supplied to the semiconductor laser, and a state in which the driving current smaller than the emission threshold value of the semiconductor laser is supplied to the semiconductor laser. An external control apparatus sends an external control signal to a semiconductor-laser-pumped solid-state laser apparatus even if the laser radiation of the solid-state laser is stopped. Therefore, the electric power consumption of a laser machining system can be reduced and the lifetime of the semiconductor laser can be prolonged.

Abstract: A display member, particularly a plasma display member, can be produced by applying a past which includes a urethane compound and inorganic fine particles onto a substrate and then firing the paste. The display member has a post-firing pattern without any defect.

Abstract: A discharge lamp starter includes a discharge lamp that is lit at a luminance corresponding to power supplied, and a discharge lamp start control unit. The discharge lamp start control unit, receiving a signal indicating an on state only from a first switch, causes the discharge lamp to perform daytime running light by supplying first power to the discharge lamp to start lighting, followed by supplying second power smaller than the first power to the discharge lamp to maintain lighting. Receiving a signal indicating an on state only from a second switch, the discharge lamp start control unit causes the discharge lamp to perform nighttime running light by supplying third power greater than the first power to the discharge lamp to start lighting, followed by supplying fourth power smaller than the third power and greater than the second power to the discharge lamp to maintain lighting.

Abstract: From the robot controller, a laser irradiation start command is issued to the laser oscillator, together with a laser power command condition before arc generation. The laser power command before arc generation is used to suppress an amount of heat input, and is selected from among the first to the third laser power commands according to conditions of the material and thickness of base metal and the like. An arc welding start command is issued to the arc welding power source, together with welding voltage and wire feeding speed commands. Before the arc welding command is issued and the wire comes into contact with the base metal, the voltage becomes no-load voltage. Also, the slow wire feeding speed is instructed before the arc is generated. When the wire comes into contact with the base metal and the arc is generated, it is detected and the laser power command condition is changed to a condition for processing.

Abstract: An optical functional sheet characterized in that, at least within the sheet, a light diffusing phase and a transparent phase each extend along a direction perpendicular to the surface of the sheet and are alternately arranged along the sheet surface direction. The optical functional sheet has a smooth surface that can be surface-treated or laminated with another functional sheet and is provided with a light collecting effect due to the internal arrangements thereof that is capable of collecting both light diverging transversely and light diverging longitudinally using a single sheet. Thus, the sheet can be useful for applications such as the backlight for liquid crystal displays.

Abstract: An optical functional sheet characterized in that, at least within the sheet, a light diffusing phase and a transparent phase each extend along a direction perpendicular to the surface of the sheet and are alternately arranged along the sheet surface direction. The optical functional sheet has a smooth surface that can be surface-treated or laminated with another functional sheet and is provided with a light collecting effect due to the internal arrangements thereof that is capable of collecting both light diverging transversely and light diverging longitudinally using a single sheet. Thus, the sheet can be useful for applications such as the backlight for liquid crystal displays.

Abstract: A laser oscillator capable of executing a high-speed feedback control by reducing the control load of a main processor in the feedback control of the laser output. The laser is excited by an excitation source activated by one or more power supplies. The laser radiation is detected by a power sensor or a photodiode. A detected signal is A/D converted and fed to a sub processor or a high-speed DSP. The sub processor compares the current laser output value to a desired control value and calculates a deviation value in a predetermined period. The sub processor outputs a feedback signal to each of the power supplies according to a command from the main processor. Each power supply adjusts the supplied current to control the laser output. The main processor monitors conditions of the power supplies and controls a coolant circulation device. A factor regarding a load on a sequential control process, which may delay the feedback control, is eliminated and an analog circuit is unnecessary.

Abstract: A light diffusing film including a film including crystalline polymer compound C laminated to at least one face of an internal light-diffusing film including an islands-in-a-sea structure including a sea component of thermoplastic resin A and an islands component of thermoplastic resin B, wherein thermoplastic resins A and B have different refractive indexes.

Abstract: A display member, particularly a plasma display member, can be produced by a process comprising applying a paste which comprises a urethane compound and inorganic fine particles onto a substrate and then firing the paste. The display member has a post-firing pattern without any defect.

Abstract: A work mounting device in which an operation for teaching a robot to mount a work on a work mounting member is automated. The work is gripped by a hand placed on an arm tip portion of the robot and the operation for mounting the work on the work mounting member is taught. A plurality of distance sensors are disposed on the work mounting member or the hand. Distances between each sensor and the work or distances between each sensor and the work mounting member are measured. A robot controller maintains an attitude of the robot so that the distances detected by the distance sensors are uniform and, at the same time, allows the work to approach the work mounting member so that a plurality of holes of the work are engaged with a plurality of respective protrusions of the work mounting member.

Abstract: A discharge lamp starter includes a discharge lamp that is lit at a luminance corresponding to power supplied, and a discharge lamp start control unit. The discharge lamp start control unit, receiving a signal indicating an on state only from a first switch, causes the discharge lamp to perform daytime running light by supplying first power to the discharge lamp to start lighting, followed by supplying second power smaller than the first power to the discharge lamp to maintain lighting. Receiving a signal indicating an on state only from a second switch, the discharge lamp start control unit causes the discharge lamp to perform nighttime running light by supplying third power greater than the first power to the discharge lamp to start lighting, followed by supplying fourth power smaller than the third power and greater than the second power to the discharge lamp to maintain lighting.

Abstract: An optical functional sheet characterized in that, at least within the sheet, a light diffusing phase and a transparent phase each extend along a direction perpendicular to the surface of the sheet and are alternately arranged along the sheet surface direction. The optical functional sheet has a smooth surface that can be surface-treated or laminated with another functional sheet and is provided with a light collecting effect due to the internal arrangements thereof that is capable of collecting both light diverging transversely and light diverging longitudinally using a single sheet. Thus, the sheet can be useful for applications such as the backlight for liquid crystal displays.

Abstract: A light diffusing film is provided which, while the surface is smooth, is outstanding in its light transmittance, light diffusion, mechanical strength and productivity, and there is also provided a method for the production of this film.

Abstract: A robot controller for use in a robot control system with a plurality of robots connected one another through a communication path. When a cause for stopping occurs in one or more robots, other robots are also stopped in the same type of stopping procedure. A priority of execution on a plurality of stop procedure types is determined. When a cause for stopping occurs in one or more robots in the robots connected through the communication line or in the robots in synchronously cooperative operation, all of the robots connected through the communication line or the robots in synchronously cooperative operation are stopped in the same type of stopping procedure. If different causes for stopping occur in the robots, a stopping procedure type having higher priority in the stopping procedures determined in accordance with the different causes of stopping is adopted to stop all of the robots in the same type of stopping procedure.

Abstract: A robot controller having a function of monitoring abnormality of a robot operation to prevent an accident by stopping supply of energy or operational substance to an operational tool when the operational tool is abnormally stopped. Motion command pulses for a robot motion are obtained by computing operations when a motion statement of the operation program is read out and stored in a shared memory. Motors for driving respective robot axes are driven based on the motion command pulses. When an I/O output command is issued on a signal line to actuate an arc welder, the operation control software demands to set a predetermined waiting time period to a timer. The managing software demands to start a countdown of the timer and informs the operation control software of an elapse of the set waiting time period.

Abstract: A welding voltage value Vf and a welding current value IF are respectively monitored by a detector during execution of arc welding in accordance with a robot operation program, indexes are calculated which show how far the monitored values Vf and If are deviated from a command welding voltage value Vc and a command welding current value Ic specified in the operation program, and it is decided that there is a possibility of occurrence of a defective weld in arc welding under execution, when the calculated index exceeds a preset threshold value. Then, the data for arc-welding execution conditions and execution results are cumulatively stored in a defective weld history data area provided in a memory in accordance with the line number and the statement of the line in the operation program for each line constituting the program, and the cumulatively-stored data is displayed on a screen.