Abstract: An autoleveling device comprises a pair of left and right headlamps in which optical axes L are tilted in a vertical direction with respect to a body by driving operations of respective motors 10 (10L, 10R), single control means 16 for controlling the driving operations of the left and right motors 10 at the same time, a vehicle speed sensor 12, a height sensor 14 and a storage section 20 for storing pitch angle data detected by the height sensor 14, the control means 16 controlling the respective motors 10 such that the respective optical axes L have a predetermined inclination with respect to a road based on the pitch angle data thus detected, wherein the motors are driven only if a difference between the detected pitch angle and the pitch angle used for the last driving control of the motor is equal to or more than a predetermined reference value which is more than a pitch angle equivalent to a hysteresis width of each of the left and right motor driving circuits (|&thgr;2−&thgr;1|>&

Abstract: A device for aligning an optical axis of a light source according to the change of attitude of a vehicle is described. The device is of simple construction and is positionally accurate. In an embodiment, a controller 18 performs an alignment operation according to an output signal from a vehicle height sensor 10 and an alignment command signal (PWM signal). The PWM signal has a pulse duration that has been modulated according to this operation, and the result is input to a D/A converter 20. A transistor Q of a D/A converter 20 responds to the PWM signal and performs a switching operation, and a signal accompanying this switching operation is smoothed by a charge and discharge circuit comprising resistance R1 and R2, and a condenser C. The smoothed signal is output from both ends of the condenser C to an actuator 14, and a motor 26 is driven to rotate according to the deviation between the output of a potentiometer 24 and the voltages at both ends of the condenser C.

Abstract: A head lamp auto-leveling system can be used inexpensively and for a long term by reducing the frequency in the drive of actuators, and which does not arouse an unpleasant feeling in the driver. An implementation of the auto-leveling system includes head lamps whose optical axis L is tilted vertically with respect to a vehicle body by a drive of an actuator 10, a control portion 16 for controlling the drive of actuators 10, a speed sensor 12, a height sensor 14, and a memory portion 20 for storing pitch angle data detected by the height sensor 14. The control portion 16 controls the actuators 10 based on the detected pitch angle data such that optical axes L are brought into a predetermined tilted state with respect to a road surface. The control portion 16 also decides a stable vehicle posture to control (level) the drive of the actuators 10 during both stop and running states if the difference between a plurality of moving average pitch angle data (e.g.

Abstract: A vehicle headlamp leveling device for automatically tilting the headlamps of a vehicle is provided. The light axes of the headlamps based on pitch angles of the vehicle are tilted to level the headlamps relative to a road surface.

Abstract: An automatic leveling system has a headlamps optical axes L adapted to tilt vertically relative to a body of a vehicle by driving actuators 10, a control part 16 for controlling the driving of the actuators 10, a vehicle speed sensor 12, a vehicle height sensor 14 and a storage part 20 for storing pitch angle data detected by the vehicle height sensor 14. The control part 16 controls the actuators 10 based on a detected pitch angle such that the optical axes L of the headlamps are inclined to a predetermined angle relative to the road surface.

Abstract: A discussion roused at an electronic conference in a distributed environment is monitored, and if a predetermined index relating to the amount of a discussion exceeds a prescribed value, the holding of a face-to-face conference is automatically determined. Then, facilities and transportation needed to hold the face-to-face conference are automatically reserved and notified to participants.

Abstract: An automatic headlamp leveling device is provided to reduce headlamp leveling from occurring during inappropriate times.

Abstract: An automatic automobile headlamp leveling device is provided for a headlamp which is driven by an actuator so that a light axis of the headlamp can be tilted up or down relative to a vehicle body. A vehicle speed detection sensor is provided for detecting the vehicle speed, a pitch angle detection sensor is provided for detecting a pitch angle of the vehicle, a storage section is provided for storing a plurality of pitch angle data of the vehicle detected by the pitch angle detection sensor, and a control section is provided for controlling the driving of the actuators. The control section controls the driving of the actuators based on the pitch angle data so that the light axes of the headlamps always stay in a certain tilted state relative to the surface of a road.

Abstract: An automatic leveling apparatus includes a headlamp whose light axis is pivoted in a vertical direction relative to a vehicle body by an actuator 10; a control unit 16 for controlling the operation of the actuator 10; vehicle velocity detection device 12 for detection of the speed of the vehicle; and pitch angle detection device 14 for detecting a pitch angle of the vehicle. When the pitch angle detection device 14 detects a pitch angle &thgr;2 while the vehicle is in a stable traveling state, the control unit 16 controls the operation of the actuator 10 in consideration of the pitch angle &thgr;2. Consequently, the actuator is prevented from being controlled on the basis of a pitch angle obtained when the vehicle stops facing downhill or in an unnatural position such as in which the wheels on one side of the vehicle are on the curb.

Abstract: An automatic leveling apparatus includes a headlamp whose light axis is pivoted in a vertical direction relative to a vehicle body by an actuator 10; a control unit 16 for controlling the operation of the actuator 10; vehicle speed detection device 12 for detection of the speed of the vehicle; and pitch angle detection device 14 for detecting a pitch angle of the vehicle. When the pitch angle detection device 14 detects a pitch angle &thgr;2 while the vehicle is in a stable traveling state, the control unit 16 controls the operation of the actuator 10 in consideration of the pitch angle &thgr;2. Consequently, the actuator is prevented from being controlled on the basis of a pitch angle obtained when the vehicle stops facing downhill or in an unnatural position such as in which the wheels on one side of the vehicle are on the curb.

Abstract: In an anode-side assembling process, a first end of a glass tube is fused to a rearward end of an electrode bar secured to an anode-side lead to produce a primary sealed product. In a cathode-side assembling process, a ring-shaped cathode is secured by caulking to a forward end portion of an electrode bar secured to a forward end of a cathode-side lead to produce a cathode member. In an assembling process, a second end of the glass tube of the primary sealed product is fused to a rearward end of the electrode bar secured to the cathode-side lead of the cathode member to produce a xenon discharge tube. A trigger electrode, which is composed of a transparent conductive film, is formed on a surface of the glass tube so that the light-transmissive sealed tube-coating ratio specified by the transparent conductive film is within a range of 5 to 30%.

Abstract: An automatic leveling device for automotive vehicle headlamps is described. The device automatically stops driving an actuator if the actuator is determined to be failing, while the other normally operating actuator is used to perform a leveling of the optical axis of the headlamp as close to a proper leveling as possible. In an implementation, a pair of left and right headlamps 1L, 1R have optical axes L that are tilted individually by driving left and right actuators 10L, 10R, respectively. A single control unit 16 simultaneously controls the driving of the left and right actuators 10L, 10R. A vehicle speed detection means 12, a pitch angle detection means 14, and failure detection means 20L, 20R are included.

Abstract: An automatic leveling system has a headlamps optical axes L adapted to tilt vertically relative to a body of a vehicle by driving actuators 10, a control part 16 for controlling the driving of the actuators 10, a vehicle speed sensor 12, a vehicle height sensor 14 and a storage part 20 for storing pitch angle data detected by the vehicle height sensor 14. The control part 16 controls the actuators 10 based on a detected pitch angle such that the optical axes L of the headlamps are inclined to a predetermined angle relative to the road surface.

Abstract: An autoleveling device comprises a pair of left and right headlamps in which optical axes L are tilted in a vertical direction with respect to a body by driving operations of respective motors 10 (10L, 10R), single control means 16 for controlling the driving operations of the left and right motors 10 at the same time, a vehicle speed sensor 12, a height sensor 14 and a storage section 20 for storing pitch angle data detected by the height sensor 14, the control means 16 controlling the respective motors 10 such that the respective optical axes L have a predetermined inclination with respect to a road based on the pitch angle data thus detected, wherein the motors are driven only if a difference between the detected pitch angle and the pitch angle used for the last driving control of the motor is equal to or more than a predetermined reference value which is more than a pitch angle equivalent to a hysteresis width of each of the left and right motor driving circuits (|&thgr;2−&thgr;1|>&

Abstract: In an anode-side assembling process, a first end of a glass tube is fused to a rearward end of an electrode bar secured to an anode-side lead to produce a primary sealed product. In a cathode-side assembling process, a ring-shaped cathode is secured by caulking to a forward end portion of an electrode bar secured to a forward end of a cathode-side lead to produce a cathode member. In an assembling process, a second end of the glass tube of the primary sealed product is fused to a rearward end of the electrode bar secured to the cathode-side lead of the cathode member to produce a xenon discharge tube. A trigger electrode, which is composed of a transparent conductive film, is formed on a surface of the glass tube so that the light-transmissive sealed tube-coating ratio specified by the transparent conductive film is within a range of 5 to 30%.

Abstract: An automobile headlamp automatic leveling apparatus is provided. A headlamp whose light axis is tilted upward and downward in relation to a vehicle body by means of an actuator, a control unit for controlling the operation of the actuator, vehicle speed detection means for detection of the speed of the vehicle; and pitch angle detection means for detecting a pitch angle of the vehicle are included in the leveling apparatus. The control unit controls the operation of the actuator on the basis of a detected pitch angle such that the light axis of the headlamp maintains a constant, predetermined angle in relation to the road surface. While the vehicle is stationary, the control unit controls operation of the actuator at the time of illumination of the headlamp. Subsequently, while the vehicle remains stationary, the operation of the actuator is controlled at given time intervals which are counted by an interval timer.

Abstract: A coaxial connector is provided for a coaxial cable having an inner conductor, a dielectric member and an outer conductor which is made of a metal thin film. The coaxial connector comprises a connector pin electrically connected to the inner conductor, a cylindrical connector body formed with a through bore having part of said connector member and one end portion of the coaxial cable received therein, a cylindrical housing rotatably mounted around and in concentric and radially spaced relation with the cylindrical connector body so as to have the cylindrical connector body and the coaxial cable held at a standstill to each other, a tubular conductor having a cylindrical wall portion having a thickness larger than that of the outer conductor of the coaxial cable. The tubular conductor is interposed between the inner surface of the body and the outer surface of the coaxial cable in concentric and radially spaced relation therewith.

Abstract: A lighting circuit for a discharge lamp capable of improving the lighting performance of a discharge lamp with a simple circuit structure to thereby prevent a lighting failure at the end of the lifetime of the discharge lamp. The lighting circuit 1 comprises a DC power supply circuit 2, DC-AC conversion means 3 for converting a DC voltage output from the DC power supply circuit 2 to an AC voltage and supplying the AC voltage to the discharge lamp 5, a circuit element 6 (a switch element or a current limiting element) for blocking or limiting a current counter-flowing to the DC power supply circuit 2 from the DC-AC conversion means 3, and an inductive load 4 connected in series to the discharge lamp 5. A series circuit of a Zener diode 7 and a passive element 8 (a capacitor or a resistor) is provided in parallel to the circuit element 6, so that when the Zener diode 7 conducts, a rise in an auxiliary voltage for reignition is suppressed.

Abstract: A xenon electronic flash tube has a transparent glass tube body. Xe gas is enclosed in the tube body. An anode is projected inside the tube body. A cathode, inside the tube body, is projected toward the anode, and includes base metal material and a Cs compound having a characteristic of emitting electrons, such as Cs.sub.2 Ta.sub.2 O.sub.6.

Abstract: A method and apparatus for manufacturing a magnetic recording medium at high efficiency. A flexible web is passed around first and second cooling cans. The web is reversed between the two cans so that the same surface of the web is directed to the outside on both cans. A single evaporation source produces an evaporated stream of magnetic film forming material which impinges on the web as it passes around both cans, thereby to form two films of the evaporated magnetic material on the same surface of the web.