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1. 发明专利

JPH0621543A GAS LASER EQUIPMENT 失效
公开(公告)号：JPH0621543A
公开(公告)日：1994-01-28
申请号：JP17844992
申请日：1992-07-06
申请人： TOSHIBA CORP
发明人： NISHIO MITSUHIRO
IPC分类号： H01S3/038 , H01S3/097 , H01S3/139
摘要： PURPOSE:To obtain a gas laser equipment wherein material generated by a bearing, which retains a blower fan so as to be able to freely rotate, is prevented from mixing in gas laser medium which circulates in a gas laser vessel. CONSTITUTION:A laser vessel 1 enclosing gas laser medium, a blower fan 7 installed in the vessel so as to be able to freely rotate via a bearing 9, and a casing 21 covering the bearing non-airtightly are installed. Further a gas cleaning pipe 22 and a circulation pump 24 are installed. The one end of the pipe 22 links with the casing, and the other end links with the inside of the laser vessel. A trap 23 for eliminating material generated by the bearing 9 when it rotates is installed in the middle part of the pipe 22. The circulation pump 24 circulates a part of the gas laser medium from one end of the pipe 22 toward the other end.

2. 发明专利

JPH04321287A LASER OSCILLATION DEVICE 失效
公开(公告)号：JPH04321287A
公开(公告)日：1992-11-11
申请号：JP9017691
申请日：1991-04-22
申请人： TOSHIBA CORP
发明人： NISHIO MITSUHIRO
IPC分类号： H01S3/08
摘要： PURPOSE:To make a laser oscillation take place successively and stably in the state before reflecting mirrors are damaged by a method wherein in the case the reflective surfaces of the first and second reflecting mirrors are damaged, the damaged reflecting mirrors are moved by a prescribed distance and the damaged parts of the mirrors are put outside of the optical path of a laser beam. CONSTITUTION:A laser beam, which is generated at a discharge part 22 and travels in parallel from a first reflecting mirror 20 to a second reflecting mirror 21, reaches the mirror 21, is reflected and is again amplified at the part 22. The amplified laser beam is reflected by the mirror 20 and is further amplified at the part 22 to proceed to the side of the mirror 21. The laser beam, which is amplified in the repetition process of these reflections and is increased its output, gradually proceeds to the center of a laser oscillation device and is outputted from pass light 23 as a solid laser beam 25. Thereby, in the case the reflective surfaces of the mirrors 20 and 21 are damaged, the damaged reflecting mirrors are moved by a prescribed distance and a laser oscillation successively can take place stably in the state prior to the damage by putting the damaged parts of the mirrors outside of the optical path of the laser beam.

3. 发明专利

JPH03150882A GAS LASER DEVICE 失效
公开(公告)号：JPH03150882A
公开(公告)日：1991-06-27
申请号：JP28884289
申请日：1989-11-08
申请人： TOSHIBA CORP
发明人： NISHIO MITSUHIRO
IPC分类号： H01S3/03 , H01S3/034
摘要： PURPOSE:To remove a window member even if the interior of a pressure vessel is not opened with the atmosphere by maintaining the sealing state of the vessel by a gate when the member is removed. CONSTITUTION:A plurality of wall members 14 for absorbing an impact wave to be generated by a main discharge are provided at a predetermined interval along its axial direction on the inner periphery of a small-diameter part 3 of a pressure vessel 1, and a slide plate 16 for forming a gate is slidably adhered along the direction of the part 3 on one side surface of a wall member 14 disposed at the axially outermost side of the part 3. When the member 5 is removed from the part 3 for replacing or repairing, the plate 16 is slid downward by an operation rod 19, a vent hole 14a opened at the member 14 is blocked by the plate 16 to maintain the sealing state of the vessel 1. Thus, the member 5 can be replaced or repaired without communicating the interior of the vessel 1 with the atmosphere.

4. 发明专利

JPH01117383A METALLIC VAPOR LASER OSCILLATING DEVICE 失效
公开(公告)号：JPH01117383A
公开(公告)日：1989-05-10
申请号：JP27547487
申请日：1987-10-30
申请人： TOSHIBA CORP
发明人： NISHIO MITSUHIRO , KAKIZAKI KATSUYUKI
IPC分类号： H01S3/097 , H01S3/03 , H01S3/038 , H01S3/0971
摘要： PURPOSE:To obtain a pulse laser output high in a peak pulse with a required repetition frequency as an average output is made to keep constant by a method wherein a trigger pulse signal output which is applied onto a switching element is made to be intermittently locked (missing) at a required repetition frequency by a demand instruction of an optical plant. CONSTITUTION:When a demand instruction P from an optical plant is not given to a lock circuit 27-2, a metal vapor laser oscillating device is made to generate a pulse laser output F with a required peak value continuously. And, when the demand instruction P from the optical plant is given to the lock circuit 27-2, a trigger pulse signal Tr outputted from a pulse oscillator 27-1 is intermittently locked (missing) at a specified repetition frequency (a few Hz-hundreds Hz) through an output of the lock circuit 27-2, and the trigger pulse signal Tr is made to oscillate continuously for the grid electrode of a thyratron 22. By these processes, pulse laser output F containing pulses with a high peak value is made to oscillate at a specified repetition frequency from the metallic vapor laser oscillator.

5. 发明专利

JPS63239884A METAL VAPOR LASER 失效
公开(公告)号：JPS63239884A
公开(公告)日：1988-10-05
申请号：JP7161687
申请日：1987-03-27
申请人： TOSHIBA CORP
发明人： NISHIO MITSUHIRO
IPC分类号： H01S3/03
摘要： PURPOSE:To supply a metal vapor source without opening an interior with the atmosphere and to shorten a time required to reoscillate a metal vapor laser by forming a through hole at an angle crossing a discharge tube near a beam output port, and providing a flexible insertion rod telescopically rotatably with the hole and having a groovelike cutout at the end. CONSTITUTION:A through hole 21 is formed near the beam output port of a hermetically sealing vessel 1, two grooves 22, 22 are formed at the inner wall of the vessel 1 in the hole 21, a flexible insertion rod 24 having a stopper 25 and a cutout 26 at the end is provided telescopically and rotatably with the hole 21, and an O-ring 23 for sealing the rod 24 from the vessel 1 is provided. The rod 23 is rotated to dispose a recess 27 above, and a metal vapor source is filled in the recess 27. Then, the rod is inserted to a suitable position in the tube 2, the recess 27 is directed downward, and the metal vapor source is dropped in the tube. Thereafter, the cutout 26 is disposed downside, and the rod 24 is so returned as not to displace the vapor source from a predetermined position. This is repeated as required. Thus, the metal vapor source can be supplied without opening the interior of a laser body with the atmosphere.

6. 发明专利

JPS63212081A LASER BEAM MACHINING METHOD 失效
公开(公告)号：JPS63212081A
公开(公告)日：1988-09-05
申请号：JP24801987
申请日：1987-10-02
申请人： TOSHIBA CORP
发明人： NISHIO MITSUHIRO , NAKAMURA SUGURU
IPC分类号： B23K26/00 , B23K26/21
摘要： PURPOSE:To eliminate the residual stress and to prevent crystal grains from being coarsened by arranging plural infrared lamps to heat a machining part and putting out lights in order according to the starting order of the lighting after the machining is finished to heat-treat the machining part. CONSTITUTION:Many infrared lamps 7... are arranged at both sides with a nozzle 4 between as a heating system to heat a butt part 6 to heat toward the butt part 6 from both sides. In the case the nozzle 4 is scanned and a laser beam L is projected to weld the butt part 6, the infrared lamps 7... are lighted in order and the heat is applied to a formed weld zone 8 to control the cooling speed. After the welding is finished, the lights are put out in order according to the order of the starting of the lighting with the lapse of time to heat-treat the weld zone 8. By this method, the residual stress with respect to the machining part is eliminated and the crystal grains are prevented from being coarsened and the tact time is reduced.

7. 发明专利

JPS6342188A GAL-LASER OSCILLATOR 失效
公开(公告)号：JPS6342188A
公开(公告)日：1988-02-23
申请号：JP18520786
申请日：1986-08-08
申请人： TOSHIBA CORP
发明人： NISHIO MITSUHIRO
IPC分类号： H01S3/097 , H01S3/036
摘要： PURPOSE:To avoid interruption of machining and to improve efficiency, by providing gas-laser-medium storing parts, which change at least one of the pressure of a gas laser medium and the composition of gas in a gas-laser osciallting part, and switching the pressure and the composition of the gas laser medium in correspondence with the laser oscillating pattern. CONSTITUTION:A gas laser oscillating part 1 is provided. Gas-laser-medium storing parts 11 and 14 are connected to the gas laser oscillating part 1 and change at least one of the pressure of a gas laser medium and the composition of gas in the gas-laser oscillating part. Switching units 7, 8, 10, 13, 16 and 17 are provided at the connecting parts of the gas-laser-medium storing parts 11 and 14 and the gas laser oscillating part 1. The gas-laser-medium storing parts 11 and 14 are constituted by both or one of a high pressure tank 11, in which pressure is kept higher than the pressure of the gas laser medium in the gas laser oscillating part 1, and a lower pressure tank 14, in which pressure is kept low.

8. 发明专利

JPS62106681A GAS LASER OSCILLATOR 失效
公开(公告)号：JPS62106681A
公开(公告)日：1987-05-18
申请号：JP24641285
申请日：1985-11-05
申请人： TOSHIBA CORP
发明人： NISHIO MITSUHIRO
IPC分类号： H01S3/036 , H01S3/07
摘要： PURPOSE:To make a laser medium progress as a convolute flow and realize a stable and high-output discharge by a method wherein a supply tube is connected slantly to a discharge tube and the diameter of the supply tube is selected to be smaller than a half of the diameter of the discharge tube. CONSTITUTION:A tube wit a diameter smaller than a half of the diameter of a discharge tube 3 is sued as a supply tube 7 and both ends of the supply tube 7 ate connected to the discharge tube 3 in such a manner that the end of the supply tube 3 is inclined relative to the axis of the discharge tube 3 toward the side of a linking tube 8 and the axis of the tube 3 and the axis of the tube 7 do not coincide with each other. When a gas laser medium, circulated by a blower 9 flows into the tube 3 from the tube 7 while a laser oscillation is induced by a resonance between a total reflection mirror 1 and an output mirror 2, the gas laser medium spouted out from the two ends of the tube 7 hits the upper part of the inside wall of the tube 3 slantly and progresses toward the tube 8 as a convolute flow because the axis of the tube 3 and the axis of the tube are connected together in a twisted relation.

9. 发明专利

JPS6114093A Laser welding method 失效
标题翻译：激光焊接方法
公开(公告)号：JPS6114093A
公开(公告)日：1986-01-22
申请号：JP13208384
申请日：1984-06-28
申请人： Toshiba Corp
发明人： NISHIO MITSUHIRO
IPC分类号： B23K26/00 , B23K26/14 , B23K26/20
CPC分类号： B23K26/1462 , B23K26/24
摘要： PURPOSE:To execute stable laser welding and processing while assuring the formation of penetration beads and allowing the easy expansion of penetration by reflecting the laser light past the keyhole generated in a welding part in the stage of laser welding and heating adequately the rear of the weld zone. CONSTITUTION:The laser light past the keyhole generated in the welding part is reflected by a hollow curved surface 8 provided to the recess 7 of a backing strip and is irradiated on the rear surface in the weld zone of a welding member 3 in the stage of welding said member by the laser light emitted from a welding torch 1. The irradiated part is adequately heated, by which the formation of the penetration beads is assured and the penetration is easily expanded. The welding and processing are thus stabilized. An inert gas may be blown to the recess 7 to prevent the oxidation thereof and in some cases, the inert gas may be blown from the side face of the recess 7. The surface 8 may be made into an interchangeable type.
摘要翻译：目的：执行稳定的激光焊接和加工，同时确保穿透珠的形成，并允许通过在激光焊接阶段反射激光经过焊接部分产生的锁眼并充分加热焊接后部，从而容易地扩展穿透区。构成：穿过焊接部分产生的钥匙孔的激光被设置在背衬条的凹部7上的中空弯曲表面8反射，并且在焊接部件3的焊接区域的后表面上照射通过从焊炬1发射的激光焊接所述构件。照射部分被充分地加热，由此确保渗透珠的形成并且穿透容易扩大。因此焊接和加工是稳定的。可以向凹部7吹入惰性气体以防止其氧化，并且在一些情况下，惰性气体可以从凹部7的侧面吹出。表面8可以制成可互换的类型。

10. 发明专利

JP2006153643A Measuring instrument 审中-公开
标题翻译：测量仪器
公开(公告)号：JP2006153643A
公开(公告)日：2006-06-15
申请号：JP2004344316
申请日：2004-11-29
申请人： Toshiba Corp , 株式会社東芝
发明人： KITA TOMOHIRO , OOMIYA KAYOKO , UCHIYAMA KENICHI , NISHIO MITSUHIRO , NAKAYAMA MICHIO
IPC分类号： G01N21/27
摘要： PROBLEM TO BE SOLVED: To provide a measuring instrument having high measurement accuracy and low cost, capable of shortening an operation time. SOLUTION: Positioning operation and holding operation are performed by a simple constitution wherein a glass chip 800 is positioned on an optical block 500 by the first positioning part 420 and the second positioning part 440 provided on a device substrate 900 equipped with the optical block 500, and the upper surface of the glass chip 800 is pressed by a pressing part 460, and an operation part 600 is slid by the second positioning part 440 and the pressing part 460. COPYRIGHT: (C)2006,JPO&NCIPI

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