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91. 发明专利

JPH01156629A LASER ENERGY DETECTOR 失效
公开(公告)号：JPH01156629A
公开(公告)日：1989-06-20
申请号：JP31655587
申请日：1987-12-15
申请人： MITSUBISHI ELECTRIC CORP
发明人： KANEHARA YOSHIHIDE , OGAWA SHUJI , YASUI KIMIHARU , SASAKI NORIAKI
IPC分类号： G01J1/02 , G01J1/42 , H01S3/00
摘要： PURPOSE:To surely and easily detect the energy of a laser beam by using a laser beam scattering mirror as a bend mirror, condensing its scattered light by a lens and detecting the intensity of the scattered light. CONSTITUTION:A laser beam 1 outputted from a laser oscillator is reflected by a laser beam scattering mirror 2 being a bend mirror, and becomes a scattered light 4. The scattered light 4 is condensed by a lens 5 and its intensity is detected by a laser detector 3. In such a way, by such a simple constitution as only reflecting the laser beam 1 by the laser beam scattering mirror 2, the energy of the laser beam 1 can be detected easily and surely.

92. 发明专利

JPS642795A MONITORING DEVICE FOR CARBONIC ACID GAS LASER BEAM MACHINING 失效
公开(公告)号：JPS642795A
公开(公告)日：1989-01-06
申请号：JP15721087
申请日：1987-06-24
申请人： MITSUBISHI ELECTRIC CORP
发明人： KANEHARA YOSHIHIDE , OGAWA SHUJI
IPC分类号： B23K26/02 , B23K26/00 , B23K26/03
摘要： PURPOSE:To monitor a state during laser beam machining without giving an effect on a laser beam by utilizing a refractive index of a machining lens between the carbonic acid gas laser beam and the visible radiation being different from each other. CONSTITUTION:When a reflected light beam of an illuminator 14 or the light emission by the laser beam machining passes the machining lens 5 and a second lens 10 from the surface of a work 6, the visible radiation 13 is refracted large than the carbonic acid gas laser beam 2. On the other hand, since the beam diameter of the focusing position 12 of the carbonic acid gas laser beam 2 is small, a mirror 17 with a fine hole 6 is provided with a gradient and the laser beam 2 is passed through it, by which only the visible radiation 13 can be reflected. The radiation 13 is condensed by an image-formation lens 18 and an image of the focusing position 20 of the work 6 is formed at the image- formation position by a TV camera 19 or the eyes. Accordingly, the state during the laser beam machining can be monitored without giving the effect on the carbonic acid gas laser beam 2.

93. 发明专利

JPS6346995B2 失效
公开(公告)号：JPS6346995B2
公开(公告)日：1988-09-20
申请号：JP12819479
申请日：1979-10-04
申请人： MITSUBISHI ELECTRIC CORP
发明人： YAGI SHIGENORI , OGAWA SHUJI
IPC分类号： H01S3/097 , H01S3/038

94. 发明专利

JPS63106717A LASER BEAM TRANSMITTER 失效
公开(公告)号：JPS63106717A
公开(公告)日：1988-05-11
申请号：JP25293086
申请日：1986-10-24
申请人： MITSUBISHI ELECTRIC CORP
发明人： OGAWA SHUJI , FUKUSHIMA TSUKASA
IPC分类号： B23K26/064 , G02B7/00 , G02B26/10 , H01S3/101
摘要： PURPOSE:To prevent interception of a laser beam and extremely reduce energy loss by omitting an aperture which intercepts a part of the laser light and directly attaching a light detecting means to a reflecting mirror. CONSTITUTION:Output signals 7e of light detecting means 7d directly attached to reflecting mirrors 5 and 6 are operated by a CPU 8, and a motor 4a is driven through a motor driving signal 9a from a driving circuit 9 based on the signal from the CPU 8 to change the angle of a first reflecting mirror 4 so that a laser light 2b is projected to the center of a second reflecting mirror 5. Reflecting mirrors 5 and 6 are controlled as the first and second reflecting mirrors, and the positional deviation of the optical axis of the laser light is detected by the light detecting means of the reflecting mirrors at the down stream side to successively adjust the angles of reflecting mirrors at the upstream side, and thereby, the laser light 2 is transmitted to pass centers of all reflecting mirrors. Thus, the energy loss is reduced and the laser light is always transmitted with the beam position fixed.

95. 发明专利

JPS6314512B2 失效
公开(公告)号：JPS6314512B2
公开(公告)日：1988-03-31
申请号：JP7055681
申请日：1981-05-11
申请人： MITSUBISHI ELECTRIC CORP
发明人： YAGI SHIGENORI , OGAWA SHUJI , KUZUMOTO MASAKI
IPC分类号： H01S3/097 , H01S3/134

96. 发明专利

JPS6366982A UNSTABLE TYPE LASER OSCILLATOR 失效
公开(公告)号：JPS6366982A
公开(公告)日：1988-03-25
申请号：JP21101986
申请日：1986-09-08
申请人： MITSUBISHI ELECTRIC CORP
发明人： OGAWA SHUJI , MOROHASHI NOBUTAKA
IPC分类号： H01S3/08 , H01S3/086
摘要： PURPOSE:To improve the positioning accuracy of a mirror holder with a hole to stabilize its performance and to obtain an oscillator which is easily maintained by providing a positioning mechanism for positioning the mirror holder with a hole by engaging a projection with a recess between the holder and an optical base. CONSTITUTION:A convex mirror and a concave mirror opposed to one another, a mirror 3 with a hole attached obliquely to an optical axis for connecting both the mirrors for externally outputting a laser light amplified between both the mirrors, and a mirror holder 9 with a hole for holding the mirror 3 and detachably mounting on an optical base 8 are provided. A positioning mechanism for positioning the mirror holder 9 by engaging a recess with a projection is provided between the mirror holder 9 and the base 8 in such an unstable type laser oscillator. The mechanism is composed, for example, of at least one positioning pin 13 provided at either the mirror holder 9 or the base 8, and a positioning pin inserting hole 14 formed at the other.

97. 发明专利

JPS6363593A LASER BEAM CONTROL DEVICE 失效
公开(公告)号：JPS6363593A
公开(公告)日：1988-03-19
申请号：JP20615786
申请日：1986-09-02
申请人： MITSUBISHI ELECTRIC CORP
发明人： SUGAWARA MASAYUKI , OGAWA SHUJI
IPC分类号： B23K26/08 , B23K26/00 , G05B19/416
摘要： PURPOSE:To prevent the overheat of a corner part and to improve the working accuracy by automatically changing over the working conditions within the prescribed range of the corner in a working shape in the case of working a work with its automatic induction in an XY direction by a NC device for the laser light. CONSTITUTION:A work 7 is subjected to a laser beam machining in the prescribed shape with the automatic induction of a work table 6 in an XY direction by a numerical control device (NC) 10 for the laser light 2 condensing by a work head 4 the laser light 2 emitted from a laser oscillator 1. In case of the laser light 2 reaching a fixed distance Cin for the corner part whose working shape is less than a fixed angle theta, the corner part is passed by reducing the working conditions and at the time when separating from a fixed distance Cout the working is continued by returning to the original working conditions again. The overheat of the corner part is thus prevented automatically and the working accuracy of the work 7 can be increased.

98. 发明专利

JPS6356388A LASER BEAM PROCESSING DEVICE 失效
公开(公告)号：JPS6356388A
公开(公告)日：1988-03-10
申请号：JP19848186
申请日：1986-08-25
申请人： MITSUBISHI ELECTRIC CORP
发明人： OGAWA SHUJI , MOROHASHI NOBUTAKA
IPC分类号： B23K26/12
摘要： PURPOSE:To stabilize laser beam processing and to reduce initial cost by providing air stirring means such as blowers to a transmission duct for laser beam. CONSTITUTION:The plural blowers 8 are disposed at arbitrary intervals in the transmission duct 2 for laser beam. The laser beam 7 outputted from a laser beam oscillator 1 advances rectlinearily in the duct 2, is changed in direction by a reflecting mirror 3 and is projected via a processing lens 4 to a work 5 by which the laser beam processing is executed. The air in the duct 2 is stirred upon starting of the respective blowers 8 so that the refractive indices of the air in the duct 2 are distributed uniformly without dispersion. The disturbance of the optical axis of the laser beam 7 is, therefore, obviated and the laser beam 7 is stably introduced into the lens 4. The laser beam processing is thus stabilized and since the installation of the blowers 8 is merely necessitated, the initial cost is reduced.

99. 发明专利

JPS6310916B2 失效
公开(公告)号：JPS6310916B2
公开(公告)日：1988-03-10
申请号：JP3537380
申请日：1980-03-19
申请人： MITSUBISHI ELECTRIC CORP
发明人： OGAWA SHUJI , YAGI SHIGENORI , TABATA NORIKAZU
IPC分类号： H01S3/038 , H01S3/03 , H01S3/036 , H01S3/041 , H01S3/081 , H01S3/0975

100. 发明专利

JPS6354787A LASER POWER MONITOR 失效
公开(公告)号：JPS6354787A
公开(公告)日：1988-03-09
申请号：JP19848286
申请日：1986-08-25
申请人： MITSUBISHI ELECTRIC CORP
发明人： OGAWA SHUJI , MOROHASHI NOBUTAKA
IPC分类号： H01S3/00
摘要： PURPOSE:To measure a laser energy during laser-working by providing a through hole in a laser light reflecting region of a reflecting mirror for reflecting a laser light and inserting a sensor for measuring the power of the laser light into the through hole. CONSTITUTION:At least one through hole 6 is formed in a laser light reflecting region of a reflecting mirror 5 for reflecting a laser light 1, and a sensor 7 for measuring the power of the light 1 is inserted into the hole 6. For example, a plurality of through holes 6 are so opened that the optical axis of the light 1 is coincident with the axial line in the laser light reflecting region of the mirror 5 for reflecting to alter the direction of the light 1, and the optical sensors 7 are inserted from the rear surface of the mirror 5 into the holes 6. Coolant 4 is fed to the holder 8 for holding the end of the mirror 5 to cool the mirror 5. The light 1 incident to the mirror 5 is photodetected by the sensors 7 to measure the laser energy, and the light 1 reflected on the mirror except the holes 6 performs laser-works.

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