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1. 发明专利

JPH03240284A RING TYPE LASER DEVICE 失效
公开(公告)号：JPH03240284A
公开(公告)日：1991-10-25
申请号：JP3632590
申请日：1990-02-19
申请人： TOSHIBA CORP
发明人： FUJITA HIDEO
IPC分类号： H01S3/036 , H01S3/083
摘要： PURPOSE:To avoid a decrease in the property of a reflecting mirror by providing a controller for preventing adherence of getter medium evaporated and scattered from a getter to the mirror in the bottom of a containing recess for holding the getter. CONSTITUTION:In a ring type laser device, a conical protrusion 21 as a control ler is provided in the bottom 3a of a containing recess 3 for holding a getter 9. In this case, when the vertex angle of the protrusion 21 is A, the maximum diameter is C, the outer diameter of the getter 9 is D and the inner diameter is d, the diameter C is so set as to satisfy the relation of D>C>d. When it is so extended that an angle X from the top of the protrusion 21 to the exten sion line (l) of an imaginary line directed to the lower center becomes an angle equal to the angle A, a position where the interval of the line (l) becomes equal to the diameter D is B, and the getter 9 is disposed at the position B or a position between the position B and the bottom 3a of the recess 3. Thus, when the getter 9 is heated, the evaporated and scattered medium is not reflected in a direction for passing the inner part of the getter 9.

2. 发明专利

JPH02195630A COLD CATHODE DISCHARGE TUBE 失效
公开(公告)号：JPH02195630A
公开(公告)日：1990-08-02
申请号：JP1444589
申请日：1989-01-24
申请人： TOSHIBA CORP
发明人： FUJITA HIDEO , TERA KAZUMI , NISHIO MITSUHIRO
IPC分类号： H01J17/06 , H01J17/38
摘要： PURPOSE:To prolong the operational lifetime of a cold cathode discharge tube by forming a cathode of pure aluminum having a purity of 99.8% or more, and finishing an electron emitting surface in a face roughness of 0.2mum or less at the highest. CONSTITUTION:A raw material made of pure aluminum having a purity of 99.8% or more is roughly cut into a specific cathode shape. The roughly-cut cathode is finely cut in a face roughness of 0.2mum or less at the highest by a diamond tool, followed by washing, and then, a thin film made of aluminum oxide is formed on the surface by natural oxidation without applying any special heat treatment. As to the cathode made of pure aluminum, a current bias is decreased and the face roughness required to obtain a long operational lifetime is 0.2mum or less at the highest. The above face roughness can be obtained only by the fine cutting by means of the diamond tool, thereby obviating the necessity for the other finishing machining. Therefore, a cold cathode gas discharge tube having a long operational lifetime can be easily manufacture without such drawbacks as a control of impurity content, management of a heat treatment and the like.

3. 发明专利

JPS5958885A Beam output monitor device 失效
标题翻译：光束输出监视器
公开(公告)号：JPS5958885A
公开(公告)日：1984-04-04
申请号：JP16855782
申请日：1982-09-29
申请人： Toshiba Corp
发明人： FUJITA HIDEO
IPC分类号： H01S3/00
CPC分类号： H01S3/0014
摘要： PURPOSE:To make the signals proportional to the output by a method wherein, when a part of output beam is picked up by the first beam splitter and the first reflecting beam is changed into the second reflecting beam to be made to enter into a photoelectric converter as monitor signal, the incident angles of the splitter are equalized to make the incident surfaces perpendicular to each other. CONSTITUTION:The output beam 12 as random polarization from a laser oscillator 11 permeates through the first beam splitter 13 slanting upon an optical axis 12a by 45 degrees whereon a laser output compensating plate 23 compensating the strength fluctuation per polarizing direction is provided. Besides, the second beam splitter 15 slanting upon the first reflecting beam 14 from the splitter 13 by 45 degrees is provided above the splitter 13 and the second reflecting beam 16 from the second beam splitter 15 is made to enter into a photoreceptor 20 with photoelectric conversion element to constitute a photoelectric converter 22 together with a beam detecting circuit 21 monitoring the entered output. In such a constitution, the output may be made proportional to the output regardless of P of S polarization beams enabling the output to be monitored.
摘要翻译：目的：通过一种方法使信号与输出成比例，其中当输出光束的一部分由第一分束器拾取并且第一反射光束被改变为要进入光电转换器的第二反射光束时作为监视信号，分离器的入射角度相等，以使入射表面彼此垂直。构成：作为来自激光振荡器11的随机极化的输出光束12透过在光轴12a上倾斜45度的第一分束器13，其中提供补偿每个偏振方向的强度波动的激光输出补偿板23。此外，分离器13上方设有从分离器13向第一反射光束14倾斜45度的第二分束器15，并且使来自第二分束器15的第二反射光束16进入具有光电转换的感光体20 元件，与检测输入的输出的光束检测电路21一起构成光电转换器22。在这种结构中，可以使输出与输出成比例，而不考虑能够监视输出的S偏振光束的P。

4. 发明专利

JPS63142691A ION LASER TUBE 失效
公开(公告)号：JPS63142691A
公开(公告)日：1988-06-15
申请号：JP29004386
申请日：1986-12-05
申请人： TOSHIBA CORP
发明人： FUJITA HIDEO , MATSUDA MASAYASU
IPC分类号： H01S3/032 , H01S3/03
摘要： PURPOSE:To maintain a mutual junction state of ceramic materials satisfactorily for a long time by a method wherein a protruding part is formed in the central part of one edge to be joined and a recessed part is formed at the other edge in such a way that the protruding part is projected into the recessed part by keeping a slight gap. CONSTITUTION:A protruding part 17 is formed over the whole circumferenec at the edge of ceramic material 2 to be joined; a groove 18 is made over the whole circumference in the direction of the diameter of the material. A protruding part 19 whose cross section is circular is formed at the inner part in the direction of the diameter from the groove 18 at one edge of the ceramic material 2, i.e. in the center part; a recessed part 21 which is a little bigger than the protruding part 19 is formed in the central part of the other edge of the ceramic material 2. At the edges, of the ceramic material 2, which are joined to each other, these protruding parts 17 are glued by a glass material 22 while the protruding part 19 at one edge is inserted into the recessed part 21 at the other edge. By this method, it is possible to absorb the thermally expanded part in the central part in the direction of the diameter at the ceramic material; a stress due to the thermal expansion is hardly generated; as a result, it is possible to maintain a good junction state.

5. 发明专利

JPS6182490A External reflecting mirror laser device 失效
标题翻译：外部反射镜激光器件
公开(公告)号：JPS6182490A
公开(公告)日：1986-04-26
申请号：JP20490184
申请日：1984-09-29
申请人： Toshiba Corp
发明人： FUJITA HIDEO
IPC分类号： H01S3/105 , H01S3/034
CPC分类号： H01S3/0346
摘要： PURPOSE:To stably operate for a long time by disposing a slender shielding cylinder around an optical axis, suppressing a phenomenon of gathering dusts, thereby reducing the decrease in the laser output even when a dust cover is opened in not clean atmosphere. CONSTITUTION:An optical window 2 and a reflecting mirror 3 provided at both ends of a laser tube 1 are coupled by 1a dust cover 4, sealed by O-rings 5, a shielding cylinder 6 is disposed coaxially in the cover 4, and secured by fittings 7. One end of the cylinder 6 opposed to the window 2 is obliquely cut at the port 6a to be directed upward. The flow of dusts produced by convection does not cross the cylinder 6 due to the presence of the cylinder 6, the dusts are not trapped by a strong internal laser light to getter at the optical path. The window 2 is, once heated, not adhered with dusts, but the dusts pass therearound.
摘要翻译：目的：为了通过在光轴周围设置细长的屏蔽筒来长期稳定地操作，抑制灰尘聚集的现象，从而即使在不干净的气氛中打开防尘罩，也可以减少激光输出的减少。构成：设置在激光管1的两端的光学窗口2和反射镜3由1a防尘罩4联接，由O形环5密封，屏蔽筒6同轴地设置在盖4中，并由与窗口2相对的圆筒6的一端在端口6a处被倾斜切割以向上指向。由于气缸6的存在，由对流产生的灰尘的流动不会穿过气缸6，所以灰尘不被强烈的内部激光束捕获，从而在光路处吸气。窗户2一旦被加热，就不会附着在灰尘中，而是灰尘通过。

6. 发明专利

JPH0383383A GAS LASER DEVICE 失效
公开(公告)号：JPH0383383A
公开(公告)日：1991-04-09
申请号：JP22067189
申请日：1989-08-28
申请人： TOSHIBA CORP
发明人： FUJITA HIDEO
IPC分类号： H01S3/03 , H01S3/038
摘要： PURPOSE:To prevent concentration of a discharge at a cold cathode, to reduce cleanup of gas laser medium and to increase its lifetime by enlarging the inner diameter of a through path for connecting a fine conduit formed in a body to the cathode to a size near the inner diameter of the cylinder of the cathode, and forming the length of the path in size of the radius or more of the cathode. CONSTITUTION:A body 14 of a gas laser device is a rectangular parallelepiped block made of a material having a low thermal expansion coefficient such as quartz glass, etc., and a fine conduit 2 is opened in a passing state along the longitudinal direction at the center of the body 14. A first through path 15 is opened on the way of the conduit 2 in a state substantially perpendicular to the radial direction. A cold cathode 6 is concentrically adhered to the opening end 15a of the path 15. The inner diameter of the path 15 is enlarged to a size near the inner diameter of the cylinder 6a of the cathode 6, and the length size B of the path 15 is formed in size of the radius or more of the cylinder 16a of the cathode 6. With this construction, concentration of a discharge can be suppressed to a minimum limit.

7. 发明专利

JPH01202637A LIGHT INTENSITY MEASURING APPARATUS 失效
公开(公告)号：JPH01202637A
公开(公告)日：1989-08-15
申请号：JP2647888
申请日：1988-02-09
申请人： TOSHIBA CORP
发明人： TERA KAZUMI , FUJITA HIDEO
IPC分类号： G01M11/00 , G01N21/55
摘要： PURPOSE:To enable measurement of intensity of light in terms of reflection factor and transmissivity at a high accuracy without increase in the number of parts, by arranging a reflecting mirror, first and second photo detectors and the like. CONSTITUTION:Optical path of a laser light 2 released from a laser oscillator 1 is provided with a reflecting mirror 10 and a high reflecting surface 11 is formed on the back of the reflecting mirror 10. The laser light 2 is divided into two optical paths, one 14 which reflects the light by about 10% on an incident surface 12 thereof and the other 13 which reflects about remaining 90% thereof on the high reflecting surface 11 thereof. Moreover, the optical path 13 is provided with a reflecting mirror 3 to be measured and light from the optical path 13 is incident into a first photo detector 15 while that from the optical path 14 into a second photo detector 17 provided near the reflecting mirror 3. Then, the intensity of the laser light of the optical path 13 is measured with the detector 15 shifted to a position 16 and at the same time, the intensity of the laser light of the optical path 14 with the detector 17. This enables measurement of the intensity of light at a high accuracy in terms of reflection factor and transmissivity without increase in the number of parts.

8. 发明专利

JPH01197345A SEALED STRUCTURE OF SEALING MATERIAL UTILIZED WITH INDIUM 失效
公开(公告)号：JPH01197345A
公开(公告)日：1989-08-09
申请号：JP2118888
申请日：1988-02-02
申请人： TOSHIBA CORP
发明人： TERA KAZUMI , FUJITA HIDEO
IPC分类号： C03C27/04 , H01S3/03 , H01S3/038
摘要： PURPOSE:To satisfactorily bond a discharge electrode and a glass block by utilizing a looped body in which a stepped part for cutting In by rubbing at a time of pressurization is provided to the inside of one end part. CONSTITUTION:In 8 is annularly held on the upper face of an annular stepped part 15 which has been formed by orthogonally projecting one end side of a looped body 6 having inner diameter slightly larger than the outer diameter of the part 5a to be sealed of a sealing material (e.g., cathode) 5 and the part 5a to be sealed is placed on the outer face of the other sealing material (e.g., glass block) 1 by making it nearly coaxial to a capillary part 4a worked to the sealing material 1. Then the sealing material 5 is coaxially inserted into the looped body 6 and In 8 is pressurized from the sealing material 5 side and cut by rubbing with both the angular part 18 of the part 5a to be sealed and the angular part 17 of the looped body 16 and the fresh face of In 8 is exposed and this exposed fresh face is joined to the outer peripheral face of the part 5a to be sealed while it is not oxidized and also the outer face of the sealing material 1 is bonded to the side face of the looped body 16.

9. 发明专利

JPS6415631A APPARATUS FOR MEASURING SCATTERING RATE OF REFLECTING MIRROR 失效
公开(公告)号：JPS6415631A
公开(公告)日：1989-01-19
申请号：JP17121187
申请日：1987-07-10
申请人： TOSHIBA CORP
发明人： NAKAYAMA MICHIO , FUJITA HIDEO
IPC分类号： G01M11/00
摘要： PURPOSE:To shut out ghost, by forming a light outputting port and a light detecting body so that their shapes are approximately the same as the luminous fluxes of a beam at positions corresponding to light path lengths from the emitting position of the beam to an introducing port and to a measuring surface. CONSTITUTION:A body to be measured 13 and a photodetector 14 are provided in a symmetrical pattern on both sides of a central point C on the diameter of a reflecting body 10, whose inner surface is a semispherical mirror. A laser beam L from a laser oscillator 12 is made to pass through an introducing port 15 and inputted into the body to be measured 13. The reflected light is outputted to the outside through a light passing out port 16. A diameter D2 of the outputting port 16 and a diameter D3 of the photodetector are set as shown in the Expression in the Figure. The scattered light at a measuring surface is reflected with a semispherical mirror 11. The diameter of the luminous flux of each scattered light at the position of the photodetector 14 becomes the same as the diameter of the luminous flux of the beam L at the measuring surface 13a. Thus the light is condensed. When a diameter D1 of the beam is made to be the same as the diameter D3 of the photodetector, ghost, which does not go out of the reflecting body 10 through the port 16, advances at the outside of the photodetector 14 and is not detected.

10. 发明专利

JPH02219288A SEALED-OFF GAS LASER DEVICE 失效
公开(公告)号：JPH02219288A
公开(公告)日：1990-08-31
申请号：JP3981289
申请日：1989-02-20
申请人： TOSHIBA CORP
发明人： TERA KAZUMI , FUJITA HIDEO
IPC分类号： H01S3/032
摘要： PURPOSE:To alleviate a discharge concentration by generating a discharge via a connecting path having a larger diameter at a cathode side than that at a fine conduit side and less than the inner diameter of a cylindrical discharge surface of the cathode. CONSTITUTION:A first connecting path 16 is enlarged in diameter of an opening in two stages from an opened part with a fine conduit 2 to the opening 17 of a cathode 7 side to form a large-diameter part 18 and a small-diameter part 19, which are both formed to be concentrically with the cylindrical part formed with the discharge face of the cathode 7. The opening 17 formed with the part 18 is opened substantially coaxially with inside from the edge 13 of the hollow part 10 of the cathode 7. That is, the path 16 is sequentially extended from the conduit 2 to the vicinity of the edge 13 of the cathode, and opened less than the inner diameter of the hollow part 10. Thus, a discharge is generated at an upper discharge surface 9 to prevent it from concentrating at the edge 13.

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