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1. 发明授权

US5050174A Laser device 失效
标题翻译：激光设备
公开(公告)号：US5050174A
公开(公告)日：1991-09-17
申请号：US480152
申请日：1990-02-14
申请人： Koichi Wani , Yasuhiro Shimada , Hidehito Kawahara , Mutsumi Mimasu , Tadaaki Miki
发明人： Koichi Wani , Yasuhiro Shimada , Hidehito Kawahara , Mutsumi Mimasu , Tadaaki Miki
IPC分类号： G03F7/20 , H01S3/081 , H01S3/106 , H01S3/10
CPC分类号： G03F7/70858 , H01S3/0811 , H01S3/106
摘要： A laser device includes an optical resonator comprising a laser medium and two totally reflecting mirrors disposed on respective sides of the laser medium. The laser device also has a wavelength selection element disposed between one of the totally reflecting mirrors and the laser medium. A partially reflecting mirror is disposed between the wavelength selection element and the laser medium. Any distortion and deterioration of the wavelength selection device are greatly reduced.

2. 发明授权

US5271026A Discharge excitation gas laser device 失效
标题翻译：放电激发气体激光装置
公开(公告)号：US5271026A
公开(公告)日：1993-12-14
申请号：US809180
申请日：1991-12-18
申请人： Naoki Kosugi , Yasuhiro Shimada , Hidehito Kawahara , Tadaaki Miki , Mutsumi Mimasu
发明人： Naoki Kosugi , Yasuhiro Shimada , Hidehito Kawahara , Tadaaki Miki , Mutsumi Mimasu
IPC分类号： H01S3/097 , H01S3/0971 , H01S3/0977 , H01S3/00
CPC分类号： H01S3/09775 , H01S3/097 , H01S3/0971 , H01S3/09713 , H01S3/09716 , H01S3/0977
摘要： In a discharge excitation gas laser device such as an excimer laser device provided with laser medium gas and a pair of electrodes opposite to each other in a gas-tight vessel, the laser medium gas is discharge-excited while inverting the polarity of a DC pulse voltage applied to the pair of electrodes opposite to each other for every pulse. In this way distribution of atoms and ions constituting the laser medium gas in the discharge region including the neighborhood of the main electrodes is made uniform even at a high repetition rate oscillation. Thus it is possible to realize a discharge excitation gas laser device having a good stability of DC pulse discharge without increasing unnecessarily the flow speed of the laser medium gas and no lowering in the pulse energy owing to a high efficiency operation.

3. 发明授权

US4991178A Laser apparatus 失效
公开(公告)号：US4991178A
公开(公告)日：1991-02-05
申请号：US499206
申请日：1990-03-19
申请人： Koichi Wani , Yasuhiro Shimada , Hidehito Kawahara , Tadaaki Miki , Yoshiro Ogata
发明人： Koichi Wani , Yasuhiro Shimada , Hidehito Kawahara , Tadaaki Miki , Yoshiro Ogata
IPC分类号： H01S3/106 , H01S3/137 , H01S3/225
CPC分类号： H01S3/137 , H01S3/1062 , H01S3/225
摘要： A laser apparatus includes an optical resonator having a laser medium and generating a laser light. A wavelength selection element selects a given wavelength of the laser light. The selected wavelength resides within a gain bandwidth of the laser medium. A sealed container houses the wavelength selection element. The sealed container may be filled with a gas. A density of the gas within the sealed container may be changed to vary the selected wavelength.

4. 发明授权

US5723939A Circular fluorescent lamp 失效
标题翻译：圆形荧光灯
公开(公告)号：US5723939A
公开(公告)日：1998-03-03
申请号：US575995
申请日：1995-12-21
申请人： Ikuhiro Okuno , Toshiyoshi Oga , Hidehito Kawahara , Masashi Sangen
发明人： Ikuhiro Okuno , Toshiyoshi Oga , Hidehito Kawahara , Masashi Sangen
IPC分类号： H01J61/32 , H01J63/02
CPC分类号： H01J61/322
摘要： This invention provides a compact, efficient and well-designed circular fluorescent lamp with high output power. The circular fluorescent lamp has less non-luminant region and good characteristics of luminous intensity distribution, and keeps high level of lamp lumen output. Circular arc tubes are disposed concentrically on the same plane. Electrodes are attached to the tube-end parts of the one side of the circular arc tubes respectively, and the other tube-end parts of non-electrode side are sealed. The circular arc tubes are joined each other near the tube-end parts of the non-electrode side with a bridge-jointed portion, so that a discharge path is formed between the electrodes inside the arc tubes. The tube outer diameter of the circular arc tubes is 14 mm, the circle outer diameter of the outer circular arc tube is 150 mm, and the circle inner diameter of the inner arc tube is 90 mm. The distance measured along the center line of the tube from the point corresponding radially to the end part of the bridge-jointed portion to the sealed tube-end part of the outer circular arc tube is 11 mm, and the distance measured along the center line of the tube from the point corresponding radially to the end part of the bridge-jointed portion to the sealed tube-end part of the inner circular arc tube is 6 mm.
摘要翻译：本发明提供了具有高输出功率的紧凑，高效和精心设计的圆形荧光灯。圆形荧光灯具有较少的非发光区域和良好的发光强度分布特性，并保持了较高的灯管流明输出。圆弧管同心地放置在同一平面上。电极分别连接到圆弧管一侧的管端部分，非电极侧的另一个管端部分被密封。圆弧管在非电极侧的管端部附近具有桥接部，从而在电弧管内的电极之间形成放电路径。圆弧管的管外径为14mm，外圆弧管的圆外径为150mm，内弧管的圆内径为90mm。沿着管子的中心线从径向对应于桥接部分的端部到外圆弧管的密封管端部分的距离测量的距离为11mm，沿着中心线测量的距离从径向对应于桥接部的端部到内圆弧管的密封管端部的管的直径为6mm。

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