-
公开(公告)号:US5214659A
公开(公告)日:1993-05-25
申请号:US604634
申请日:1990-10-29
申请人: Mitsugu Terada , Ken Ohmata , Kazuo Shimazaki , Yasuo Oeda , Yuichiro Terashi
发明人: Mitsugu Terada , Ken Ohmata , Kazuo Shimazaki , Yasuo Oeda , Yuichiro Terashi
CPC分类号: H01S3/137 , H01S3/1062 , H01S3/225
摘要: Angles of inclination of the two wavelength selection elements arranged on an optical path of a laser beam source are varied to make a laser output variable. Light transmitting ranges of the two wavelength selection elements are coincided with each other so as to adjust the light wavelength bands, thereby the laser beam is narrowed without increasing its fineness.
-
公开(公告)号:US5170224A
公开(公告)日:1992-12-08
申请号:US604635
申请日:1990-10-29
申请人: Mitsugu Terada , Ken Ohmata , Kazuo Shimazaki , Yasuo Oeda , Yuichiro Terashi
发明人: Mitsugu Terada , Ken Ohmata , Kazuo Shimazaki , Yasuo Oeda , Yuichiro Terashi
CPC分类号: G01J9/00 , G01J2003/1239 , G01J2003/1243 , G01J3/2803
摘要: This invention is provided with a wavelength selecting means for uses in selectively receiving beam in compliance with each of a reference beam and a measured beam in order to simplify a correction or comparison of oscillating wavelengths in the laser device and further to improve a reliability and a controlling responsive speed.
-
公开(公告)号:US5319441A
公开(公告)日:1994-06-07
申请号:US114287
申请日:1993-09-01
申请人: Mitsugu Terada , Ken Ohmata , Michito Uehara , Hideaki Shibata , Yasuo Oeda , Yuichiro Terashi
发明人: Mitsugu Terada , Ken Ohmata , Michito Uehara , Hideaki Shibata , Yasuo Oeda , Yuichiro Terashi
CPC分类号: G01J9/0246 , G01J2003/265
摘要: A laser light, whose wavelength is to be measured, is introduced into an etalon, a concentric circular interference stripe derived from the etalon is irradiated onto a one-dimensional photodetector array and a diameter of the interference stripe is measured to measure the wavelength of the laser light. Alternatively, if a reference laser light of known wavelength is introduced into the etalon, as described above, a wavelength measurement of extremely high accuracy can be made without being affected by positional deviations of the optical system.
摘要翻译: 将要测量其波长的激光引入标准具中,将衍生自标准具的同心圆形干涉条纹照射到一维光电检测器阵列上,并测量干涉条纹的直径以测量波长 激光灯。 或者,如果将已知波长的参考激光引入标准具,如上所述,可以在不受光学系统的位置偏差的影响的情况下进行极高精度的波长测量。
-
公开(公告)号:US5197078A
公开(公告)日:1993-03-23
申请号:US708498
申请日:1991-05-31
申请人: Mitsugu Terada , Ken Ohmata , Michito Uehara , Hideaki Shibata , Yasuo Oeda , Yuichiro Terashi
发明人: Mitsugu Terada , Ken Ohmata , Michito Uehara , Hideaki Shibata , Yasuo Oeda , Yuichiro Terashi
CPC分类号: H01S3/036 , H01S3/034 , H01S3/0346
摘要: A gas laser apparatus having transparent laser windows provided on a laser chamber body, in which operating gases is sealed if necessary, comprising circulation means connected to the laser chamber body through an intake port and a discharge port for circulating gases within the laser chamber body and filtration means disposed in said circulation means, further comprising cutoff means for preventing the laser windows from being stained and open and closeably cutting off between the laser chamber body and the laser windows, and having a construction wherein in replacing the laser window, the cutoff means is once placed in a cutoff state, and the laser window is separated from the laser chamber body to place the laser window.
-
公开(公告)号:US5251226A
公开(公告)日:1993-10-05
申请号:US775937
申请日:1991-11-04
申请人: Shuntaro Watanabe , Yasuo Oeda , Ken Ohmata , Michito Uehara , Mitsugu Terada , Hideaki Shibata , Yuichiro Terashi
发明人: Shuntaro Watanabe , Yasuo Oeda , Ken Ohmata , Michito Uehara , Mitsugu Terada , Hideaki Shibata , Yuichiro Terashi
CPC分类号: H01S3/038
摘要: A discharge exciting excimer laser device comprises a pair of main discharge electrodes, a dielectric and an auxiliary electrode. The dielectric is in a cylindrical form and has a side opposed to one of the main discharge electrodes, which side is formed into a flat plate-like portion. The auxiliary electrode is embraced within the dielectric leaving a space and is opposed to one of the main discharge electrodes with the flat plate-like portion of the dielectric sandwiched therebetween. Such a construction increases laser output and improves insulating performance.
-
公开(公告)号:US4380368A
公开(公告)日:1983-04-19
申请号:US179645
申请日:1980-08-20
申请人: Ken Ohmata , Hideya Aoki , Naoyuki Tamura
发明人: Ken Ohmata , Hideya Aoki , Naoyuki Tamura
CPC分类号: B24B29/005 , B24B19/028 , G03B21/60 , Y10T428/12736 , Y10T428/12986 , Y10T428/12993 , Y10T428/24355 , Y10T428/24446 , Y10T428/2457
摘要: A projection screen comprises a metal plate member having substantially independent short raised ridges uniformly over the surface. In a process for treating the surface of a metal plate member, a metal plate member and a rough surface contacting the surface of the metal plate member are moved along respective axes intersecting at a certain angle to form raised ridges of typically 100 microns or less in length.
摘要翻译: 投影屏幕包括在表面上均匀地具有基本上独立的短凸起脊的金属板构件。 在处理金属板构件的表面的过程中,金属板构件和与金属板构件的表面接触的粗糙表面沿着与一定角度相交的相应轴线移动,以形成典型地为100微米或更小的凸起脊 长度。
-
-
-
-
-