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21.发明授权公开(公告)号：US09310487B2
公开(公告)日：2016-04-12
申请号：US14347938
申请日：2012-12-07
CPC分类号： G01S17/102 , G01S7/4815 , G01S7/4818 , G01S7/484 , G01S17/107 , G01S17/58 , G01S17/95 , Y02A90/19
摘要： A lidar includes CW laser light sources that oscillate CW laser light rays with wavelengths different from each other; an optical multiplexing coupler that mixes the CW laser light rays oscillated by the CW laser light sources; an optical branching coupler that splits the CW laser light passing through the mixing by the optical multiplexing coupler; a light modulator that modulates first CW laser light split by the optical branching coupler; and an optical fiber amplifier that amplifies the laser light modulated by the light modulator, in which a transmit-receive optical system irradiates a target with the laser light amplified by the optical fiber amplifier, and receives scattered light of the laser light by the target.
摘要翻译： 激光雷达包括CW激光光源，其振荡具有彼此不同波长的CW激光光线; 光复用耦合器，其混合由CW激光光源振荡的CW激光; 光分路耦合器，其通过光复用耦合器分离通过混合的CW激光; 调制由光分路耦合器分离的第一CW激光的光调制器; 以及放大由光调制器调制的激光的光纤放大器，其中发射接收光学系统用由光纤放大器放大的激光照射目标，并且由目标接收激光的散射光。
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公开(公告)号：US07295290B2
公开(公告)日：2007-11-13
申请号：US10520128
申请日：2003-05-30
IPC分类号： G01C3/08
CPC分类号： G01S7/481 , G01S7/48 , G01S7/4811 , G01S7/4813 , G01S7/4818 , G01S7/484 , G01S7/499 , G01S17/06 , G01S17/95 , G02F1/39 , Y02A90/19
摘要： To obtain a coherent laser radar device that realizes high reliability and the high output of a transmitted light, the device includes a first optical coupler that branches a laser beam from a laser source into two lights, a local light and a transmitted light, an optical modulator that modulates the transmitted light, a space type optical amplifier that amplifies the modulated transmitted light, a transmitting/receiving optical system that applies the amplified transmitted light toward a target and receives a scattered light from the target, a transmitting/receiving light splitting device that splits the transmitted light and the received light, a second optical coupler that mixes the local light and the split received light together, a photodetector that detects heterodyne of a mixed light, a beat signal amplifier that amplifies a detected signal, a signal processing device that processes an amplified signal, and a display device that displays a processed result. The first and second optical couplers and an optical modulator are structured by polarization maintained type optical elements, and an optical path that extends from the laser source to the space type optical amplifier through the first optical coupler, an optical path that extends from the transmitting/receiving light splitting device to the photodetector through the second optical coupler, and an optical path that extends from the first optical coupler to the second optical coupler are connected by polarization maintained type single mode optical fibers.
摘要翻译： 为了获得实现高可靠性和透射光的高输出的相干激光雷达装置，该装置包括第一光耦合器，其将来自激光源的激光束分成两个光，局部光和透射光，光学 调制透射光的调制器，放大经调制的透射光的空间型光放大器，将放大的透射光施加到目标并接收来自目标的散射光的发射/接收光学系统，发射/接收分光装置 将透射光和接收光分开的第二光耦合器，将局部光和分离的接收光混合在一起的第二光耦合器，检测混合光的外差的光电检测器，放大检测信号的拍频信号放大器，信号处理装置 处理放大信号，以及显示处理结果的显示装置。 第一和第二光耦合器和光调制器由偏振维持型光学元件构成，以及通过第一光耦合器从激光源延伸到空间型光放大器的光路，从发射/ 通过所述第二光耦合器将光分离装置接收到所述光电检测器，并且从所述第一光耦合器延伸到所述第二光耦合器的光路通过偏振维持型单模光纤连接。
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公开(公告)号：US07042919B2
公开(公告)日：2006-05-09
申请号：US10343938
申请日：2001-06-21
IPC分类号： H01S3/091
CPC分类号： H01S3/07 , H01S3/042 , H01S3/0606 , H01S3/08072 , H01S3/08095 , H01S3/0813 , H01S3/0941 , H01S3/23 , H01S3/2316
摘要： A pumping module is provided with a first square rod group including a first square rod having two heat sinking surfaces normal to a direction of y axis perpendicular to an optical axis, and a second square rod having two heat sinking surfaces normal to a direction of x axis perpendicular to the optical axis and the direction of the y axis, and a second square rod group including a third square rod having two heat sinking surfaces normal to the direction of the y axis and a fourth square rod having two heat sinking surfaces normal to the direction of the x axis. A polarization rotator is disposed between the first and second square rod groups, for rotating a polarization of laser light passing therethrough by 90 degrees.
摘要翻译： 泵送模块设置有第一方棒组，其包括具有垂直于垂直于光轴的y轴方向的两个散热表面的第一方棒，以及具有垂直于x方向的两个散热表面的第二方棒 以及第二方棒组，其包括具有垂直于y轴方向的两个散热表面的第三方棒，以及具有与所述y轴方向垂直的两个散热表面的第四方棒 x轴的方向。 偏振旋转器设置在第一和第二方棒组之间，用于将通过其的激光的偏振旋转90度。
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24.发明授权公开(公告)号：US08736957B2
公开(公告)日：2014-05-27
申请号：US13205047
申请日：2011-08-08
申请人： Takao Endo , Yuzo Nakano , Takayuki Yanagisawa , Yoshihito Hirano
发明人： Takao Endo , Yuzo Nakano , Takayuki Yanagisawa , Yoshihito Hirano
CPC分类号： G02B27/26
摘要： A transmitted light selecting device includes a first light selecting unit having a polarizing filter for allowing an image light ray having one polarization direction to pass therethrough; a phase difference film for providing phase differences to the light ray passing through the polarizing filter to emit light, in which light rays having polarization directions coexist, toward a viewer; a second light selecting unit having a polarizing filter having a polarized light transmission axis perpendicular to that of the polarizing filter; and a phase difference film for providing phase differences to a light ray passing through the polarizing filter to emit light, in which light rays having polarization directions coexist, toward the viewer.
摘要翻译： 透射光选择装置包括：第一光选择单元，具有用于允许具有一个偏振方向的图像光线通过的偏振滤光器; 相位差膜，用于向穿过偏振滤光器的光线提供相位差，以发射具有偏振方向的光线共享的光; 具有偏振光滤光器的第二光选择单元，所述偏振滤光器具有与所述偏振滤光器的偏振光透射轴垂直的偏振光 以及相位差膜，用于向穿过偏振滤光器的光线提供相位差，以向观看者发射具有偏振方向的光线共享的光。
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25.发明申请公开(公告)号：US20120212814A1
公开(公告)日：2012-08-23
申请号：US13205047
申请日：2011-08-08
申请人： Takao ENDO , Yuzo Nakano , Takayuki Yanagisawa , Yoshihito Hirano
发明人： Takao ENDO , Yuzo Nakano , Takayuki Yanagisawa , Yoshihito Hirano
CPC分类号： G02B27/26
摘要： A transmitted light selecting device includes a first light selecting unit (2a) having a polarizing filter (4a) for allowing an image light ray having one polarization direction to pass therethrough, and a phase difference film (5A) for providing phase differences to the light ray passing through the polarizing filter (4a) to emit light in which light rays having polarization directions coexist toward a viewer, and a second light selecting unit (2b) having a polarizing filter (4b) having a polarized light transmission axis perpendicular to that of the polarizing filter (4a), and a phase difference film (5B) for providing phase differences to a light ray passing through the polarizing filter (5b) to emit light in which light rays having polarization directions coexist toward the viewer.
摘要翻译： 透射光选择装置包括：第一光选择单元（2a），具有用于使具有一个偏振方向的图像光线通过的偏振滤光器（4a）;以及用于向光提供相位差的相位差膜（5A） 射线通过偏振滤光器（4a）以发射具有偏振方向的光线朝向观看者共存的光;以及第二光选择单元（2b），具有偏振滤光器（4b），偏振滤光器（4b）的偏振光透射轴垂直于 偏振滤光器（4a）和相位差膜（5B），用于对通过偏振滤光器（5b）的光线提供相位差，以发出具有偏振方向的光线朝向观看者共存的光。
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公开(公告)号：US06853670B2
公开(公告)日：2005-02-08
申请号：US10329471
申请日：2002-12-27
IPC分类号： H01S3/08
CPC分类号： H01S3/08045 , H01S3/08 , H01S3/0805 , H01S3/08059 , H01S3/08072
摘要： Heretofore, if the beam size of the resonance mode is made small in a long resonator length, there arises a problem that the operation of the laser resonator becomes easy to be unstable and hence the adjustment thereof becomes difficult. A laser resonance includes: a laser material; a telescope for magnifying a laser beam which has been made incident from the laser material and for reducing a laser beam which has been made incident from the side opposite thereto; a flat reflecting mirror for reflecting the laser beam which has been made incident from said telescope; a telescope for magnifying the laser beam which has been reflected by the flat reflecting mirror to be reduced by the telescope and to be amplified by the laser material to be made incident thereto; and a flat reflecting mirror for reflecting the laser beam which has been made incident from the telescope. The telescope having suitable magnification is selected for the resonator length, whereby the beam size of the resonance mode at the center of the resonator can be arbitrarily adjusted and the stable resonator which has the small beam size with the long resonator length can be constructed.
摘要翻译： 迄今为止，如果谐振模式的光束尺寸在长的谐振器长度上变小，则出现激光谐振器的操作变得容易不稳定并因此难以进行调整的问题。 激光共振包括：激光材料; 用于放大从激光材料入射的激光束并用于减少从其相对侧入射的激光束的望远镜; 用于反射从所述望远镜入射的激光束的平面反射镜; 用于放大由平面反射镜反射的激光束的望远镜，由望远镜缩小并被要被入射的激光材料放大; 以及用于反射从望远镜入射的激光束的平面反射镜。 对于谐振器长度选择具有合适放大率的望远镜，由此可以任意调整谐振器中心处的谐振模式的波束尺寸，并且可以构造具有长谐振器长度的具有小波束尺寸的稳定谐振器。
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公开(公告)号：US09214784B2
公开(公告)日：2015-12-15
申请号：US14374696
申请日：2012-03-19
IPC分类号： H01S3/091 , H01S5/04 , G02F1/377 , H01S3/109 , H01S3/06 , H01S3/0941 , H01S3/16 , H01S3/04 , G02F1/35
CPC分类号： H01S5/041 , G02F1/377 , G02F2001/3509 , H01S3/0401 , H01S3/0405 , H01S3/0612 , H01S3/0615 , H01S3/0621 , H01S3/0625 , H01S3/0627 , H01S3/09415 , H01S3/109 , H01S3/1611 , H01S3/1673 , H01S2301/02
摘要： An end surface 3b of a solid-state laser element 3 is sloped in such a way that, assuming that laser light is incident upon air from the end surface, an angle of incidence which a normal to an inner side of the end surface forms with a traveling direction of the laser light substantially matches the Brewster angle at the incidence plane, an end surface 4a of a wavelength conversion element 4 is sloped in such a way that, assuming that the laser light is incident upon air from the end surface, an angle of incidence which a normal to an inner side of the end surface forms with a traveling direction of the laser light substantially matches the Brewster angle at the incidence plane, and the end surface 3b and the end surface 4b are arranged in such a way as to be opposite to each other.
摘要翻译： 固体激光元件3的端面3b以这样的方式倾斜，即假设激光从端面入射到空气上，与端面的内侧垂直的入射角与 激光的行进方向基本上与入射面处的布鲁斯特角度匹配，波长转换元件4的端面4a倾斜，假设激光从端面入射到空气上， 与激光的行进方向形成的端面的内侧的法线的入射角基本上与入射面处的布鲁斯特角度匹配，端面3b和端面4b以如下方式配置： 相互对立。
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公开(公告)号：US06901102B1
公开(公告)日：2005-05-31
申请号：US09576315
申请日：2000-05-22
CPC分类号： H01S3/10092 , H01S3/005 , H01S3/08059 , H01S3/0816 , H01S3/083 , H01S3/1075
摘要： A standing wave self-compensating laser resonator for preventing the utilization efficiency of a laser beam from being lowered, while at the same time, improving the quality of the laser beam wherein, a first reflecting apparatus 21 having first and second reflecting surfaces 21a, 21b disposed at a right angle to each other and a second reflecting apparatus 22 having third and fourth reflecting surfaces 22a, 22b disposed at a right angle to each other face each other such that ridges 21c, 22c are orthogonal, a third reflecting apparatus 123 having two reflecting surfaces which are approximately parallel to and face from each other is provided between the second reflecting surface 21b and fourth reflecting surface 22b, a laser medium 23 is provided between the first reflecting surface 21a and third reflecting surface 22a, and the laser beam is not incident on the ridges 21c, 22c.
摘要翻译： 一种用于防止激光束的利用效率降低的驻波自补偿激光谐振器，同时提高激光束的质量，其中，具有第一反射面21a和第二反射面21a的第一反射装置21， 21b彼此成直角地配置，第二反射装置22具有彼此成直角配置的第三和第四反射面22a，22b，使得脊21c，22c正交， 在第二反射面21b和第四反射面22b之间设置有具有大致平行且彼此相对的两个反射面的第三反射装置123，在第一反射面21a和第三反射面21b之间设置有激光介质23 表面21a，并且激光束不入射到脊21c，22c上。
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公开(公告)号：US06469778B2
公开(公告)日：2002-10-22
申请号：US09758421
申请日：2001-01-12
申请人： Kimio Asaka , Yoshihito Hirano , Takayuki Yanagisawa , Shusou Wadaka , Yasuisa Ooga , Etsuo Sugimoto
发明人： Kimio Asaka , Yoshihito Hirano , Takayuki Yanagisawa , Shusou Wadaka , Yasuisa Ooga , Etsuo Sugimoto
IPC分类号： G01P336
CPC分类号： G01S7/4818 , G01S7/486 , G01S17/10
摘要： A coherent laser radar system includes a pulsed laser oscillating a pulsed laser beam which is split into two parts by an optical divider. A first part of the two is transmitted as a transmitted beam via a beam splitter. A second part is supplied to a delay line via a coupling optics and others to be delayed by a predetermined time as a local beam, and is incident onto an optical coupler. The received beam from the target is incident onto the optical coupler via a scanning optics and so on. A photodetector carries out the coherent detection of the light beam coupled by the optical coupler. A signal processor computes a target velocity and the like from a signal generated by the detection and converted into a digital signal by an A/D converter. This makes it possible to solve a problem of a conventional system in that the system configuration is complicated and expensive.
摘要翻译： 相干激光雷达系统包括脉冲激光振荡脉冲激光束，该激光束通过光学分配器分成两部分。 两者的第一部分通过分束器作为透射光束传输。 第二部分经由耦合光学器件提供给延迟线，而其它部分被延迟预定时间作为局部光束，并入射到光耦合器上。 来自目标的接收光束通过扫描光学器件等入射到光耦合器上。 光电检测器执行由光耦合器耦合的光束的相干检测。 信号处理器从由检测产生的信号中计算出目标速度等并由A / D转换器转换成数字信号。 这使得可以解决常规系统的问题，因为系统配置是复杂和昂贵的。
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公开(公告)号：US20150016484A1
公开(公告)日：2015-01-15
申请号：US14374696
申请日：2012-03-19
IPC分类号： H01S5/04
CPC分类号： H01S5/041 , G02F1/377 , G02F2001/3509 , H01S3/0401 , H01S3/0405 , H01S3/0612 , H01S3/0615 , H01S3/0621 , H01S3/0625 , H01S3/0627 , H01S3/09415 , H01S3/109 , H01S3/1611 , H01S3/1673 , H01S2301/02
摘要： An end surface 3b of a solid-state laser element 3 is sloped in such a way that, assuming that laser light is incident upon air from the end surface, an angle of incidence which a normal to an inner side of the end surface forms with a traveling direction of the laser light substantially matches the Brewster angle at the incidence plane, an end surface 4a of a wavelength conversion element 4 is sloped in such a way that, assuming that the laser light is incident upon air from the end surface, an angle of incidence which a normal to an inner side of the end surface forms with a traveling direction of the laser light substantially matches the Brewster angle at the incidence plane, and the end surface 3b and the end surface 4b are arranged in such a way as to be opposite to each other.
摘要翻译： 固体激光元件3的端面3b以这样的方式倾斜，即假设激光从端面入射到空气上，与端面的内侧垂直的入射角与 激光的行进方向基本上与入射面处的布鲁斯特角度匹配，波长转换元件4的端面4a倾斜，假设激光从端面入射到空气上， 与激光的行进方向形成的端面的内侧的法线的入射角基本上与入射面处的布鲁斯特角度匹配，端面3b和端面4b以如下方式配置： 相互对立。
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