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公开(公告)号：US5838712A
公开(公告)日：1998-11-17
申请号：US750691
申请日：1996-12-18
IPC分类号： H01S3/094 , H01S3/0941 , H01S5/024 , H01S3/09 , H01S3/091
CPC分类号： H01S3/042 , H01S3/025 , H01S3/0941 , H01S3/0407 , H01S3/061 , H01S3/09408 , H01S3/094096 , H01S5/02423
摘要： A diode-pumped high performance solid state laser has at least one pump module comprising at least two laser diode arrays which transversely irradiate a solid state laser rod. The path length of the radiation emitted by a laser diode array through the solid state laser rod and the required absorption path for this radiation, determined by the emission wavelength of this radiation and the doping of the laser-active medium, are adapted to one another extensively in different ways.
摘要翻译： PCT No.PCT / EP96 / 01151 Sec。 371日期：1996年12月18日 102（e）日期1996年12月18日PCT 1996年3月18日PCT公布。 第WO96 / 34435号公报 日期1996年10月31日二极管泵浦高性能固体激光器具有至少一个泵模块，其包括横向照射固态激光棒的至少两个激光二极管阵列。 由激光二极管阵列通过固态激光棒发射的辐射的路径长度和由该辐射的发射波长和激光活性介质的掺杂确定的用于该辐射的所需吸收路径彼此适配 广泛地以不同的方式。
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公开(公告)号：US6011643A
公开(公告)日：2000-01-04
申请号：US091908
申请日：1998-06-24
申请人： Joerg Wunderlich , Klaus Hiller , Frank Goepfert , Richard Wallenstein , Christhard Deter , Wolfram Biehlig , Juergen Kraenert
发明人： Joerg Wunderlich , Klaus Hiller , Frank Goepfert , Richard Wallenstein , Christhard Deter , Wolfram Biehlig , Juergen Kraenert
CPC分类号： H04N9/3129 , G02B26/101 , G02B27/48
摘要： In a device with a laser for image presentation in which the laser emits laser light of a defined coherence length L at a given wavelength .lambda. and in which there is arranged in the path of the laser light a first structure with which phase displacements can be carried out for individual photons of the laser light in accordance with a predetermined distribution, it is provided that the average path given by the ratio of the average root mean square of the phase displacement formed by the distribution and the magnitude of the wave vector k=2.pi./.lambda. of the laser is greater than the coherence length L multiplied by a factor of 1/(12).sup.1/2.
摘要翻译： PCT No.PCT / EP97 / 06024。 371日期：1998年6月24日 102（e）1998年6月24日PCT 1997年10月31日PCT公布。 公开号WO98 / 20385 PCT 日期1998年5月14日在具有用于图像呈现的激光的装置中，其中激光器以给定波长λ发射具有限定的相干长度L的激光，并且其中布置在激光路径中的第一结构， 可以根据预定分布对激光的单个光子进行位移，条件是由分布形成的相位偏移的平均均方根与波的大小之比给出的平均路径 激光的矢量k =2π/λ大于相干长度L乘以因子1 /（12）+ E，fra 1/2 + EE。
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公开(公告)号：US06606338B1
公开(公告)日：2003-08-12
申请号：US09624632
申请日：2000-07-24
申请人： Juergen Kraenert , Thoralf Springer
发明人： Juergen Kraenert , Thoralf Springer
IPC分类号： H01S308
CPC分类号： H01S3/1118 , H01S3/08072
摘要： A mode-synchronized solid-state laser comprising a laser medium inside a laser resonator which is formed by a resonator mirror and an output coupling mirror and which is folded by at least one concave folding mirror, with a saturable absorber inside the laser resonator and with at least one laser pump source whose pump beam pumps the laser medium, wherein the elongated resonator length L is a function of the pulse repetition frequency and the latter is determined by a distance between the resonator mirror and the output coupling mirror. An elliptic beam profile inside of the laser resonator which is caused by an inclination of an optical axis of the at least one concave folding mirror relative to a folded optical axis of the laser resonator is eliminated by an elliptic thermal lens in the laser medium whose optical action generates an ellipticity of the beam profile which is offset by 90° relative to the elliptic beam profile generated by the folding mirror, wherein, by virtue of the material characteristics, the crystallographic orientation and the geometric dimensioning of the laser medium and by a choice of intensity and intensity distribution of the pump beam in the laser medium, the degree of ellipticity of the thermal lens is adjusted in such a way that the most uniform possible energy density distribution occurs over the irradiated zone of the saturable absorber.
摘要翻译： 一种模式同步固态激光器，包括激光谐振器内的激光介质，该激光谐振器由谐振镜和输出耦合镜形成，并由至少一个凹折射镜折叠，并且在激光谐振器内部具有饱和吸收体， 至少一个激光泵源，其泵浦光泵浦激光介质，其中细长的谐振器长度L是脉冲重复频率的函数，后者由谐振镜和输出耦合镜之间的距离确定。 由激光谐振器的折射光轴相对于激光谐振器的折射光轴的光轴的倾斜引起的激光谐振器内部的椭圆形光束轮廓由激光介质中的椭圆形热透镜消除，该激光介质的光学 动作产生相对于由折叠镜产生的椭圆形光束轮廓偏移90°的光束轮廓的椭圆率，其中，通过材料特性，激光介质的结晶取向和几何尺寸以及选择 在激光介质中的泵浦光束的强度和强度分布的情况下，调节热透镜的椭圆度，使得在可饱和吸收体的照射区域上发生最均匀的可能的能量密度分布。
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公开(公告)号：US20100188644A1
公开(公告)日：2010-07-29
申请号：US12596102
申请日：2008-04-18
申请人： Juergen Kraenert , Wolfram Biehlig , Andreas Zintl
发明人： Juergen Kraenert , Wolfram Biehlig , Andreas Zintl
IPC分类号： G03B21/28
CPC分类号： H04N9/3129
摘要： A method and a device for projecting an image made up of pixels onto a projection surface, including a variable-intensity light source emitting a light beam and a decoupling device, and a deflection device directing the light beam onto a projection surface. In The light beam(s) are deflected such that the beams strike mirror facets of the polygonal mirror twice in a row. The diameter at which the beam strikes the first mirror facet of the polygonal mirror is adjusted such that it is dimensioned to practically not be cut by the facet edges. At the second strike, the light beam always intersects the mirror facet at the same location.
摘要翻译： 一种用于将由像素构成的图像投影到投影表面上的方法和装置，包括发射光束的可变强度光源和去耦装置，以及将光束引导到投影表面上的偏转装置。 在光束被偏转，使得光束连续地将多面镜的镜面刻划成两行。 调节光束撞击多面镜的第一镜面的直径，使得其尺寸实际上不被小面边缘切割。 在第二次冲击时，光束在相同的位置处始终与镜面相交。
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公开(公告)号：US6002505A
公开(公告)日：1999-12-14
申请号：US77413
申请日：1998-05-28
CPC分类号： G02B26/101 , H04N9/3129
摘要： In an arrangement for displaying images on a projection screen, which arrangement includes a laser, which emits a laser beam, and a deflecting device, which is provided for deflecting the laser beam, and an image-generating device which is connected to a controlling device for controlling the laser and the deflecting means. The image-generating device is switchable in two operating modes, the first operating mode being the standard operating mode for projecting, and the second being an operating mode in which the laser radiation is harmless to a person disposed in the region to which the laser has access. In this regard, a safety circuit is provided and comprises at least one sensor, by which a monitored region, which is larger than the region accessible to the laser, between the image-generating means and the projection screen is monitored as to the presence of objects, wherein the image-generating means is switchable into the second operating mode by means of the safety circuit, in the event of an object being present.
摘要翻译： PCT No.PCT / EP97 / 04834 Sec。 371日期：1998年5月28日 102（e）日期1998年5月28日PCT提交1997年9月6日PCT公布。 出版物WO98 / 15127 日期1998年4月9日在用于在投影屏幕上显示图像的布置中，包括发射激光束的激光器和用于偏转激光束的偏转装置以及图像产生装置 连接到用于控制激光器和偏转装置的控制装置。 图像生成装置可以以两种操作模式切换，第一操作模式是用于投影的标准操作模式，第二操作模式是其中激光辐射对设置在激光器所在的区域中的人无害的操作模式 访问。 在这方面，提供了一种安全电路，并且包括至少一个传感器，通过该传感器监测在图像产生装置和投影屏幕之间大于激光可访问的区域的监视区域，以便存在 对象，其中在存在对象的情况下，图像生成装置可通过安全电路切换到第二操作模式。
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