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公开(公告)号：US20090141753A1
公开(公告)日：2009-06-04
申请号：US11916372
申请日：2006-06-02
IPC分类号： H01S3/10
CPC分类号： H01S3/06754 , G09G3/002 , G09G5/02 , G09G2320/0242 , H01S3/0092 , H01S3/0675 , H01S3/094003 , H01S3/094007 , H01S3/10092 , H01S3/1618
摘要： There has been a problem that interference noise called speckle noise occurs in a two-dimensional image display device using laser, and there is no applicable green light source although the speckle noise can be reduced by using a multi-wavelength light source. The present invention adopts a Yb-doped clad pump fiber (103) which is a rare-earth-doped fiber as a laser activation substance, whereby a peak of a fluorescence spectrum can be significantly increased as compared with a case of using an oxide crystal, and a variation width of an oscillation wavelength can be increased. Further, since the rare-earth-doped fiber is used as a fiber amplifier without providing laser mirrors at both ends thereof, control for a resonator length, which has been required in a conventional device (wherein an oxide crystal is used as a laser medium), is dispensed with, and thereby high-speed wavelength control is achieved, resulting in reduction in speckle noise when it is mounted on a two-dimensional image display device.
摘要翻译： 存在在使用激光的二维图像显示装置中发生的称为斑点噪声的干扰噪声的问题，尽管通过使用多波长光源可以减少散斑噪声，但是不存在适用的绿色光源。 本发明采用作为激光活化物质的稀土掺杂光纤的Yb掺杂包层泵浦光纤（103），与使用氧化物晶体的情况相比，可以显着提高荧光光谱的峰值 ，并且可以增加振荡波长的变化宽度。 此外，由于稀土掺杂光纤被用作光纤放大器而不在其两端提供激光反射镜，所以在常规器件（其中氧化物晶体被用作激光介质）中所需要的谐振器长度的控制 ），从而实现高速波长控制，从而在安装在二维图像显示装置上时散斑噪声降低。
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公开(公告)号：US20080212621A1
公开(公告)日：2008-09-04
申请号：US12022616
申请日：2008-01-30
IPC分类号： H01S3/30
CPC分类号： H01S3/042 , G02F1/37 , H01S3/0405 , H01S3/06704 , H01S3/0675 , H01S3/094015 , H01S3/09415 , H01S3/1305 , H01S3/1306
摘要： It is designed to prevent an efficiency reduction caused by the heat generation of a rare-earth doped fiber in a wavelength converter.A wavelength converter of the present invention is provided with a laser resonator including a fiber containing an laser-active material and a fiber grating formed in the fiber, a laser light source for emitting an excitation light to the fiber, and a wavelength conversion element for converting a fundamental wave of a laser beam emitted from the laser resonator into a harmonic, wherein the fiber is coiled and has the outer side thereof coated with a heat radiating member having a reflection surface for reflecting light having a wavelength of an excitation light.
摘要翻译： 其设计用于防止在波长转换器中的稀土掺杂光纤的发热引起的效率降低。 本发明的波长转换器设置有激光谐振器，该激光谐振器包括含有激光活性材料的光纤和形成在光纤中的光纤光栅，用于向该光纤发射激发光的激光光源和用于 将从激光谐振器发射的激光束的基波转换成谐波，其中光纤被卷绕并且其外侧涂覆有具有用于反射具有激发光波长的光的反射表面的散热构件。
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公开(公告)号：US20080165812A1
公开(公告)日：2008-07-10
申请号：US11970619
申请日：2008-01-08
IPC分类号： H01S3/10
CPC分类号： H01S3/0675 , H01S3/005 , H01S3/094015 , H01S3/09415 , H01S3/1305 , H01S3/1312 , H01S3/137 , H01S3/2391 , H01S2301/02 , H04N9/3129 , H04N9/3161
摘要： The present invention aims to provide a wavelength converter capable of stably obtaining a W-class high-output green laser beam and a 2D image display device using this wavelength converter.By causing a polarization direction of a laser light source for generating an excitation light and that of a light emitted from an oscillator to orthogonally intersect, the deterioration of an excitation light source by an ASE is suppressed by a polarization splitting element provided between a laser resonator and the laser light source.
摘要翻译： 本发明旨在提供能够稳定地获得W级高输出绿色激光束的波长转换器和使用该波长转换器的2D图像显示装置。 通过使激光光源的偏振方向产生激发光和从振荡器发出的光正交相交的激光光源的偏振方向，通过设置在激光谐振器 和激光光源。
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公开(公告)号：US20080013574A1
公开(公告)日：2008-01-17
申请号：US11812732
申请日：2007-06-21
IPC分类号： H01S3/30
CPC分类号： H01S3/0675 , H01S3/005 , H01S3/06716 , H01S3/0809 , H01S3/0826 , H01S3/09415 , H01S3/1053 , H01S3/1055 , H01S3/1618 , H04N9/3129
摘要： The present invention concerns a laser light source device capable of multiwavelength oscillation. This laser light source device is provided with a laser light source; a laser cavity including a fiber, a first fiber grating provided at a side of the fiber toward the laser light source and having a plurality of reflection peaks, and a second fiber grating provided at a light emission end of the fiber and having a plurality of reflection peaks: a wavelength converter for converting a fundamental wave emitted from the laser cavity into a harmonic wave; a reflection wavelength varying unit capable of shifting the reflection wavelengths of the reflection peaks of the second fiber grating; and a controller for controlling phase matching conditions of the wavelength converter. Intervals between adjacent reflection peaks of the first fiber grating are different from those between adjacent reflection peaks of the second fiber grating.
摘要翻译： 本发明涉及能够进行多波长振荡的激光光源装置。 该激光光源装置设置有激光光源; 包括光纤的激光腔，设置在所述光纤的朝向所述激光光源的一侧并具有多个反射峰的第一光纤光栅，以及设置在所述光纤的发光端的第二光纤光栅，并且具有多个 反射峰：用于将从激光腔发射的基波转换为谐波的波长转换器; 反射波长变化单元，其能够移动第二光纤光栅的反射峰的反射波长; 以及用于控制波长转换器的相位匹配条件的控制器。 第一光纤光栅的相邻反射峰之间的间隔与第二光纤光栅的相邻反射峰之间的间隔不同。
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公开(公告)号：US08152314B2
公开(公告)日：2012-04-10
申请号：US11916041
申请日：2006-05-22
申请人： Toshifumi Yokoyama , Ken'ichi Kasazumi , Shin-ichi Kadowaki , Kiminori Mizuuchi , Hiroyuki Furuya , Kazuhisa Yamamoto
发明人： Toshifumi Yokoyama , Ken'ichi Kasazumi , Shin-ichi Kadowaki , Kiminori Mizuuchi , Hiroyuki Furuya , Kazuhisa Yamamoto
IPC分类号： G03B21/00
CPC分类号： G03B21/005
摘要： A display device (100) of the present invention has a first switch (3) and a second switch (4) on an upper surface of its casing, and includes a control circuit (18) for controlling the first switch (3) and the second switch (4) and a light source (19) inside the casing. The control circuit (18) performs control so that the light source (19) is turned on when the second switch (4) is pressed after a predetermined period of time has passed from when the first switch (3) was pressed. Thereby, the display device (100) of the present invention prevents entering of a person into a projection area before projection of video, and controls inadvertent start-up.
摘要翻译： 本发明的显示装置（100）在其壳体的上表面具有第一开关（3）和第二开关（4），并且包括用于控制第一开关（3）的控制电路（18）和 第二开关（4）和光源（19）。 控制电路（18）进行控制，使得当从第一开关（3）被按压经过预定时间段之后按下第二开关（4）时，光源（19）被接通。 因此，本发明的显示装置（100）防止在投影视频之前将人进入投影区域，并且控制无意的启动。
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26.发明授权Wavelength conversion element, laser light source, two-dimensional image display and laser processing system 有权波长转换元件，激光光源，二维图像显示和激光加工系统公开(公告)号：US08018646B2
公开(公告)日：2011-09-13
申请号：US11997099
申请日：2006-07-26
IPC分类号： G02F1/35
CPC分类号： G02F1/3558 , C30B15/00 , C30B29/30 , G02F1/3551 , G02F1/37 , G02F2202/20 , G02F2203/21
摘要： A wavelength conversion element is provided with a substrate including a nonlinear optical single crystal having a periodically poled structure, wherein a visible light transmittance of the substrate is 85% or higher when ultraviolet light is irradiated to the substrate. Further, a laser light having an average output of 1 W or more is outputted by shortening a wavelength of inputted laser light having a wavelength of 640 nm to 2000 nm. By improving visible light transmission characteristics when the ultraviolet light is irradiated in this way, a breakdown of crystal can be prevented and a stabilization of output characteristics at high output can be realized. As a result, an absorption of green light induced by ultraviolet light can also be suppressed and a saturation of output and the breakdown of crystal can be avoided.
摘要翻译： 波长转换元件设置有包括具有周期性极化结构的非线性光学单晶的衬底，其中当将紫外光照射到衬底时，衬底的可见光透射率为85％以上。 此外，通过缩短波长为640nm至2000nm的输入激光的波长，输出平均输出为1W以上的激光。 通过以这种方式照射紫外线时的可见光透射特性的改善，可以防止晶体的破坏，并且能够实现高输出下的输出特性的稳定化。 结果，也可以抑制紫外线诱发的绿光的吸收，可以避免输出的饱和和晶体的击穿。
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公开(公告)号：US20110012986A1
公开(公告)日：2011-01-20
申请号：US12920226
申请日：2009-03-23
IPC分类号： B41J15/14
CPC分类号： A23B4/002 , A23L3/00 , A23L13/00 , A23L13/03 , A23L15/00 , A23L17/00 , A23L17/75 , A23L19/05
摘要： Provided is a printing apparatus for printing information on a printing area of an object to be printed by irradiating the object to be printed with a first laser beam. The printing apparatus includes a light source for outputting the first laser beam, a light collecting optical system for collecting the first laser beam to the printing area of the object to be printed, and a scanning unit for performing scanning with the first laser beam. The object to be printed contains moisture at least in the printing area, and a wavelength of the first laser beam is 350 nm or more and 550 nm or less.
摘要翻译： 提供一种打印装置，用于通过用第一激光束照射要打印的对象来在要打印的对象的打印区域上打印信息。 打印装置包括用于输出第一激光束的光源，用于将第一激光束收集到待打印对象的打印区域的光收集光学系统和用于执行第一激光束的扫描的扫描单元。 要打印的对象至少在打印区域中含有水分，并且第一激光束的波长为350nm以上且550nm以下。
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公开(公告)号：US20100246207A1
公开(公告)日：2010-09-30
申请号：US12161667
申请日：2006-12-05
CPC分类号： G03B21/2033 , G02B6/001 , G03B21/2093 , G03B33/12 , H01S3/0675 , H01S3/06754 , H01S3/094003 , H01S3/094007 , H01S3/2383
摘要： There is a problem that in the connection portion between a rare-earth-doped double clad fiber and a single mode fiber, pumping light leaks in a portion having the coating, and the fiber generates heat partially with this energy and deteriorates. Also, there is another problem that the output is limited as the oscillation wavelength becomes shorter. Accordingly, in a laser light source device formed by combining a fiber laser and a fiber amplifier, by using the residual pumping light in the fiber laser as the pumping light in the fiber amplifier, it is possible to enhance the reliability by preventing the fiber deterioration caused by the residual pumping light. Further, by amplifying the output in the fiber amplifier in the latter stage without any limitation on the pumping light output, it is possible to increase an output of the oscillation light.
摘要翻译： 存在在稀土掺杂双包层光纤和单模光纤之间的连接部分中的泵浦光在具有涂层的部分中泄漏的问题，并且光纤以该能量部分地发热并劣化。 此外，还存在随着振荡波长变短而输出受到限制的另外一个问题。 因此，在通过组合光纤激光器和光纤放大器形成的激光光源装置中，通过使用光纤激光器中的残余泵浦光作为光纤放大器中的泵浦光，可以通过防止光纤劣化来提高可靠性 由残余泵浦光引起。 此外，通过在后级放大光纤放大器中的输出而对泵浦光输出没有任何限制，可以增加振荡光的输出。
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公开(公告)号：US07791790B2
公开(公告)日：2010-09-07
申请号：US12092694
申请日：2006-11-01
CPC分类号： G02F1/353 , G02B6/02204 , G02F2201/305 , H01S3/0675 , H01S3/13 , H01S3/1317
摘要： A wavelength converter including a fiber provided with a laser active substance and formed with first and second fiber gratings embedded in the fiber, a laser light source that allows pumping light to be incident on the fiber, a laser resonator formed by optically connecting the fiber and the laser light source, and a wavelength conversion element that converts the fundamental wave of a laser beam emitted from the laser resonator into a higher harmonic wave. The fiber absorbs a part of an output of the fundamental wave or the pumping light, and heats the second fiber grating. The temperature of the second fiber grating is adjusted in accordance with an output of the higher harmonic wave outputted from the wavelength conversion element.
摘要翻译： 一种波长转换器，包括设置有激光活性物质并形成有嵌入光纤中的第一和第二光纤光栅的光纤，允许泵浦光入射到光纤上的激光源，通过光纤连接光纤和 激光光源和将从激光谐振器发射的激光束的基波转换成高次谐波的波长转换元件。 光纤吸收基波或泵浦光的输出的一部分，并加热第二光纤光栅。 根据从波长转换元件输出的高次谐波的输出来调节第二光纤光栅的温度。
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公开(公告)号：US07769060B1
公开(公告)日：2010-08-03
申请号：US12066548
申请日：2006-09-13
IPC分类号： H01S3/10
CPC分类号： G03B21/2033 , G02F1/133621 , G03B21/2086 , H01S3/005 , H01S3/0405 , H01S3/042 , H01S3/0604 , H01S3/0627 , H01S3/08072 , H01S3/09415 , H01S3/109 , H01S3/1611 , H01S3/1671 , H01S3/1673 , H01S3/2383 , H01S5/024 , H01S5/02446 , H01S5/1014 , H01S5/4031
摘要： A laser light source having a semiconductor laser (102) for outputting pump light, and a laser resonator wherein a solid laser crystal (104) and a non-linear optical crystal (103) are connected by optical contact and a reflection coat (106) and a reflection coat (105) are on the opposed facets of the respective crystals. GdVO4 is the solid laser crystal (104) while LiNbO3 is the non-linear optical crystal (103), and the crystal axis of the solid laser crystal (104) is inclined with respect to the z axis of the non-linear optical crystal (103) within the z-x plane of the non-linear optical crystal (103). The thermal expansion coefficients of the solid laser crystal and of the non-linear optical crystal can be approximated to each other, thereby preventing separation of the bonded laser crystal and non-linear optical crystal due to different thermal expansion coefficients when heat is generated during laser oscillation, which stops laser oscillation.
摘要翻译： 具有用于输出泵浦光的半导体激光器（102）的激光光源和通过光学接触连接固体激光晶体（104）和非线性光学晶体（103）的激光谐振器，以及反射涂层（106） 和反射涂层（105）位于相应晶体的相对面上。 GdVO4是固体激光晶体（104），LiNbO 3是非线性光学晶体（103），固体激光晶体（104）的晶轴相对于非线性光学晶体的z轴倾斜 103）在非线性光学晶体（103）的zx平面内。 固体激光晶体和非线性光学晶体的热膨胀系数可以彼此近似，从而当激光产生热时，防止由于不同的热膨胀系数而导致的结合激光晶体和非线性光学晶体的分离 振荡，停止激光振荡。
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