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公开(公告)号：US20050002619A1
公开(公告)日：2005-01-06
申请号：US10902308
申请日：2004-07-30
申请人： Tsutomu Hamada , Shinya Kyozuka , Tomo Baba , Hideo Nakayama
发明人： Tsutomu Hamada , Shinya Kyozuka , Tomo Baba , Hideo Nakayama
CPC分类号： G02B6/4249
摘要： A light-emitting device includes 16 vertical-cavity surface-emitting laser diodes (VCSELs) disposed like a 4×4 grid, for example, in a sufficiently narrower range than the end surface of an optical fiber. The 16 VCSELs disposed in the light-emitting device emit optical signals in the same direction. Since the VCSELs are disposed with a concentration in the sufficiently narrower range than the end surface of the optical fiber as described above, if the optical signals emitted from the VCSELs are spread, almost all optical signals generated by the light-emitting device are incident on the end surface of the optical fiber and are transmitted through the optical fiber.
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公开(公告)号：US06650683B2
公开(公告)日：2003-11-18
申请号：US10228217
申请日：2002-08-27
IPC分类号： H01S5183
CPC分类号： H01S5/18394 , H01S5/0421 , H01S5/0425 , H01S5/18311 , H01S5/18338 , H01S5/18388 , H01S2301/166 , H01S2301/18
摘要： The present invention provides a surface emitting semiconductor laser, comprising: a semiconductor substrate having sequentially layered thereon a lower multi-layer mirror, an active layer region, and an upper multi-layer mirror that, together with the lower multi-layer mirror, contributes to the formation of a cavity; an upper electrode disposed on an upper layer of the upper multi-layer mirror and provided with an aperture that forms an emission region of a laser beam generated at the active layer region; and a current confinement portion disposed between the upper electrode and the lower multi-layer mirror and provided with an aperture that forms a current path; wherein an aperture diameter of the upper electrode and an aperture diameter of the current confinement portion are determined such that a difference between an optical loss of the cavity in a higher-order lateral mode of the laser beam and an optical loss of the cavity in a fundamental lateral mode of the laser beam becomes a value in the vicinity of a maximum value, and the higher-order lateral mode is suppressed, and at least one of the aperture formed in the upper electrode and the aperture of the current confinement portion is formed into a two-fold symmetrical configuration having long and short axes with respect to arbitrary two axial directions orthogonal to each other in a plane.
摘要翻译： 本发明提供一种表面发射半导体激光器，包括：半导体衬底，其上依次层叠有下层多层反射镜，有源层区域和上层多层反射镜，其与下层多层反射镜一起贡献 形成一个空腔; 上电极，其设置在所述上多层反射镜的上层上，并且设置有形成在所述有源层区域处产生的激光束的发射区域的孔; 以及电流限制部分，其设置在所述上电极和所述下多层反射镜之间，并且设置有形成电流路径的孔; 其中确定上限电极的孔径和电流限制部分的孔径直径，使得激光束的高阶横向模式中的空腔的光学损耗与腔室的光损耗之差 激光束的基本横向模式变为最大值附近的值，并且抑制高阶横向模式，并且形成在上电极中形成的孔和电流限制部的孔中的至少一个 成为具有相对于平面中彼此正交的任意两个轴向方向的长轴和短轴的双重对称构型。
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公开(公告)号：US06590917B2
公开(公告)日：2003-07-08
申请号：US09321711
申请日：1999-05-28
申请人： Hideo Nakayama , Akira Sakamoto , Takeshi Nakamura , Fumio Koyama
发明人： Hideo Nakayama , Akira Sakamoto , Takeshi Nakamura , Fumio Koyama
IPC分类号： H01S520
CPC分类号： H01S5/18361 , H01S5/18308 , H01S5/18311 , H01S5/18394 , H01S5/423 , H01S2301/163 , H01S2301/166
摘要： A surface emitting laser and a surface emitting laser array capable of high-luminance optical output in fundamental transverse mode, which can be produced easily with good reproducibility and with small position variation. The surface emitting laser has an active layer region composed of an active layer and upper and lower spacer layers deposited on both sides thereof and reflection layers deposited on both sides of the active layer region, an upper reflecting layer deposited on the upper spacer layer of the active layer region, a lower reflecting layer deposited on the lower spacer layer of the active layer region, and a secondary cavity formed by a first mode control layer and a second mode control layer placed on the periphery of the region of emission of the laser beam at the upper reflecting layer.
摘要翻译： 表面发射激光器和表面发射激光器阵列，其能够在基本横向模式下具有高亮度光学输出，其可以容易地以良好的再现性和小的位置变化产生。表面发射激光器具有由有源层 并且沉积在其两侧上的上隔离层和下间隔层以及沉积在有源层区两侧的反射层，沉积在有源层区的上间隔层上的上反射层，沉积在下间隔层上的下反射层 以及由位于上反射层的激光束的发射区域的周围的第一模式控制层和第二模式控制层形成的次级空腔。
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公开(公告)号：US06529541B1
公开(公告)日：2003-03-04
申请号：US09714980
申请日：2000-11-20
IPC分类号： H01S5183
CPC分类号： H01S5/18394 , H01S5/0425 , H01S5/18311 , H01S5/18355 , H01S5/18375 , H01S5/18377 , H01S5/18388 , H01S2301/166
摘要： A surface emitting semiconductor laser that is easy to manufacture and has a high-intensity fundamental lateral mode optical output power. The surface emitting semiconductor laser has a semiconductor substrate on which are sequentially laminated a lower n-type DBR layer, an active layer region, an upper p-type DBR layer, a p-side electrode that is an upper layer of the upper n-type DBR layer and functions as an upper electrode provided with an aperture that forms an emission region for a laser beam, and a current confinement portion formed by oxidization. On the basis of the reflectance of a cavity in a region corresponding to the p-side electrode, a metal aperture diameter (Wmetal) of the aperture and a diameter (Woxide) of the current confinement portion are determined such that the difference between an optical loss of a cavity in a higher-order lateral mode of a laser beam and an optical loss of a cavity in a fundamental lateral mode of a laser beam becomes larger.
摘要翻译： 一种易于制造且具有高强度基本横向模式光输出功率的表面发射半导体激光器。 表面发射半导体激光器具有半导体衬底，其上依次层叠下n型DBR层，有源层区域，上p型DBR层，作为上层n型DBR层的上层的p侧电极， 型的DBR层，并且作为设置有形成激光束的发射区域的孔的上电极和通过氧化形成的电流限制部分起作用。 基于对应于p侧电极的区域中的空腔的反射率，确定孔的金属孔直径（Wmetal）和电流限制部分的直径（Woxide），使得光学 在激光束的高阶横向模式中的腔的损失和激光束的基本横向模式中的空腔的光学损耗变大。
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公开(公告)号：US5963242A
公开(公告)日：1999-10-05
申请号：US739220
申请日：1996-10-29
申请人： Hideo Nakayama , Hiromi Otoma , Nobuaki Ueki , Yasuji Seko , Akemi Murakami , Mario Fuse , Masao Ito , Izumi Iwasa
发明人： Hideo Nakayama , Hiromi Otoma , Nobuaki Ueki , Yasuji Seko , Akemi Murakami , Mario Fuse , Masao Ito , Izumi Iwasa
CPC分类号： B41J2/45
摘要： An image recording apparatus has an array light source having a plurality of light-emitting elements arrayed in a predetermined density; a photosensitive member exposed to light beams emitted from the plural light-emitting elements so that images are recorded by fixing a traveling path of the light beams from the plural light-emitting elements to the photosensitive member and by moving the photosensitive member relative to the array light source; a beam-converging unit which intercrosses a bundle of the light beams emitted from the light-emitting elements onto a beam-conversion point; and an focusing unit disposed between the beam-converging unit and the photosensitive member, which images the light beams emitted from the plural of light-emitting elements and intercrossed by the beam-converging unit onto the photosensitive member.
摘要翻译： 一种图像记录装置，具有排列成规定密度的多个发光元件的阵列光源; 一个感光元件暴露于从多个发光元件发射的光束上，使得通过将来自多个发光元件的光束的行进路径固定在感光元件上并通过使感光元件相对于阵列移动来记录图像 光源; 光束会聚单元，其将从发光元件发射的光束交叉到光束转换点; 以及设置在所述光束会聚单元和所述感光构件之间的聚焦单元，其对从所述多个发光元件发射的光束进行成像，并且通过所述光束会聚单元与所述感光构件交叉。
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公开(公告)号：US5563901A
公开(公告)日：1996-10-08
申请号：US420822
申请日：1995-04-12
申请人： Hiromi Otoma , Nobuaki Ueki , Hideki Fukunaga , Hideo Nakayama
发明人： Hiromi Otoma , Nobuaki Ueki , Hideki Fukunaga , Hideo Nakayama
摘要： In a semiconductor laser array in which a semiconductor laser element having a horizontal-direction cavity, and plural outer inclined reflecting mirrors capable of reflecting laser light projected from the semiconductor laser element along a specific direction are integrated on a semiconductor substrate in a monolithic form, these outer inclined reflecting mirrors are positioned adjacent to each other, and also are arranged in such a manner that a distance between the adjoining horizontal-direction cavities becomes longer while being located apart from said outer inclined reflecting mirrors.
摘要翻译： 在半导体激光器阵列中，具有水平方向腔的半导体激光器元件和能够反射沿着特定方向从半导体激光元件投影的激光的多个外倾斜反射镜以整体形式集成在半导体衬底上， 这些外倾斜反射镜彼此相邻地定位，并且还布置成使得相邻的水平方向空腔之间的距离变得更长，同时与所述外倾斜反射镜分开。
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公开(公告)号：US4660527A
公开(公告)日：1987-04-28
申请号：US871778
申请日：1986-06-09
CPC分类号： F01P3/02 , F01L1/0532 , F01L1/26 , F02F1/40 , F02F1/4214 , F02B1/04 , F02B2275/18 , F02F2001/245
摘要： A cylinder head construction for a combustion engine, which comprises a wall structure defining a cylinder head lower surface adapted to contact a mating surface of a cylinder block, and having an inwardly recessed wall defining a combustion chamber, an exhaust port defining wall open at one end at said inwardly recessed wall and at the opposite end in a cylinder head side wall, and adapted to be selectively opened and closed by two separate exhaust valves, wherein a pair of exhaust ports, one for each exhaust valve, are defined at least adjacent the exhaust valves, respectively, a coolant passage defined between the wall structure and the exhaust port defining wall, and a wall member extending between the exhaust port defining wall and the wall structure for deflecting a coolant in the coolant passage so as to flow into a space between the exhaust ports.
摘要翻译： 一种用于内燃机的气缸盖结构，其包括壁结构，其限定适于接触气缸体的配合表面的气缸盖下表面，并且具有限定燃烧室的向内凹入的壁，限定出一个开口的排气口 在气缸盖侧壁的所述向内凹入的壁处和相对端处终止，并且适于由两个分离的排气阀选择性地打开和关闭，其中一个排气口，每个排气门一个至少相邻 排气阀分别设置在壁结构和排气口限定壁之间的冷却剂通道，以及在排气口限定壁和壁结构之间延伸的壁构件，用于偏转冷却剂通道中的冷却剂以便流入 排气口之间的空间。
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公开(公告)号：US4538179A
公开(公告)日：1985-08-27
申请号：US493555
申请日：1983-05-11
申请人： Kimura Tsutomu , Hideo Nakayama , Yuichi Fuseda
发明人： Kimura Tsutomu , Hideo Nakayama , Yuichi Fuseda
摘要： Unsharp masking operations of original video signals are performed by a couple of processor systems (100, 200), which are interconnected in cascades logically to share the burden of the operations. One processor system (100) in the preceding stage executes a part of unsharp masking operations by accumulating the original video signals with respect to the pixels involved in an original image to transfer the resultant data together with the associated original video signals to the other processor system (200) in the subsequent stage. The other processor system (200) receives those data and proceeds the remaining operations required for the unsharp masking operations including averaging by simple or weighted addition. Those operations are executed with respect to all unsharp masks involved in the original image. Since the one processor system (100) shares the unsharp masking operations with the other processor system (200), the total operational speed is increased approximately twice as much as an image processing system composed of a single-processor system, giving rise to a real-time processing of unsharp masking of images.
摘要翻译： 原始视频信号的锐化掩蔽操作由几个处理器系统（100,200）执行，这些处理器系统在逻辑上以级联方式互连以分担操作的负担。 前一级的一个处理器系统（100）通过相对于原始图像中涉及的像素累积原始视频信号来执行一部分不清晰的掩蔽操作，以将结果数据与相关联的原始视频信号一起传送到另一个处理器系统 （200）。 另一个处理器系统（200）接收那些数据，并且进行用于非锐化掩蔽操作所需的剩余操作，包括通过简单或加权相加进行平均。 相对于原始图像中涉及的所有钝化掩模执行这些操作。 由于一个处理器系统（100）与其他处理器系统（200）共享不清晰的掩蔽操作，所以总的操作速度增加了大约是由单处理器系统组成的图像处理系统的两倍，从而产生真实的 时间处理图像的钝化掩蔽。
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