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公开(公告)号：US5477438A
公开(公告)日：1995-12-19
申请号：US31139
申请日：1993-03-12
申请人： Naotaro Nakata , Naofumi Aoki
发明人： Naotaro Nakata , Naofumi Aoki
CPC分类号： H01S5/4025
摘要： A light source unit of the present invention is provided with a plurality of semiconductor lasers each emitting one laser beam, a bar body to which the semiconductor lasers are attached so that p-n junctions planes of respective semiconductor lasers are arranged in the same direction, and a beam restricting plate where holes for passing a part of the beam from the semiconductor laser are formed so as to correspond to the semiconductor lasers. With this feature, a plurality of laser beams of uniform optical power can be emitted at predetermined spaces.
摘要翻译： 本发明的光源单元设置有多个半导体激光器，每个半导体激光器发射一个激光束，连接有半导体激光器的条形体，使得各个半导体激光器的pn结平面布置在相同的方向，并且 用于使来自半导体激光器的光束的一部分通过的孔的光束限制板形成为对应于半导体激光器。 利用该特征，可以在预定空间发射多个具有均匀光功率的激光束。
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公开(公告)号：US5463707A
公开(公告)日：1995-10-31
申请号：US295453
申请日：1994-08-24
申请人： Naotaro Nakata , Naofumi Aoki , Kenji Okada
发明人： Naotaro Nakata , Naofumi Aoki , Kenji Okada
CPC分类号： G02B6/4204 , G02B6/4227 , G02B6/4222
摘要： An optical fiber receptacle has a glass rod lens in its one end side and a front end of an optical fiber to be connected to the opposite end side of the receptcle is brought into physical contact with a spherical surface of the glass rod lens to thereby make the optical fiber optically couple with an optical element to be provided on the glass rod lens side, wherein a housing including a sleeve for insertion of the front end of the optical fiber therein is fixed to a lens holder for fixedly holding the glass rod lens by fusion so that the center of the sleeve and the center of the spherical surface of the glass rod lens are aligned.
摘要翻译： 光纤插座在其一端侧具有玻璃棒状透镜，并且与接收器的相对端侧连接的光纤的前端与玻璃棒状透镜的球面物理接触，从而形成 所述光纤与要设置在所述玻璃棒透镜侧的光学元件光学耦合，其中，包括用于将所述光纤的前端插入其中的套筒的壳体固定到透镜保持器，用于通过所述透镜保持器固定地保持所述玻璃棒透镜 使得套筒的中心和玻璃棒状透镜的球面的中心对齐。
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公开(公告)号：US5528407A
公开(公告)日：1996-06-18
申请号：US363278
申请日：1994-12-22
申请人： Naotaro Nakata , Haruo Tanaka , Naofumi Aoki , Kenji Okada
发明人： Naotaro Nakata , Haruo Tanaka , Naofumi Aoki , Kenji Okada
CPC分类号： H04B10/40 , G02B6/4206 , G02B6/4246 , G02B6/32 , G02B6/327 , G02B6/3877 , G02B6/4207 , G02B6/4214
摘要： A transceiver module for optical communication includes a light-emitting element, a light-receiving element and a rod lens. Light from the light-emitting element is condensed onto the top end of the rod lens. A ferrule of an optical fiber is brought into physical contact with the top end surface of the rod lens so as to couple the light-emitting element and the light-receiving element with the optical fiber. The rod lens is held by a support supported by a spring member on a housing, and the outer diameter of the rod lens is formed so as to be substantially equal to the outer diameter of the ferrule. An opening portion is provided in the housing so that the top end of the ferrule of the optical fiber is slidably fitted into one end of a sleeve, the other end of which is slidably fitted onto the outer circumference of the rod lens. Also, a transceiver module includes a light-emitting element for emitting transmission signal light, a coupling lens for connecting the transmission signal light emitted from the light-emitting element to a light transmission path, and a light-receiving element for receiving detection signal light from the light transmission path, in which the transmission signal light emitted from the light-emitting element is reflected on a surface of the light-receiving element and connected to the light transmission path through the coupling lens; and the detection signal light from the light transmission path is received by the light-receiving element.
摘要翻译： 用于光通信的收发器模块包括发光元件，光接收元件和棒状透镜。 来自发光元件的光会聚到棒状透镜的顶端。 将光纤的套圈与棒状透镜的顶端面物理接触，以将光发射元件和光接收元件与光纤耦合。 棒状透镜被由壳体上的弹簧构件支撑的支撑件保持，并且棒状透镜的外径形成为基本上等于套圈的外径。 开口部设置在壳体中，使得光纤的套圈的顶端可滑动地嵌合在套筒的一端中，套筒的另一端可滑动地装配到杆状透镜的外圆周上。 此外，收发器模块包括用于发射透射信号光的发光元件，用于将从发光元件发射的发射信号的光连接到光传输路径的耦合透镜，以及用于接收检测信号光的光接收元件 从光发射元件发射的发射信号光在光接收元件的表面上被反射并通过耦合透镜连接到光传输路径的光传输路径; 并且来自光传输路径的检测信号光被光接收元件接收。
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公开(公告)号：US06970486B2
公开(公告)日：2005-11-29
申请号：US09858508
申请日：2001-05-17
申请人： Naotaro Nakata
发明人： Naotaro Nakata
CPC分类号： H01S5/02248 , H01S5/02244 , H01S5/0683
摘要： A sub-mount (7) provided with a laser chip (8) and a light receiving element (5) for monitoring is bonded to a die pad portion (2a) of a first lead (2). An electrode of the laser chip and an electrode of the light receiving element are electrically connected to second leads (3, 4) by wires such as metallic wires, not shown, respectively. A resin frame (6) is provided to cover sides and a rear surface side of the sub-mount except for an emission surface side of the laser chip and to integrally hold one end portion sides of the first and second leads. An antireflection unit (9) for preventing light from being reflected on the light receiving element is formed on a portion of the resin frame opposite to the rear end face of the laser chip. As a result, it is possible to obtain a mold type semiconductor laser capable of constantly detect accurate laser chip output and capable of forming an accurate optical output control circuit.
摘要翻译： 设置有用于监测的激光芯片（8）和受光元件（5）的子安装座（7）被接合到第一引线（2）的管芯焊盘部分（2a）。 激光芯片的电极和受光元件的电极分别通过未示出的金属线等电线电连接到第二引线（3,4）。 树脂框架（6）设置成覆盖激光芯片的发射表面侧以外的副安装座的侧面和后表面侧，并且一体地保持第一和第二引线的一个端部侧面。 在树脂框架的与激光芯片的后端面相对的部分上形成有用于防止在受光元件上反射光的防反射单元（9）。 结果，可以获得能够不断地检测准确的激光芯片输出并且能够形成精确的光输出控制电路的模具型半导体激光器。
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公开(公告)号：US5339373A
公开(公告)日：1994-08-16
申请号：US120420
申请日：1993-09-14
申请人： Haruo Tanaka , Naotaro Nakata
发明人： Haruo Tanaka , Naotaro Nakata
CPC分类号： G02B6/4215 , G02B6/29367
摘要： An optical branching and coupling device is provided in which the loss of light in receiving and in transmission is substantially reduced while at the same time the wavelength-branching characteristic is remarkably improved. The optical branching and coupling device connected to a first optical fiber for inputting a first ray of light and a second ray of light of which respective wavelengths are different from each other and for outputting the first ray and to a second optical fiber for outputting the second ray, and having therein a light-emitting element for emitting the first ray and a light-receiving element for receiving the first ray, the optical branching and coupling device including a first filter for receiving the two rays input from the first optical fiber and a ray of light emitted from the light-emitting element, and a second filter for receiving the rays from the first filter and sending them to the second optical fiber and to the light-receiving element, wherein the first filter is formed, on its front side, with a first filter film adapted to substantially transmit the first ray and to substantially reflect the second ray and, on its back side, with a mirror film adapted to transmit a portion of each of the rays and to reflect the rest thereof; and wherein the second filter is formed, on its front side, with a second filter film adapted to substantially transmit the first ray and to substantially reflect the second ray and, on its back side, with an antireflective film adapted to substantially transmit the first ray.
摘要翻译： 提供了一种光分支和耦合装置，其中接收和传输中的光的损耗大大降低，同时波长分支特性显着提高。 连接到用于输入第一光线的第一光纤的光分支和耦合装置和各波长彼此不同并用于输出第一光线的第二光线和用于输出第二光线的第二光纤 并且其中具有用于发射第一光线的发光元件和用于接收第一光线的光接收元件，所述光分支和耦合装置包括用于接收从第一光纤输入的两条光线的第一滤光器和 从发光元件发出的光线;以及第二滤光器，用于接收来自第一滤光器的光线并将它们发送到第二光纤和光接收元件，其中形成第一滤光器，在其正面 具有适于基本上透射第一光线并且基本上反射第二光线的第一滤光膜，并且在其背面上具有适于透射端口的镜膜 在每个射线上，并反射其余部分; 并且其中所述第二过滤器在其前侧具有适于基本上透射所述第一射线并基本上反射所述第二射线的第二过滤膜，并且在其背侧上形成适于基本上透射所述第一射线的抗反射膜 。
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公开(公告)号：US06548803B1
公开(公告)日：2003-04-15
申请号：US09684955
申请日：2000-10-05
申请人： Naotaro Nakata , Hironori Endo
发明人： Naotaro Nakata , Hironori Endo
IPC分类号： H01J314
摘要： A light receiving unit comprises a condenser lens (11) which converges laser beam and a light receiving unit (12) which receives the incident beam converged by the condenser lens. The light receiving element is formed, such that the light receiving portion thereof has an area of 2 mm2 or less and disposed at the side of the condenser lens than the point P where the beam is converged by the condenser lens and at the position more apart from the condenser lens than the position F of the focal distance of the condenser lens. As a consequence, a light receiving unit which detects the laser beam can be obtained, the light receiving unit enabling it possible to always receive the laser beam regardless of a little eccentricity of a laser source while the speed of response is raised.
摘要翻译： 光接收单元包括会聚激光束的聚光透镜（11）和接收由聚光透镜会聚的入射光束的光接收单元（12）。 光接收元件形成为使得其光接收部分具有2mm2或更小的面积，并且设置在聚光透镜的侧面，而不是聚焦透镜的光束会聚在点P处，并且位于更分开的位置 来自聚光透镜的聚焦透镜的焦距位置F. 结果，可以获得检测激光束的光接收单元，光接收单元能够始终接收激光束，而不管激光源的偏心程度如何，同时响应速度提高。
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公开(公告)号：US5671305A
公开(公告)日：1997-09-23
申请号：US400514
申请日：1995-03-07
申请人： Haruo Tanaka , Naotaro Nakata
发明人： Haruo Tanaka , Naotaro Nakata
CPC分类号： G02B6/32 , G02B6/4246 , G02B6/4248
摘要： Disclosed is an optical branching and coupling device of high quality which is prevented from malfunction, corrosion and deterioration due to condensation on optical components incorporated therein by virtue of perfect sealing. The optical branching and coupling device including a housing provided with an aperture, optical instruments, associated with the housing, for branching, coupling, transmitting and receiving optical information input to the device, and an aspherical lens inserted into the aperture and fixed thereto by hermetic sealing with a glass material, the aspherical lens being adapted to connect at an end face thereof with at least one optical fiber.
摘要翻译： 公开了一种高质量的光分支和耦合装置，通过完美的密封，防止由于在其中组装的光学部件上的冷凝而发生故障，腐蚀和劣化。 光学分支和耦合装置包括设置有孔的壳体，与壳体相关联的光学仪器，用于分支，耦合，发射和接收输入到装置的光学信息，以及插入孔中的非球面透镜，并通过气密固定 用玻璃材料密封，非球面透镜适于在其端面处与至少一根光纤连接。
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8.发明授权
公开(公告)号：US5412509A
公开(公告)日：1995-05-02
申请号：US93927
申请日：1993-07-20
申请人： Naotaro Nakata , Kazutoshi Yamazaki
发明人： Naotaro Nakata , Kazutoshi Yamazaki
CPC分类号： G02B7/021
摘要： A semiconductor laser is inserted into a first hole of a fixing member. An optical system including a cylindrical lens barrel and a lens attached inside the lens barrel is inserted into a second hole in order to direct a light beam emitted from the semiconductor laser to a predetermined position. The first and second holes are formed to be opposite to each other and are arranged on the same axis. The semiconductor laser and the optical system inserted into the first and second holes, respectively, so as to be partly exposed are fixed by laser welding at entrances of the first and second holes. The fixing member is provided with a third hole vertically penetrating the second hole. An adhesive is filled into the third hole. Further, an adhesive is applied onto laser welding points at the entrance of the first hole.
摘要翻译： 将半导体激光器插入到固定构件的第一孔中。 将包括柱面透镜镜筒和安装在透镜镜筒内的透镜的光学系统插入到第二孔中，以将从半导体激光器发射的光束引导到预定位置。 第一和第二孔形成为彼此相对并且布置在同一轴线上。 通过在第一孔和第二孔的入口处的激光焊接固定分别插入第一孔和第二孔中以便部分暴露的半导体激光器和光学系统。 固定构件设有垂直贯穿第二孔的第三孔。 粘合剂填充到第三孔中。 此外，将粘合剂施加到第一孔的入口处的激光焊接点上。
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公开(公告)号：US5052005A
公开(公告)日：1991-09-24
申请号：US452418
申请日：1989-12-19
申请人： Haruo Tanaka , Naotaro Nakata
发明人： Haruo Tanaka , Naotaro Nakata
IPC分类号： G11B7/125 , G11B7/22 , H01L31/167 , H01S5/00 , H01S5/022
CPC分类号： G11B7/127 , H01L31/167 , H01L33/00 , H01L2224/45124 , H01L2224/48091 , H01S5/02248 , H01S5/02276 , H01S5/0683
摘要： In an optical pick-up arranged to detect information recorded on an optical disk by causing laser light projected onto and reflected from a signal surface of the optical disk disposed within an optical system, to be received by a light receiving element provided in the optical system, a method of mounting onto the optical pick-up is provided with a laser diode unit which includes a metallic substrate, a laser diode, a photo-diode, a current feeding lead portion to the laser diode and a current output lead portion from the photo-diode, respectively disposed at one side face in the direction of thickness of the metallic substrate for emitting the laser light. The laser diode unit is positioned and fixed at a predetermined position of the optical system through a mounting member. The mounting method of the laser diode unit includes the steps of setting the other side face in the direction of thickness of the substrate and the mounting member in a desired positional relation for contact with each other. As a result, a plurality of contact places therebetween may be simultaneously welded by laser light for combining the laser diode unit and the optical pick-up into one unit.
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公开(公告)号：US06335809B1
公开(公告)日：2002-01-01
申请号：US09647851
申请日：2000-10-03
申请人： Naotaro Nakata
发明人： Naotaro Nakata
IPC分类号： G02B532
CPC分类号： G11B7/1353 , G02B5/32 , G11B7/094 , G11B7/131
摘要： An optical pickup includes a hologram unit. The hologram unit includes a hologram pattern formed circular by dividing into two and then joining together first and second patterns formed in the entire circular region. The first pattern is designed to minimize a sub-beam spot on a light-receiving device based on an optical path length and wavelength when a +1-order sub-beam is taken as a light source. The second pattern is designed to minimize the sub-beam spot on the light-receiving device based on an optical path length and wavelength when a −1-order sub-beam is taken as a light source.
摘要翻译： 光拾取器包括全息图单元。 全息图单元包括通过分成两部分形成圆形的全息图图形，然后将形成在整个圆形区域中的第一和第二图案接合在一起。 第一图案被设计成当+ 1阶子束被用作光源时，基于光路长度和波长来最小化光接收装置上的子光束点。 第二图案被设计为当以-1级子光束作为光源时，基于光路长度和波长使光接收装置上的子光束点最小化。
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