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    • 32. 发明授权
    • Multiquantum-well semiconductor laser
    • 多量子阱半导体激光器
    • US5737353A
    • 1998-04-07
    • US783899
    • 1997-01-16
    • Yoshihiro Sasaki
    • Yoshihiro Sasaki
    • H01S5/34H01S3/18
    • B82Y20/00H01S5/34H01S5/3407H01S5/3416
    • A multiquantum-well semiconductor laser having a long wavelength, for use in optical communication systems, comprises an active region including a plurality of quantum-well layers each made of InGaAs or InGaAsP, and a plurality of barrier laminates each made of InGaAsP having a bandgap wider than that of the quantum-well layers. Each barrier laminate includes three barrier layers of different compositions of InGaAsP having different bandgaps. Each barrier laminate has a thickness such that the wave functions of carriers in adjacent quantum-well layers do not overlap each other, while carriers supplied to the active region can be effectively injected into the quantum-well layers, thereby obtaining a low threshold current and a high slope efficiency.
    • 具有长波长的多量子阱半导体激光器,用于光通信系统中,包括有源区,其包括由InGaAs或InGaAsP构成的多个量子阱层,以及多个由InGaAsP制成的阻挡层叠体,其具有带隙 比量子阱层宽。 每个阻挡层压板包括具有不同带隙的不同组成的InGaAsP的三个阻挡层。 每个阻挡层压板的厚度使相邻量子阱层中的载流子的波函数彼此不重叠,而提供给有源区的载流子能够被有效地注入到量子阱层中,从而获得低阈值电流, 高斜率效率。
    • 34. 发明授权
    • Vehicle position lamp and headlight
    • 车位灯和头灯
    • US08864353B2
    • 2014-10-21
    • US13358500
    • 2012-01-25
    • Yoshihiro SasakiHideki Toyoyama
    • Yoshihiro SasakiHideki Toyoyama
    • F21V5/00F21S8/10
    • F21S48/215F21S43/14F21S43/26F21S43/27
    • A vehicle position lamp can include a plurality of circuit boards each mounting an LED. The vehicle position lamp can also include a first inner lens having a plurality of optical plates and at least one connecting plate connecting between the adjacent optical plates and a second inner lens. An inner surface of each of the optical plates can be located adjacent the respective one of the circuit boards so that an optical axis of a diffusing lens of each of the optical plates corresponds to a substantially optical axis of each of the LEDs. The second inner lens can be located adjacent the first inner lens that can be formed in various slender curved shapes. Thus, the disclosed subject matter can provide vehicle position lamps having a high visibility that are formed in various slender curved shapes such that match headlights, which fit both front corners of a vehicle.
    • 车辆位置灯可以包括多个电路板,每个电路板安装LED。 车辆位置灯还可以包括具有多个光学板的第一内部透镜和连接在相邻的光学板和第二内部透镜之间的至少一个连接板。 每个光学板的内表面可以位于相应的电路板之间,使得每个光学板的漫射透镜的光轴对应于每个LED的基本上的光轴。 第二内透镜可以位于可以形成为各种细长弯曲形状的第一内透镜附近。 因此,所公开的主题可以提供具有高可见度的车辆位置灯,其以各种细长的弯曲形状形成,使得匹配前灯适合车辆的前角。
    • 36. 发明申请
    • Ellipsometer and Ellipsometry
    • 椭偏仪和椭偏仪
    • US20070268490A1
    • 2007-11-22
    • US10572285
    • 2004-01-23
    • Shojiro KawakamiTakashi SatoNaoki HashimotoYoshihiro Sasaki
    • Shojiro KawakamiTakashi SatoNaoki HashimotoYoshihiro Sasaki
    • G01J4/00G02B5/30G06F19/00
    • G01N21/211G01J4/04
    • A small and high-speed polarization analysis device and ellipsometer having no driving section are provided by overlapping one polarizer array rendered by arranging a plurality of polarizer regions of mutually different optical axis directions in the form of stripes and one wavelength plate array rendered by arranging a plurality of wavelength plate regions of fixed retardation and mutually different optical axis directions in the form of stripes so that the respective stripes of the plurality of polarizer regions and of the plurality of wavelength plate regions intersect one another and by disposing a light-receiving element array so that the intensities of light that has passed through the matrix-like intersection parts can be individually measured. As a method of analyzing a two-dimensional intensity distribution pattern that is observed by the light-receiving element array of the polarization analysis device, either one of (or both of) the algorithms of a method that determines incident polarized waves by mathematically fitting pattern shapes or performing database matching or a method that performs a Fourier transform on pattern shapes and determines incident polarized waves from the frequency components is (are) used. Furthermore, if necessary, more accurate polarization analysis is also possible by adopting a signal processing method that removes signals from light-receiving element regions that receive unnecessary scattered light and diffracted light.
    • 通过重叠一个偏振器阵列来提供不具有驱动部分的小型和高速偏振分析装置和椭偏仪,通过布置条纹形式的多个彼此不同的光轴方向的偏振器区域和通过布置一个 多个具有固定延迟的波长板区域和条纹形式的相互不同的光轴方向,使得多个偏振器区域和多个波长板区域中的各个条纹彼此相交,并且通过设置光接收元件阵列 能够分别测定通过矩阵状交叉部的光的强度。 作为分析由偏振分析装置的受光元件阵列观察到的二维强度分布图案的方法,可以通过数学拟合图案来确定入射极化波的方法的一种(或两者) 使用形状或执行数据库匹配或者对图案形状进行傅立叶变换并且从频率分量确定入射偏振波的方法。 此外,如果需要,通过采用从接收不必要的散射光和衍射光的受光元件区域去除信号的信号处理方法,也可以进行更精确的偏振分析。