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    • 5. 发明授权
    • Optical beam scanning apparatus and image forming apparatus
    • 光束扫描装置和成像装置
    • US08139278B2
    • 2012-03-20
    • US12956255
    • 2010-11-30
    • Masao Yamaguchi
    • Masao Yamaguchi
    • G02B26/08
    • G02B27/0037G02B13/0005G02B26/126G02B27/0031G02B27/4211G02B27/4227
    • In an image forming apparatus provided with an optical beam scanning apparatus according to the invention, an optical beam scanning apparatus of an overillumination scanning optical system includes a semiconductor laser device as a light source, a pre-deflection optical system, a polygon mirror, and a post-deflection optical system, with a width of the luminous flux made incident on the polygon mirror being wider than a width of one reflecting surface forming the polygon mirror, wherein at least two sheets of flat plate for transmitting the luminous flux scanned by the polygon mirror are provided in the post-deflection optical system. In accordance with an image forming apparatus provided with an optical beam scanning apparatus according to the invention, not only a wave front aberration on a photoconductive drum can be suitably corrected, but suitable beam diameter and beam profile can be obtained on the photoconductive drum.
    • 在设置有根据本发明的光束扫描装置的图像形成装置中,超照明扫描光学系统的光束扫描装置包括作为光源的半导体激光装置,预偏转光学系统,多面镜和 具有入射在多面镜上的光束的宽度的偏转后光学系统比形成多面镜的一个反射面的宽度宽,其中,至少两张用于透射由多面镜扫描的光束的平板 多角镜设置在偏转后光学系统中。 根据具有根据本发明的光束扫描装置的图像形成装置,不仅可以适当地校正感光鼓上的波前像差,而且可以在感光鼓上获得合适的光束直径和光束轮廓。
    • 6. 发明申请
    • WIRELESS COMMUNICATION DEVICE AND METHOD FOR CONTROLLING WIRELESS COMMUNICATION DEVICE
    • 无线通信装置及无线通信装置的控制方法
    • US20110261797A1
    • 2011-10-27
    • US13094835
    • 2011-04-27
    • Masao Yamaguchi
    • Masao Yamaguchi
    • H04W4/02
    • H04W72/048H04W84/12H04W88/10
    • A wireless communication device functioning as a wireless LAN access point includes: a first wireless LAN interface; a communication control section configured to carry out, using a first wireless LAN interface, wireless communication with wireless LAN clients on a first frequency ; an external device interface for connection with an external device; and a communication updating section configured to, when an external device having a second wireless LAN interface has been connected to the external device interface, cause the communication control section to carry out, concurrently with the wireless communication with wireless LAN client(s) using the first wireless LAN interface on the first frequency, wireless communication using the second wireless LAN interface with wireless LAN client(s) on a second frequency.
    • 用作无线LAN接入点的无线通信设备包括:第一无线LAN接口; 通信控制部,被配置为使用第一无线LAN接口在第一频率上执行与无线LAN客户端的无线通信; 用于与外部设备连接的外部设备接口; 以及通信更新部,其被配置为当具有第二无线LAN接口的外部设备已经连接到所述外部设备接口时,使所述通信控制部与所述无线LAN客户端的无线通信同时执行 第一频率上的第一无线LAN接口,使用与第二频率的无线LAN客户端的第二无线LAN接口的无线通信。
    • 9. 发明申请
    • Light Flux Controlling Member, Light Emitting Apparatus, Surface Light Source Apparatus And Display Apparatus
    • 光通量控制部件,发光装置,表面光源装置及显示装置
    • US20110044053A1
    • 2011-02-24
    • US12861012
    • 2010-08-23
    • Masao Yamaguchi
    • Masao Yamaguchi
    • F21V7/00F21V11/00F21V5/00
    • G02B7/023G02B19/0014G02B19/0061
    • A light flux controlling member can prevent unevenness in the uniformity of brightness due to the glueing of leg parts. This light flux controlling member (100) has: a virtually annular flange (140) that projects outward of a radial direction of a third emission surface (110c) of a light controlling emission surface (110); and leg parts (150) of a round stick shape that are arranged within a range of area width L in a back surface (120) and on the reference optical axis side of the boundary between the flange (140) and the third emission surface (110c), and area width L is given according to the following equation. L=t×tan(+−β), where: t is the thickness of the flange (140) or the height from the back surface (120) to the outermost rim part (110d); α is an angle of incidence of a light (113) that is parallel to the reference optical axis and that is incident on the light controlling emission surface (110) in the outermost rim part (110d); and β is an angle of emission of a refraction light (115) that is generated when the light (113) parallel to the reference optical axis is incident on the light controlling emission surface (110) from the outermost rim part (110d), and that is emitted from the light controlling emission surface (110).
    • 光束控制构件可以防止由于腿部的粘合引起的亮度均匀性的不均匀。 该光束控制部件(100)具有从光控制射出面(110)的第三射出面(110c)的径向向外突出的实质上环状的凸缘(140)。 以及圆形棒状的腿部(150),其布置在后表面(120)中的面积宽度L的范围内,并且在凸缘(140)和第三发射表面(140)之间的边界的参考光轴侧上 110c),面积宽度L根据下式给出。 L = t×tan(+ - &bgr)),其中:t是凸缘(140)的厚度或从后表面(120)到最外边缘部分(110d)的高度; α是平行于参考光轴并且入射在最外边缘部分(110d)中的光控制发射表面(110)上的光(113)的入射角; 和&bgr 是当平行于参考光轴的光(113)从最外边缘部分(110d)入射到光控制发射表面(110)时产生的折射光(115)的发射角,即 从所述光控制发射面(110)射出。