Cold-cathode driver and liquid crystal display
    42.
    发明授权
    Cold-cathode driver and liquid crystal display 失效
    冷阴极驱动器和液晶显示器

    公开(公告)号:US06903517B2

    公开(公告)日:2005-06-07

    申请号:US10362943

    申请日:2002-06-26

    摘要: A cold cathode tube driving device using a piezoelectric transformer in which an output voltage varies depending on a frequency of an input voltage, as a booster transformer for driving a cold cathode tube, includes: a frequency dividing means which generates a driving pulse of an average frequency corresponding to frequency data outputted from a frequency setting means at a distribution cycle which is a driving pulse N cyclic period; a controller which controls a control cycle so as to perform the same driving for predetermined number of times A (A≧2) at the average frequency; and a burst pulse generating means which generates a pulse having a duty width in accordance with a dimming level externally applied thereto and having a frequency outputted from the controller.A control cycle is A times (natural number) the distribution cycle and the driving is performed A times at the same average frequency, whereby a digital driving system using the frequency distribution of the driving pulse is achieved. Consequently, a space for the driving circuit can be saved and cost can be reduced. Further, a frequency distribution system is adopted, thereby obtaining frequency resolution required for satisfactory dimming performance and lighting performance. Moreover, a burst dimming system is adopted, thereby suppressing brightness flicker seen in a tube current control system. Additionally, there is no electric power loss seen in a system in which a power source is turned on or off and further a shield circuit is unnecessary because of a system in which the driving pulse is turned on or off. In particular, the control cycle is A times the distribution cycle and the burst dimming is performed in which the driving is executed A times at the same average frequency, whereby the brightness flicker can be prevented by controlling the tube current to be constant with high dimming resolution assured.

    摘要翻译: 一种使用压电变压器的冷阴极管驱动装置,其中输出电压根据输入电压的频率而变化,作为用于驱动冷阴极管的升压变压器,包括:分频装置,其产生平均的驱动脉冲 频率对应于从作为驱动脉冲N周期的分配周期的频率设定单元输出的频率数据; 控制器,其以平均频率控制控制周期以执行相同的驱动预定次数A(A> = 2); 以及脉冲串脉冲发生装置,其产生具有根据外部施加到其上的调光电平的占空比宽度并具有从控制器输出的频率的脉冲。 控制周期是A次(自然数)的分配周期,并且以相同的平均频率进行A次驱动,由此实现使用驱动脉冲的频率分布的数字驱动系统。 因此,可以节省驱动电路的空间并降低成本。 此外,采用频率分配系统,从而获得令人满意的调光性能和照明性能所需的频率分辨率。 此外,采用脉冲调光系统,从而抑制管电流控制系统中看到的亮度闪烁。 此外,由于驱动脉冲导通或关断的系统,在电源接通或关断的系统中看不到电力损耗,并且还需要屏蔽电路。 特别地,控制周期为分配周期的A倍,并且进行脉冲调制,其中以相同的平均频率执行驱动A次,从而可以通过在高调光下控制管电流恒定来防止亮度闪烁 分辨率有保证。

    Semiconductor laser device and optical pickup device using the same
    43.
    发明授权
    Semiconductor laser device and optical pickup device using the same 失效
    半导体激光器件和使用其的光学拾取器件

    公开(公告)号:US06747939B2

    公开(公告)日:2004-06-08

    申请号:US09793675

    申请日:2001-02-26

    IPC分类号: G11B700

    CPC分类号: G11B7/123

    摘要: A semiconductor laser device is provided which can carry out recording and reproduction with respect to optical disks with different formats. In this semiconductor laser device, a receiving/emitting optics integrated substrate, in which two semiconductor laser elements with different emission wavelengths and a plurality of receiving optics are integrated, is disposed in a case and is sealed with a hologram element. A composite prism is placed on the hologram element. The distances, when measured in air, from the two semiconductor laser elements to a focusing means, for example, a collimator lens are set to be substantially equal. Thus, a small and inexpensive semiconductor laser device can be obtained. In addition, a single collimator lens can be employed, and thus the optical configuration is facilitated.

    摘要翻译: 提供一种能够对不同格式的光盘执行记录和再现的半导体激光装置。 在该半导体激光器件中,将具有不同发射波长的两个半导体激光元件和多个接收光学元件集成在一起的接收/发射光学器件集成基板设置在壳体中并用全息元件密封。 复合棱镜放置在全息元件上。 在空气中测量时,从两个半导体激光元件到聚焦装置(例如准直透镜)的距离被设定为基本相等。 因此,可以获得小而便宜的半导体激光器件。 另外,可以采用单个准直透镜,因此有助于光学结构。

    Optical electronic apparatus and method for producing the same
    44.
    发明授权
    Optical electronic apparatus and method for producing the same 失效
    光电子装置及其制造方法

    公开(公告)号:US06680491B2

    公开(公告)日:2004-01-20

    申请号:US10193173

    申请日:2002-07-12

    IPC分类号: H01L3300

    摘要: An optoelectronic apparatus includes an optoelectronic device, a mounting portion, a frame member surrounding a periphery of the mounting portion, and an optical component. The optical component is placed on an optical component placement portion. The frame member includes a pair of first side walls and a pair of second side walls. Each of the pair of second side walls has a recessed portion and a protruded portion. The optical component is disposed between the protruded portions, and is fixed with an adhesive filled in the recessed portions.

    摘要翻译: 光电子器件包括光电子器件,安装部分,围绕安装部分周围的框架部件和光学部件。 光学部件被放置在光学部件放置部分上。 框架构件包括一对第一侧壁和一对第二侧壁。 一对第二侧壁中的每一个具有凹部和突出部。 光学部件设置在突出部之间,并且用填充在凹部中的粘合剂固定。

    Semiconductor laser device
    45.
    发明授权
    Semiconductor laser device 失效
    半导体激光器件

    公开(公告)号:US06614743B1

    公开(公告)日:2003-09-02

    申请号:US09710995

    申请日:2000-11-09

    IPC分类号: G11B700

    摘要: A semiconductor laser device includes a semiconductor laser element, a light beam branching element for branching a light beam emitted from the semiconductor laser element and reflected by an optical recording medium into a plurality of light beams, a light beam reflector for reflecting the light beam branched by the light beam branching element, and a photodetector portion for detecting the light beam reflected by the light beam reflector. The light beam branching element and the photodetector portion are formed on the same substrate. The miniature semiconductor laser device can be assembled without complicated position adjustment and has less deterioration of characteristics arising from misregistration during and after assembly.

    摘要翻译: 半导体激光器件包括半导体激光元件,用于将从半导体激光元件发出的光束分支并由光学记录介质反射成多个光束的光束分支元件,用于反射光束分支的光束反射器 由光束分支元件和用于检测由光束反射器反射的光束的光电检测器部分。 光束分支元件和光电检测器部分形成在相同的基板上。 微型半导体激光装置可以在没有复杂的位置调整的情况下进行组装,并且在组装期间和组装之后由于配准不良引起的特性劣化较少。

    Optical-component-integrated optical pickup
    46.
    发明授权
    Optical-component-integrated optical pickup 失效
    光学元件集成光学拾取器

    公开(公告)号:US06587283B2

    公开(公告)日:2003-07-01

    申请号:US09820958

    申请日:2001-03-29

    IPC分类号: G02B702

    摘要: An optical pickup is equipped with: an enclosure which contains an optical system including a semiconductor laser and an objective lens; a fixed member; and an elastic supporting member which has conductivity and movably supports the enclosure. A plurality of pairs of driving coils are each positioned in the enclosure so as to be symmetrical with respect to an optical axis of a laser beam. The plurality of pairs of driving coils generate magnetic forces with a plurality of magnets or the like, to drive the enclosure in a focusing direction and a tracking direction.

    摘要翻译: 光拾取器配备有:包含包括半导体激光器和物镜的光学系统的外壳; 固定会员 以及具有导电性并可移动地支撑外壳的弹性支撑构件。 多对驱动线圈分别位于外壳中,以相对于激光束的光轴对称。 多对驱动线圈产生具有多个磁体等的磁力,以沿聚焦方向和跟踪方向驱动外壳。

    Semiconductor laser apparatus
    48.
    发明授权
    Semiconductor laser apparatus 失效
    半导体激光装置

    公开(公告)号:US6084895A

    公开(公告)日:2000-07-04

    申请号:US904304

    申请日:1997-07-31

    摘要: A semiconductor laser element which is composed of a compound semiconductor consisting of GaAs or the like, a silicon laser mount which is disposed beneath the semiconductor laser element so as to position the element, and on which an electrode layer as an electrode for the semiconductor laser element is formed, a heat sink which is disposed beneath the laser mount so as to dissipate, through the laser mount, the heat generated by the semiconductor laser element are mutually secured through hot contact bonding. The laser mount has a concave portion on the side opposite to its main surface on which the semiconductor layer element is secured, and the concave portion contains a heat dissipating body which is integrated thereinto and is made of copper having higher thermal conductivity than silicon.

    摘要翻译: 由由GaAs等构成的化合物半导体构成的半导体激光元件,设置在半导体激光元件下方的元件的硅激光器座,其上形成作为半导体激光器的电极的电极层 元件形成,散热器通过热接触粘合相互固定,该散热器设置在激光安装座的下面,以便通过激光器安装件散发由半导体激光元件产生的热量。 激光器安装件在其主表面的与半导体层元件固定的一侧相对的一侧具有凹部,并且凹部包含集成在其中并由具有比硅更高的导热性的铜制成的散热体。

    Semiconductor laser device
    49.
    发明授权
    Semiconductor laser device 失效
    半导体激光器件

    公开(公告)号:US5793785A

    公开(公告)日:1998-08-11

    申请号:US509695

    申请日:1995-07-31

    摘要: Radiating light from a semiconductor laser element is radiated in a direction normal to the surface of a photodetector substrate. The semiconductor laser element and photodetector are disposed on the same plane. Specifically, a reflecting mirror surface formed of a slanting surface of (111) lattice plane having a ridge line of direction is disposed on a silicon substrate of (100) lattice plane having an off-angle of 4.degree. to 14.degree. about an axis of direction or on a silicon substrate of (511) lattice plane having an off-angle of 1.degree. to 11.degree. about an axis of direction. The semiconductor laser chip is disposed at a position opposing to the reflecting mirror surface.

    摘要翻译: 来自半导体激光元件的散射光沿着与光检测器基板的表面垂直的方向辐射。 半导体激光元件和光电检测器设置在同一平面上。 具体地说,在具有<110>方向的棱线的(111)晶格面倾斜表面形成的反射镜表面设置在离开角度为4°至14°的(100)晶格面的硅衬底上 (511)晶格面的硅基板上,沿着<110>方向的轴线偏离为1°至11°。 半导体激光芯片设置在与反射镜表面相对的位置。