Backlighting of nematic curvilinear aligned phase liquid crystal display
panels
    41.
    发明授权
    Backlighting of nematic curvilinear aligned phase liquid crystal display panels 失效
    向列曲线对准相液晶显示面板的背光

    公开(公告)号:US5283563A

    公开(公告)日:1994-02-01

    申请号:US496395

    申请日:1990-03-20

    CPC classification number: G02F1/133615 G02F1/13476

    Abstract: A liquid crystal display (LCD) is provided with a source of backlighting which augments reflected incident light to provide increased contrast. A liquid crystal cell which does not contain dye, but becomes clear when a field is applied, is sandwiched in back of a liquid crystal cell with a dye and electrically connected so that when the front liquid crystal cell is turned ON to make selected portions of it transparent, the back liquid crystal cell is OFF so that corresponding portions of it are highly reflecting. No voltage is allowed to be applied across nonselected portions of the front liquid crystal and a voltage is applied across corresponding nonselected portions of the back liquid crystal making the nonselected portions of the back liquid crystal clear, producing a display of high contrast. Sandwiched to the rear of the back liquid crystal cell is a clear plastic wedge which is edge lighted. The edge lighted wedge only appears bright in the areas where the voltage on the back liquid crystal cell is OFF or not applied thereto.

    Abstract translation: 液晶显示器(LCD)设置有背光源,其增加反射入射光以提供增强的对比度。 不含染料而在场施加时变得清晰的液晶单元被夹在具有染料的液晶单元的背面并电连接,使得当前面液晶单元接通时,使选定部分 它是透明的,背面液晶单元是关闭的,使得它的相应部分是高度反射的。 不允许在前液晶的非选择部分施加电压,并且在后液晶的相应的非选择部分上施加电压,使背液晶的非选择部分清晰,产生高对比度的显示。 三明治到后面的液晶单元的后面是一个清晰的塑料楔形物,其边缘点亮。 在背面液晶单元上的电压关闭或未施加到其上的区域中,边缘点亮的楔块仅显示亮。

    Acoustic resonance operation of xenon-metal halide lamps
    43.
    发明授权
    Acoustic resonance operation of xenon-metal halide lamps 失效
    氙金属卤化物灯的声共振操作

    公开(公告)号:US5121034A

    公开(公告)日:1992-06-09

    申请号:US579129

    申请日:1990-09-06

    CPC classification number: H05B41/2928 Y02B20/208 Y10S315/07

    Abstract: Miniature high pressure arc lamps containing a substantial pressure of xenon, in addition to metal halide and mercury, can provide instant light at turn-on and are suitable for automotive headlamps. The high pressure of xenon aggravates convection which causes arc bowing and overheating of the envelope above the arc. By operating the lamp at high frequency within selected bands, acoustic modes are excited in the fill which straighten the arc and make the envelope more isothermal. Frequency modulation of the input can be used to broaden the band selected for acoustic operation and relax the tolerance on arc tube and circuit parameters needed for a match. Acoustic operation may also be used to effect physical displacement of the arc for beam switching.

    Abstract translation: 除了金属卤化物和汞之外,含有大量氙气的微型高压电弧灯可以在开启时提供瞬间光,适用于汽车前照灯。 氙气的高压加剧对流,导致电弧弯曲和电弧上方的信封过热。 通过在所选频带内高频率地操作灯泡,在填充物中激发声学模式,使电弧拉直,并使信封更加等温。 输入的频率调制可以用于扩大选择用于声学操作的频带,并放宽电弧管的公差和匹配所需的电路参数。 还可以使用声学操作来实现用于光束切换的电弧的物理位移。

    COMPACT LED LIGHT ENGINE WITH REFLECTOR CUPS AND HIGHLY DIRECTIONAL LAMPS USING SAME
    44.
    发明申请
    COMPACT LED LIGHT ENGINE WITH REFLECTOR CUPS AND HIGHLY DIRECTIONAL LAMPS USING SAME 有权
    具有反射器CUPS的紧凑型LED发光体和使用相同的高定向光束

    公开(公告)号:US20120044682A1

    公开(公告)日:2012-02-23

    申请号:US12981846

    申请日:2010-12-30

    Abstract: A light engine comprises a plurality of light emitting diode (LED) devices arranged in a plane and a corresponding plurality of reflector cups wherein each LED device is disposed in a corresponding reflector cup and wherein the light engine does not include either a diffuser or a light mixing cavity. A directional lamp comprises the aforesaid light engine and an imaging lens arranged to generate an image of the light engine at about infinity. The directional lamp may further include a collecting reflector (for example, a conical, parabolic, or compound parabolic reflector) extending between a relatively narrower entrance aperture at which the light engine is disposed and a relatively wider exit aperture at which the imaging lens is disposed. The imaging lens may be arranged to generate a defocused image of the light engine at about infinity to soften the beam edge.

    Abstract translation: 光引擎包括布置在平面中的多个发光二极管(LED)器件和相应的多个反射杯,其中每个LED器件设置在相应的反射杯中,并且其中光引擎不包括漫射器或光 混合腔。 定向灯包括前述的光引擎和成像透镜,被配置为在大约无穷远地产生光引擎的图像。 定向灯还可以包括在配置光引擎的相对较窄的入口孔之间延伸的收集反射器(例如,圆锥形,抛物线形或复合抛物面反射器)和设置成像透镜的相对较宽的出射孔 。 成像透镜可以被布置成在大约无穷远处产生光引擎的散焦图像以软化光束边缘。

    Vehicle headlamp comprising a metal-halide discharge lamp including an
inner envelope and a surrounding shroud
    50.
    发明授权
    Vehicle headlamp comprising a metal-halide discharge lamp including an inner envelope and a surrounding shroud 失效
    车辆前照灯包括包括内封套和周围护罩的金属卤化物放电灯

    公开(公告)号:US5253153A

    公开(公告)日:1993-10-12

    申请号:US945543

    申请日:1992-09-16

    CPC classification number: H01J61/34 F21S48/1186

    Abstract: This headlamp comprises a reflector and a discharge lamp comprising an inner envelope having a longitudinal axis coinciding with the optical axis of the reflector. The inner envelope includes a bulbous portion, a front leg extending along the optical axis from the bulbous portion toward the front of the headlamp, and a back leg extending along the optical axis from the bulbous portion toward the reflector. The discharge lamp further comprises a tubular shroud comprising a first hollow portion surrounding the front leg of the inner envelope, a second hollow portion surrounding the back leg of the inner envelope, and a bulbous portion between the two hollow portions. The front leg is provided with a large-diameter integral enlargement (referred to herein as a "large-diameter maria"), and the shroud is joined to the front leg by a maria seal located at the outer periphery of this maria. The shroud is joined to the back leg of the inner envelope by a low-profile seal of substantially smaller diameter than the large-diameter maria seal located much closer to the longitudinal axis of the inner envelope than is the large-diameter maria seal.The bulbous portion of the shroud has (i) a back zone facing the reflector of generally ellipsoidal configuration and (ii) a central axis upwardly offset by a small distance from the longitudinal axis of the inner envelope. This offset has been found to substantially increase the ratio of the seeing light to the glare light in the headlamp beam.

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