公开(公告)号：US20090086508A1

公开(公告)日：2009-04-02

申请号：US11863167

申请日：2007-09-27

申请人： Serge Bierhuizen

发明人： Serge Bierhuizen

IPC分类号： F21V8/00

CPC分类号： G02B6/0021 ,  G02B6/0018 ,  G02B6/0023 ,  G02B6/0031 ,  G02B6/0065 ,  G02B6/0068 ,  G02B6/0073 ,  G02B6/0083 ,  G02F1/133603 ,  G02F1/133615 ,  H01L2224/14

摘要： Backlights containing low profile, side-emitting LEDs are described that have improved brightness uniformity. In one embodiment, the backlight comprises a solid transparent lightguide with a plurality of openings in a bottom surface of the lightguide, each opening containing a side-emitting LED. Prisms or other optical features are formed in the top wall of each opening to reflect light in the lightguide towards a light output surface of the lightguide so that the side-emitting LEDs do not appear as dark spots at the output of the backlight. To avoid any direct emission from the sides of the LED toward the output surface of the lightguide appearing as bright areas, optical features are formed at the edges of the opening or in the output surface of the lightguide so that direct emission light is not output from the lightguide. Substantially identical cells may be formed in the lightguide using cellular walls around one or more LEDs.

摘要翻译： 描述了具有改进的亮度均匀性的背光源，其包含低轮廓侧发光LED。 在一个实施例中，背光包括在光导的底表面中具有多个开口的固体透明光导，每个开口包含侧发光LED。 棱镜或其他光学特征形成在每个开口的顶壁中以将光导中的光朝向光导的光输出表面反射，使得侧向发射的LED在背光的输出处不会出现为暗点。 为了避免从LED的侧面朝着作为亮区域的光导的输出表面的任何直接发射，在光导的开口的边缘或输出表面中形成光学特征，使得直接发射光不从 光导。 可以使用围绕一个或多个LED的细胞壁在光导中形成基本相同的细胞。

公开(公告)号：US07494246B2

公开(公告)日：2009-02-24

申请号：US11758952

申请日：2007-06-06

申请人： Gerard Harbers ,  Serge Bierhuizen

发明人： Gerard Harbers ,  Serge Bierhuizen

IPC分类号： F21V21/00

CPC分类号： F21V11/14 ,  F21S8/04 ,  F21V5/04 ,  F21V7/0008 ,  F21V7/0091 ,  F21V15/01 ,  F21Y2103/10 ,  F21Y2115/10

摘要： High power white light LEDs are distributed within a thin reflective cavity. The cavity depth may be less than 3 cm and, in one embodiment, is about 1 cm. A light output surface of the cavity is a flat reflector with many small openings. A small plastic lens is positioned over each opening for causing the light emitted from each opening to form a cone of light between approximately 50-75 degrees. Alternatively, each hole may be shaped to be a truncated cone to control the dispersion. The light emitted by the LEDs is mixed in the cavity by reflecting off all six reflective walls of the cavity. The light will ultimately escape through the many holes, forming a relatively uniform pattern of light on a surface to be illuminated by the luminaire.

摘要翻译： 大功率白光LED分布在薄反射腔内。 腔深度可以小于3cm，在一个实施例中，为约1cm。 空腔的光输出表面是具有许多小开口的平面反射器。 一个小的塑料透镜位于每个开口上方，用于使从每个开口发射的光形成大约50-75度之间的光。 或者，每个孔可以被成形为截锥，以控制分散。 LED发射的光通过反射空腔的所有六个反射壁而混合在空腔中。 光将最终通过许多孔逃逸，在由照明器照明的表面上形成相对均匀的光线图案。

公开(公告)号：US20080143970A1

公开(公告)日：2008-06-19

申请号：US11610449

申请日：2006-12-13

申请人： Gerard Harbers ,  Serge Bierhuizen

发明人： Gerard Harbers ,  Serge Bierhuizen

IPC分类号： G03B21/00

CPC分类号： H04N9/3155 ,  G03B21/2013 ,  G03B33/10 ,  H04N9/3105 ,  H04N9/3111 ,  H04N9/315

摘要： Amber light LEDs have a higher luminance than red light LEDs. A vast majority of images displayed on television consists of colors that can be created using amber, green and blue components, with only a small percentage of red. In one embodiment of the present invention, the typically red primary light source in a projection display system is augmented with an amber light source. Green and blue primary light sources are also provided. All the light sources are high power LEDs. The particular mixture of the red and amber light is accomplished by varying the duty cycles of the red LEDs and the amber LEDs. If the RGB image to be displayed can be created using a higher percentage of amber light and a lower percentage of red light, the duty cycle of the amber LEDs is increased while the duty cycle of the red LEDs is decreased. Light/pixel modulators for creating the full color image from the three primary light sources are controlled to compensate for the variable amber/red mixture. This technique improves the efficiency of the projection system and generates less heat. A further increase in luminance can be achieved by controlling the light mixture from green and cyan LEDs as a primary light source and/or by controlling the light mixture from blue and blue-cyan LEDs as a primary light source.

摘要翻译： 琥珀色LED具有比红色LED更高的亮度。 电视上显示的绝大多数图像包括可以使用琥珀色，绿色和蓝色组件创建的颜色，只有少量的红色。 在本发明的一个实施例中，投影显示系统中的典型的红色一次光源用琥珀色光源增强。 还提供绿色和蓝色的初级光源。 所有的光源都是大功率LED。 通过改变红色LED和琥珀色LED的占空比来实现红色和琥珀色光的特定混合。 如果可以使用更高百分比的琥珀色光和较低百分比的红光来创建要显示的RGB图像，则红色LED的占空比减小时，琥珀色LED的占空比将增加。 用于从三个主要光源产生全色图像的光/像素调制器被控制以补偿可变的琥珀色/红色混合物。 这种技术提高了投影系统的效率并产生较少的热量。 通过控制来自绿色和青色LED的光混合物作为主要光源和/或通过控制来自蓝色和蓝色 - 青色LED的光混合物作为主要光源，可以进一步提高亮度。

公开(公告)号：US20080123339A1

公开(公告)日：2008-05-29

申请号：US11463443

申请日：2006-08-09

申请人： Serge Bierhuizen ,  Edwin de Groot ,  Gerard Harbers

发明人： Serge Bierhuizen ,  Edwin de Groot ,  Gerard Harbers

IPC分类号： F21V9/00

CPC分类号： H01L33/644 ,  F21K9/60 ,  F21K9/64 ,  F21V29/502 ,  F21Y2115/10 ,  H01L25/0753 ,  H01L33/507 ,  H01L33/58 ,  H01L2924/0002 ,  H01L2924/00

摘要： An illumination device includes a light source, such as one or more light emitting diodes in an array, that produces light having a first wavelength range. A separated wavelength converting element is mounted to receive the light emitted by the light source. The wavelength converting element is physically separated from the light source along the beam path. The wavelength converting element converts the light having a first wavelength range into light having a second wavelength range. In one embodiment, a color separation element is directly coupled to the wavelength converting element. The color separation element is also physically separated from the light source. In another embodiment, the wavelength converting element is held by a heat sink by the sides.

摘要翻译： 照明装置包括诸如阵列中的一个或多个发光二极管的光源，其产生具有第一波长范围的光。 安装分离的波长转换元件以接收由光源发射的光。 波长转换元件沿光束路径与光源物理分离。 波长转换元件将具有第一波长范围的光转换成具有第二波长范围的光。 在一个实施例中，颜色分离元件直接耦合到波长转换元件。 色分离元件也与光源物理分离。 在另一个实施例中，波长转换元件由侧面由散热器保持。

公开(公告)号：US06899440B2

公开(公告)日：2005-05-31

申请号：US10150223

申请日：2002-05-17

申请人： Serge Bierhuizen

发明人： Serge Bierhuizen

IPC分类号： G02B27/00 ,  G02B27/28 ,  F21V9/14

CPC分类号： G02B27/283

摘要： A polarized light source for a display system includes an optical system to image light from a light source onto a display along a first optical path, a reflective polarizer to receive the light from the optical system along a first optical path, direct light of a first polarization of the display, and reflect light of a second polarization along a second optical path separate from the first optical path toward the optical system, a mirror in the second optical path to receive light having the second polarization from the reflective polarizer, and reflect it back to the reflective polarizer, and a polarization conversion system in the second optical path between the reflective polarizer and the mirror to convert the polarization of the reflected light of the second polarization to the first polarization.

摘要翻译： 用于显示系统的偏振光源包括：将来自光源的光成像到沿着第一光路的显示器上的光学系统;反射偏振器，用于沿着第一光路接收来自光学系统的光;第一 显示器的极化，并且沿着与第一光路分离的第二光路朝向光学系统反射第二偏振光;第二光路中的反射镜，用于接收来自反射偏振器的具有第二偏振的光，并将其反射 以及在反射偏振器和反射镜之间的第二光路中的偏振转换系统，以将第二偏振的反射光的偏振转换为第一偏振。

公开(公告)号：US07994529B2

公开(公告)日：2011-08-09

申请号：US12265131

申请日：2008-11-05

申请人： Serge Bierhuizen ,  Mark Butterworth

发明人： Serge Bierhuizen ,  Mark Butterworth

IPC分类号： H01L33/00

CPC分类号： B29C45/1671 ,  B29C45/14655 ,  B29D11/00355 ,  B29L2031/3406 ,  G02B6/003 ,  G02B6/0031 ,  G02B6/0068 ,  G02B6/0073 ,  H01L33/54 ,  H01L33/58

摘要： A double-molded lens for an LED includes an outer lens molded around the periphery of an LED die and a collimating inner lens molded over the top surface of the LED die and partially defined by a central opening in the outer lens. The outer lens is formed using silicone having a relatively low index of refraction such as n=1.33-1.47, and the inner lens is formed of a higher index silicone, such as n=1.54-1.76, to cause TIR within the inner lens. Light not internally reflected by the inner lens is transmitted into the outer lens. The shape of the outer lens determines the side emission pattern of the light. The front and side emission patterns separately created by the two lenses may be tailored for a particular backlight or automotive application.

摘要翻译： 用于LED的双重模制透镜包括在LED模具的周围模制的外透镜和在LED模具的顶表面上模制并且部分地由外透镜中的中心开口限定的准直内透镜。 外透镜使用具有较低折射率（例如n = 1.33-1.47）的硅酮形成，并且内透镜由较高折射率的硅酮形成，例如n = 1.54-1.76，以引起内透镜内的TIR。 内部透镜未内部反射的光被透射到外部透镜中。 外透镜的形状确定光的侧发射图案。 由两个透镜分开创建的前侧和侧面发射图案可以针对特定背光或汽车应用而定制。

公开(公告)号：US20100201916A1

公开(公告)日：2010-08-12

申请号：US12760612

申请日：2010-04-15

申请人： Serge Bierhuizen

发明人： Serge Bierhuizen

IPC分类号： G02F1/1335 ,  G02F1/13357

CPC分类号： G02B6/0021 ,  G02B6/0018 ,  G02B6/0023 ,  G02B6/0031 ,  G02B6/0065 ,  G02B6/0068 ,  G02B6/0073 ,  G02B6/0083 ,  G02F1/133603 ,  G02F1/133615 ,  H01L2224/14

摘要： Backlights containing low profile, side-emitting LEDs are described that have improved brightness uniformity. In one embodiment, the backlight comprises a solid transparent lightguide with a plurality of openings in a bottom surface of the lightguide, each opening containing a side-emitting LED. Prisms or other optical features are formed in the top wall of each opening to reflect light in the lightguide towards a light output surface of the lightguide so that the side-emitting LEDs do not appear as dark spots at the output of the backlight. To avoid any direct emission from the sides of the LED toward the output surface of the lightguide appearing as bright areas, optical features are formed at the edges of the opening or in the output surface of the lightguide so that direct emission light is not output from the lightguide. Substantially identical cells may be formed in the lightguide using cellular walls around one or more LEDs.

摘要翻译： 描述了具有改进的亮度均匀性的背光源，其包含低轮廓侧发光LED。 在一个实施例中，背光包括在光导的底表面中具有多个开口的固体透明光导，每个开口包含侧发光LED。 棱镜或其他光学特征形成在每个开口的顶壁中以将光导中的光朝向光导的光输出表面反射，使得侧向发射的LED在背光的输出处不会出现为暗点。 为了避免从LED的侧面朝着作为亮区域的光导的输出表面的任何直接发射，在光导的开口的边缘或输出表面中形成光学特征，使得直接发射光不从 光导。 可以使用围绕一个或多个LED的细胞壁在光导中形成基本相同的细胞。

公开(公告)号：US20100091498A1

公开(公告)日：2010-04-15

申请号：US12248968

申请日：2008-10-10

申请人： Serge BIERHUIZEN ,  Gregory ENG

发明人： Serge BIERHUIZEN ,  Gregory ENG

IPC分类号： F21S8/00

CPC分类号： H01L33/58 ,  G02B6/0021 ,  G02B6/0028 ,  G02B6/0031 ,  G02B19/0028 ,  G02B19/0061 ,  G02B19/0071 ,  G02B27/095

摘要： A low profile side-emitting lens for an LED die has two tiers of different waveguides radially extending out from a center side-emitting lens. An LED emits light into the center side-emitting lens, which has a curved surface that internally reflects the LED light outward approximately parallel to the top surface of the LED die. The center lens has a height of 2 mm, required for reflecting the LED light outward. Radially extending from the periphery of the bottom half of the center lens is a bottom tier of waveguides, each having a height of 1 mm, and radially extending from the periphery of the top half of the center lens is a top tier of waveguides, each having a height of 1 mm. The light output areas of the top and bottom tiers of waveguides are parallel with each other so that the 2 mm high side emission is reduced to a 1 mm side emission without reducing the emission area.

摘要翻译： 用于LED管芯的低边侧发射透镜具有从中心侧发射透镜径向延伸的两层不同波导。 LED发射到中心侧发射透镜中，该透镜具有内部将LED光向外反射的曲面，大致平行于LED芯片的顶表面。 中心透镜的高度为2mm，需要向外反射LED灯。 从中心透镜的下半部的周边径向延伸的是底层的波导，每个具有1mm的高度，并且从中心透镜的上半部的周边径向延伸的是顶层波导，每个 高度为1mm。 波导的顶层和底层的光输出区域彼此平行，使得2mm的高边发射减少到1mm的侧发射而不减少发射面积。

公开(公告)号：US07682850B2

公开(公告)日：2010-03-23

申请号：US11378812

申请日：2006-03-17

申请人： Gerard Harbers ,  Serge Bierhuizen ,  Mark Pugh

发明人： Gerard Harbers ,  Serge Bierhuizen ,  Mark Pugh

IPC分类号： H01L21/00

CPC分类号： H01L33/505 ,  C09K11/7774 ,  G02F1/133603 ,  G02F2001/133614 ,  H01L33/504 ,  H01L2224/16225 ,  H01L2933/0041 ,  Y02B20/181

摘要： A white light LED for use in backlighting or otherwise illuminating an LCD is described where the white light LED comprises a blue LED over which is affixed a preformed red phosphor platelet and a preformed green phosphor platelet. In one embodiment, to form a platelet, a controlled amount of phosphor powder is placed in a mold and heated under pressure to sinter the grains together. The platelet can be made very smooth on all surfaces. A UV LED may also be used in conjunction with red, green, and blue phosphor plates. The LED dies vary in color and brightness and are binned in accordance with their light output characteristics. Phosphor plates with different characteristics are matched to the binned LEDs to create white light LEDs with a consistent white point for use in backlights for liquid crystal displays.

摘要翻译： 描述了用于背光或以其他方式照明LCD的白光LED，其中白光LED包括蓝色LED，其上附着预先形成的红色荧光体片和预制的绿色荧光体片。 在一个实施方案中，为了形成血小板，将受控量的荧光体粉末放置在模具中并在压力下加热以将颗粒烧结在一起。 血小板可以在所有表​​面上非常光滑。 UV LED也可以与红色，绿色和蓝色荧光体板一起使用。 LED管芯的颜色和亮度不同，并根据其光输出特性进行分样。 具有不同特性的荧光板与分箱LED匹配，以创建白光LED，并具有用于液晶显示器背光源的一致白点。

公开(公告)号：US20080315228A1

公开(公告)日：2008-12-25

申请号：US11954712

申请日：2007-12-12

申请人： Michael R. Krames ,  Gerd Mueller ,  Oleg Borisovich Shchekin ,  Mark Pugh ,  Gerard Harbers ,  John E. Epler ,  Serge Bierhuizen ,  Regina Mueller-Mach

发明人： Michael R. Krames ,  Gerd Mueller ,  Oleg Borisovich Shchekin ,  Mark Pugh ,  Gerard Harbers ,  John E. Epler ,  Serge Bierhuizen ,  Regina Mueller-Mach

IPC分类号： H01L33/00

CPC分类号： H01L33/50 ,  H01L33/385 ,  H01L33/405 ,  H01L33/46 ,  H01L33/60 ,  H01L2224/0554 ,  H01L2224/05568 ,  H01L2224/05573 ,  H01L2224/05624 ,  H01L2224/05639 ,  H01L2224/13 ,  H01L2924/00014 ,  H01L2924/013 ,  H01L2224/05599 ,  H01L2224/0555 ,  H01L2224/0556

摘要： Low profile, side-emitting LEDs are described that generate white light, where all light is emitted within a relatively narrow angle generally parallel to the surface of the light-generating active layer. The LEDs enable the creation of very thin backlights for backlighting an LCD. In one embodiment, the LED emits blue light and is a flip chip with the n and p electrodes on the same side of the LED. Separately from the LED, a transparent wafer has deposited on it a red and green phosphor layer. The phosphor color temperature emission is tested, and the color temperatures vs. positions along the wafer are mapped. A reflector is formed over the transparent wafer. The transparent wafer is singulated, and the phosphor/window dice are matched with the blue LEDs to achieve a target white light color temperature. The phosphor/window is then affixed to the LED.

摘要翻译： 描述了产生白光的低轮廓侧面发射LED，其中所有光在通常平行于发光有源层的表面的相对窄的角度内发射。 LED使得能够创建非常薄的背光用于背光LCD。 在一个实施例中，LED发射蓝光，并且是LED和LED的同一侧上的n和p电极的倒装芯片。 与LED分开，透明晶片在其上沉积有红色和绿色磷光体层。 测试荧光体色温发射，并且映射色温与晶片上的位置。 在透明晶片上形成反射器。 将透明晶片分离，并将荧光体/窗口骰子与蓝色LED匹配以实现目标白光色温。 然后将磷光体/窗口固定到LED。