公开(公告)号：US20080304250A1

公开(公告)日：2008-12-11

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： F21V7/00 ,  F21V9/16

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：US07766490B2

公开(公告)日：2010-08-03

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： G03B21/26

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：US20070215890A1

公开(公告)日：2007-09-20

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： H01L33/00

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：US20070081336A1

公开(公告)日：2007-04-12

申请号：US11248945

申请日：2005-10-11

申请人： Serge Bierhuizen ,  Gerard Harbers

发明人： Serge Bierhuizen ,  Gerard Harbers

IPC分类号： F21V9/00

CPC分类号： H04N9/315

摘要： A light emitting device includes a light emitting element, an optical concentrator, such as a compound parabolic concentrator, a dichroic filter between the light emitting element and the optical concentrator and a wavelength converting material, such as a phosphor. The optical concentrator receives light from the light emitting element, via the dichroic filter, and emits the light from an exit surface, which is smaller than the entrance surface. The optical concentrator may be manufactured from a material with a high refractive index, such as sapphire. The wavelength converting material is, e.g., disposed over the exit surface. The radiance of the wavelength converting material is increased by pumping the wavelength converting material through a high index of refraction material and outputting the converted light into a low refractive index medium, such as air.

摘要翻译： 发光器件包括发光元件，诸如复合抛物面聚光器的光聚焦器，发光元件和光集中器之间的二向色滤光器以及诸如荧光体的波长转换材料。 光集中器通过二向色滤光器从发光元件接收光，并从小于入射面的出射面发射光。 光聚焦器可以由具有高折射率的材料制成，例如蓝宝石。 波长转换材料例如设置在出射表面上。 波长转换材料的辐射度通过泵送波长转换材料通过高折射率材料并将转换的光输出到诸如空气的低折射率介质中来增加。

公开(公告)号：US07534025B2

公开(公告)日：2009-05-19

申请号：US11467522

申请日：2006-08-25

申请人： Gerard Harbers ,  Oleg B. Shchekin ,  Serge Bierhuizen

发明人： Gerard Harbers ,  Oleg B. Shchekin ,  Serge Bierhuizen

IPC分类号： F21V7/041

CPC分类号： G02B6/0073 ,  G02B6/0021 ,  G02B6/0031 ,  G02B6/0083 ,  G02B6/0091 ,  G02F1/133615

摘要： One or more LEDs are mounted within an LCD without the use of any printed circuit board (PCB), thus reducing the thickness of the LCD by about the thickness of the conventional PCB. In one embodiment, the LED and submount are mounted so that the submount is opposing the liquid crystal layer side of the LCD, so that the liquid crystal layers provide the mechanical support for the submount and LED die. The LED die (mounted on the submount) may be inserted into a cavity formed in the “top” surface of the light guide, and the top surface of the light guide is abutted against the liquid crystal layers. In such a configuration, the LED light source, including all supporting components, adds no thickness to the LCD. In another embodiment, on the “bottom” surface of the LCD opposing the LED die is an electrically switchable mirror that is either reflective or transparent. In its transparent state, the LED in the LCD may be used as a flash in a cell phone camera, while the LCD may be viewed to take the picture.

摘要翻译： 一个或多个LED安装在LCD中，而不使用任何印刷电路板（PCB），从而将LCD的厚度减小约传统PCB的厚度。 在一个实施例中，安装LED和基座，使得底座与LCD的液晶层侧相对，使得液晶层为子安装座和LED管芯提供机械支撑。 LED模具（安装在基座上）可以插入到形成在导光体的“顶部”表面中的空腔中，并且导光体的顶表面与液晶层抵接。 在这种构造中，包括所有支撑部件的LED光源不向LCD增加厚度。 在另一个实施例中，在与LED管芯相对的LCD的“底部”表面上是可反射或透明的可电换镜。 在其透明状态下，LCD中的LED可以用作手机相机中的闪光灯，而LCD可以被观看拍摄照片。

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：US08061884B2

公开(公告)日：2011-11-22

申请号：US12171228

申请日：2008-07-10

申请人： Gerard Harbers ,  Mark Pugh ,  Serge Bierhuizen

发明人： Gerard Harbers ,  Mark Pugh ,  Serge Bierhuizen

IPC分类号： F21V7/04

CPC分类号： G02B6/002 ,  G02B6/0016 ,  G02B6/0025 ,  G02B6/0031 ,  G02B6/0068 ,  G02B6/0091

摘要： Various embodiments of corner-coupled backlights are described, where one or more white light LEDs are optically coupled to a truncated corner edge of a solid rectangular light guide backlight. The one or more LEDs are mounted in a small reflective cavity, whose output opening is coupled to the truncated corner of the light guide. The reflective cavity provides a more uniform light distribution at a wide variety of angles to the face of the truncated corner to better distribute light throughout the entire light guide volume. To enable a thinner light guide, the LED die is positioned in the reflective cavity so that the major light emitting surface of the LED is parallel to the top surface of the light guide. The reflective cavity reflects the upward LED light toward the edge of the light guide.

摘要翻译： 描述角落耦合背光灯的各种实施例，其中一个或多个白光LED光学耦合到实心矩形导光背光的截头角边缘。 一个或多个LED安装在小反射腔中，其输出开口连接到导光体的截头角。 反射腔提供与截顶角的多种角度更均匀的光分布，以更好地在整个导光体积上分配光。 为了实现更薄的光导，LED管芯位于反射腔中，使得LED的主要发光表面平行于光导的顶表面。 反射腔将向上的LED光朝向光导的边缘反射。

公开(公告)号：US20080266900A1

公开(公告)日：2008-10-30

申请号：US12171228

申请日：2008-07-10

申请人： Gerard Harbers ,  Mark Pugh ,  Serge Bierhuizen

发明人： Gerard Harbers ,  Mark Pugh ,  Serge Bierhuizen

IPC分类号： F21V8/00

CPC分类号： G02B6/002 ,  G02B6/0016 ,  G02B6/0025 ,  G02B6/0031 ,  G02B6/0068 ,  G02B6/0091

摘要： Various embodiments of corner-coupled backlights are described, where one or more white light LEDs are optically coupled to a truncated corner edge of a solid rectangular light guide backlight. The one or more LEDs are mounted in a small reflective cavity, whose output opening is coupled to the truncated corner of the light guide. The reflective cavity provides a more uniform light distribution at a wide variety of angles to the face of the truncated corner to better distribute light throughout the entire light guide volume. To enable a thinner light guide, the LED die is positioned in the reflective cavity so that the major light emitting surface of the LED is parallel to the top surface of the light guide. The reflective cavity reflects the upward LED light toward the edge of the light guide.

摘要翻译： 描述角落耦合背光灯的各种实施例，其中一个或多个白光LED光学耦合到实心矩形导光背光的截头角边缘。 一个或多个LED安装在小反射腔中，其输出开口连接到导光体的截头角。 反射腔提供与截顶角的多种角度更均匀的光分布，以更好地在整个导光体积上分配光。 为了实现更薄的光导，LED管芯位于反射腔中，使得LED的主要发光表面平行于光导的顶表面。 反射腔将向上的LED光朝向光导的边缘反射。