公开(公告)号：US08946998B2

公开(公告)日：2015-02-03

申请号：US13204464

申请日：2011-08-05

申请人： Charles Owen Edwards ,  Gang Wang ,  Yi-Qun Li

发明人： Charles Owen Edwards ,  Gang Wang ,  Yi-Qun Li

IPC分类号： H05B37/02 ,  H05B33/08

CPC分类号： H05B33/0869 ,  H05B33/089 ,  H05B37/0245

摘要： A light emitting system comprises an LED-based light emitting device and a controller for controlling operation of the device. The device comprises at least two LEDs that are operable to generate light of different colors that contribute to the emission product of the device. The controller is operable to control light emission from the LEDs in response to the measured intensity of the first and second color light contributions in the emission product. To measure the individual light contributions the controller is operable to interrupt, or at least change, light emission from one LED for a selected time period and during this time period to measure the intensity of the emission product of the device. The intensity of light of the first and second color can be determined by comparing the measured intensity with the measured intensity when the light emission from the other LED is interrupted or changed.

摘要翻译： 发光系统包括基于LED的发光装置和用于控制装置的操作的控制器。 该装置包括至少两个LED，其可操作以产生有助于装置的发射产物的不同颜色的光。 控制器可操作以响应于发射产物中测量的第一和第二彩色光贡献的强度来控制来自LED的光发射。 为了测量单独的光贡献，控制器可操作以在所选时间段内和在该时间段内中断或至少改变来自一个LED的光发射，以测量装置的发射产物的强度。 可以通过将来自其他LED的发光中断或改变时的测量强度与测量强度进行比较来确定第一和第二颜色的光的强度。

公开(公告)号：US20120032600A1

公开(公告)日：2012-02-09

申请号：US13204464

申请日：2011-08-05

申请人： Charles Owen Edwards ,  Gang Wang ,  Yi-Qun Li

发明人： Charles Owen Edwards ,  Gang Wang ,  Yi-Qun Li

IPC分类号： H05B37/02

CPC分类号： H05B33/0869 ,  H05B33/089 ,  H05B37/0245

摘要： A light emitting system comprises an LED-based light emitting device and a controller for controlling operation of the device. The device comprises at least two LEDs that are operable to generate light of different colors that contribute to the emission product of the device. The controller is operable to control light emission from the LEDs in response to the measured intensity of the first and second color light contributions in the emission product. To measure the individual light contributions the controller is operable to interrupt, or at least change, light emission from one LED for a selected time period and during this time period to measure the intensity of the emission product of the device. The intensity of light of the first and second color can be determined by comparing the measured intensity with the measured intensity when the light emission from the other LED is interrupted or changed.

摘要翻译： 发光系统包括基于LED的发光装置和用于控制装置的操作的控制器。 该装置包括至少两个LED，其可操作以产生有助于装置的发射产物的不同颜色的光。 控制器可操作以响应于发射产物中测量的第一和第二彩色光贡献的强度来控制来自LED的光发射。 为了测量单独的光贡献，控制器可操作以在所选时间段内和在该时间段内中断或至少改变来自一个LED的光发射，以测量装置的发射产物的强度。 可以通过将来自其他LED的发光中断或改变时的测量强度与测量强度进行比较来确定第一和第二颜色的光的强度。

公开(公告)号：US20090224652A1

公开(公告)日：2009-09-10

申请号：US12398059

申请日：2009-03-04

申请人： Yi-Qun Li ,  Gang Wang ,  Li-De Chen

发明人： Yi-Qun Li ,  Gang Wang ,  Li-De Chen

IPC分类号： H01J1/62

CPC分类号： H01L33/504 ,  C09K11/0883 ,  C09K11/7733 ,  C09K11/7734 ,  C09K11/7739 ,  C09K11/7774 ,  C09K11/7792 ,  F21K9/00 ,  F21V9/30 ,  H01L25/0753 ,  H01L33/50 ,  H01L2924/0002 ,  Y02B20/181 ,  H01L2924/00

摘要： Embodiments of the present invention are directed toward white light illumination systems (so called “white LEDs”) that comprise a multi-chip excitation source and a phosphor package. In a two-chip source, the two LEDs may be UV-emitting and blue emitting, or blue-emitting and green-emitting. The phosphor package is configured to emit photoluminescence in wavelengths ranging from about 440 nm to about 700 nm upon co-excitation from the first and second radiation sources. The photoluminescence emitted by the phosphors is at least 40 percent of the total power in the white light illumination, and the portion of the total power in the white light illumination contributed by the first and second radiation sources (LEDs) is less than about 60 percent. This ratio can vary in alternative embodiments, and includes 50/50, 60/40, 70/30, and 80/20, respectively. The white light illumination emitted by the system has in one embodiment a color rendering index (CRI) greater than about 90.

摘要翻译： 本发明的实施例涉及包括多芯片激发源和磷光体封装的白光照明系统（所谓的“白光LED”）。 在双芯片源中，两个LED可以是UV发射和蓝色发射，或发蓝光和绿色发射。 磷光体封装被配置为在从第一和第二辐射源共激发时发射波长为约440nm至约700nm的光致发光。 由荧光体发射的光致发光是白光照射中总功率的至少40％，由第一和第二辐射源（LED）贡献的白光照射中的总功率的部分小于约60％ 。 该比例可以在替代实施例中变化，并且分别包括50/50,60 / 40,70 / 30和80/20。 系统发出的白光照明在一个实施例中是显色指数（CRI）大于约90。

公开(公告)号：US06641940B1

公开(公告)日：2003-11-04

申请号：US09974430

申请日：2001-10-09

申请人： Yi-Qun Li ,  Xiao-Dong Xiang ,  Yi Dong ,  Shifan Cheng ,  Gang Wang ,  Ning Wang

发明人： Yi-Qun Li ,  Xiao-Dong Xiang ,  Yi Dong ,  Shifan Cheng ,  Gang Wang ,  Ning Wang

IPC分类号： B32B900

CPC分类号： C04B35/6262 ,  C04B35/4682 ,  C04B41/009 ,  C04B41/5041 ,  C04B41/87 ,  C04B2111/00844 ,  C04B2235/3208 ,  C04B2235/3213 ,  C04B2235/3217 ,  C04B2235/3224 ,  C04B2235/3236 ,  C04B2235/3239 ,  C04B2235/3241 ,  C04B2235/3244 ,  C04B2235/3251 ,  C04B2235/3256 ,  C04B2235/3258 ,  C04B2235/3262 ,  C04B2235/3286 ,  C04B2235/604 ,  C04B2235/761 ,  C23C14/088 ,  H01P1/2002 ,  C04B41/4529 ,  C04B35/04 ,  C04B35/44

摘要： Composition for a solid state material, in bulk and in thin film form, that provides relatively high dielectric permittivity that is tunable with variable electrical field bias, relatively low loss tangent and low leakage current for microwave applications. In a first embodiment, the material is BaySr1−yTi1−xMxO3, where M is a substance or mixture including one or more elements drawn from a group consisting of Ta, Zr, Hf, V, Nb, Al, Ga, Cr, Mo, W, Mn, Sc and Re, and the indices x and y satisfy 0≦x≦1 and 0≦y≦1. A preferred choice is M=Ta, V, W, Mo and/or Nb. In a second embodiment, the material is BaySr1−yTi1−x−zTaxMzO3, where M is a substance or mixture including one or more trivalent elements drawn from a group consisting of Al, Ga and Cr and the indices x, y and z satisfy 0≦x+z≦1 and 0≦y≦1.

摘要翻译： 用于固体材料的体积和薄膜形式的组合物，其提供相对高的介电常数，其可变电场偏置可调，微波应用的相对低的损耗角正切和低泄漏电流。 在第一实施方案中，材料是BaySr1-yTi1-xMxO3，其中M是包含从由Ta，Zr，Hf，V，Nb，Al，Ga，Cr，Mo组成的组中的一种或多种元素的物质或混合物， W，Mn，Sc和Re，并且指数x和y满足0 <= x <= 1且0 <= y <= 1。 优选的选择是M = Ta，V，W，Mo和/或Nb。 在第二实施方案中，材料是BaySr1-yTi1-x-zTaxMzO3，其中M是包含从Al，Ga和Cr组成的组中绘制的一种或多种三价元素的物质或混合物，并且指数x，y和z满足0 <= x + z <= 1，0 <= Y＆LE; 1。

公开(公告)号：US08779685B2

公开(公告)日：2014-07-15

申请号：US12945641

申请日：2010-11-12

申请人： Gang Wang ,  Yi-Qun Li

发明人： Gang Wang ,  Yi-Qun Li

IPC分类号： H05B37/02

CPC分类号： H05B33/0854 ,  H01L2224/48091 ,  H01L2224/73265 ,  H05B33/0812 ,  H05B33/0872 ,  Y02B20/343 ,  H01L2924/00014

摘要： A high CRI white light emitting device comprises: a blue solid state light emitter (LED) operable to generate blue light; a phosphor material operable to absorb a portion of the blue light and to emit green/yellow light and a red solid state light emitter (LED) operable to generate red light. The emission product of the device comprises the combined light generated by the blue and red LEDs and green/yellow light generated by the phosphor material and appears white in color. The device further comprises a drive circuit operable to compensate for variation in the ratio (relative contribution) of red to blue light in the emission product such as to ensure that said variation is less than 20% over an operating temperature range of at least 25° C. The drive circuit can reduce variation in the CRI and CCT of the device's emission product over the operating temperature range.

摘要翻译： 高CRI白光发光装置包括：可操作以产生蓝光的蓝色固态光发射器（LED）; 可操作地吸收蓝光的一部分并发射绿/黄光的荧光体材料和可操作以产生红光的红色固态光发射器（LED）。 该装置的发射产物包括由蓝色和红色LED产生的组合光和由磷光体材料产生的绿色/黄色光​​，并且呈现白色。 该装置还包括驱动电路，其可操作以补偿发射产物中的红光与蓝光的比率（相对贡献）的变化，以确保在至少25°的工作温度范围内所述变化小于20％ C.驱动电路可以减少器件发射产物在工作温度范围内的CRI和CCT的变化。

公开(公告)号：US20120229038A1

公开(公告)日：2012-09-13

申请号：US13418229

申请日：2012-03-12

申请人： Qinghua Zeng ,  Gang Wang ,  Yi-Qun Li

发明人： Qinghua Zeng ,  Gang Wang ,  Yi-Qun Li

IPC分类号： H05B37/00 ,  C09K11/77 ,  C09K11/85 ,  C09K11/79

CPC分类号： C09K11/7734 ,  H01L33/502 ,  H05B33/145

摘要： Cehlorosilicate-based phosphors configured to emit yellow-green light in a wavelength ranging from about 500 nm to about 560 nm in response to an excitation source emitting at about 400 nm to about 480 nm, wherein the light emitted by the phosphor has a decay time ranging from about 1 millisecond (1 ms) to about 10 milliseconds (10 ms). The phosphor comprises a compound of the family Ca8-x-yAxEuyMg1-m-nBmMnn(Si1-sCsO4)4R2, where A is at least one divalent cation including Ca, Sr, Ba; B is Zn or Cd, or a divalent metal ion other than an alkaline earth; C is a cation, including at least one of Ge, Al, B, Gd, Ga, and N, and R is an anion, including F, Cl, Br, I, all respectively either individually, or in combinations.

摘要翻译： 基于硅氯硅酸盐的磷光体，被配置为响应于在约400nm至约480nm处发射的激发源，发射波长为约500nm至约560nm的黄绿色光，其中由所述荧光体发射的光具有衰减时间 范围从大约1毫秒（1毫秒）到大约10毫秒（10毫秒）。 磷光体包括Ca8-x-yAxEuyMg1-m-nBmMnn（Si1-sCsO4）4R2族的化合物，其中A是至少一种包括Ca，Sr，Ba的二价阳离子; B是Zn或Cd，或是碱土金属以外的二价金属离子; C是包括Ge，Al，B，Gd，Ga和N中的至少一种的阳离子，R是阴离子，包括F，Cl，Br，I，分别单独或组合使用。

公开(公告)号：US08567973B2

公开(公告)日：2013-10-29

申请号：US12398059

申请日：2009-03-04

申请人： Yi-Qun Li ,  Gang Wang ,  Li-De Chen

发明人： Yi-Qun Li ,  Gang Wang ,  Li-De Chen

IPC分类号： F21V9/16

CPC分类号： H01L33/504 ,  C09K11/0883 ,  C09K11/7733 ,  C09K11/7734 ,  C09K11/7739 ,  C09K11/7774 ,  C09K11/7792 ,  F21K9/00 ,  F21V9/30 ,  H01L25/0753 ,  H01L33/50 ,  H01L2924/0002 ,  Y02B20/181 ,  H01L2924/00

摘要： Embodiments of the present invention are directed toward white light illumination systems (so called “white LEDs”) that comprise a multi-chip excitation source and a phosphor package. In a two-chip source, the two LEDs may be UV-emitting and blue emitting, or blue-emitting and green-emitting. The phosphor package is configured to emit photoluminescence in wavelengths ranging from about 440 nm to about 700 nm upon co-excitation from the first and second radiation sources. The photoluminescence emitted by the phosphors is at least 40 percent of the total power in the white light illumination, and the portion of the total power in the white light illumination contributed by the first and second radiation sources (LEDs) is less than about 60 percent. This ratio can vary in alternative embodiments, and includes 50/50, 60/40, 70/30, and 80/20, respectively. The white light illumination emitted by the system has in one embodiment a color rendering index (CRI) greater than about 90.

摘要翻译： 本发明的实施例涉及包括多芯片激发源和磷光体封装的白光照明系统（所谓的“白光LED”）。 在双芯片源中，两个LED可以是UV发射和蓝色发射，或发蓝光和绿色发射。 磷光体封装被配置为在从第一和第二辐射源共激发时发射波长为约440nm至约700nm的光致发光。 由荧光体发射的光致发光是白光照射中总功率的至少40％，由第一和第二辐射源（LED）贡献的白光照射中的总功率的部分小于约60％ 。 该比例可以在替代实施例中变化，并且分别包括50/50,60 / 40,70 / 30和80/20。 系统发出的白光照明在一个实施例中是显色指数（CRI）大于约90。

公开(公告)号：US20110115406A1

公开(公告)日：2011-05-19

申请号：US12945641

申请日：2010-11-12

申请人： Gang Wang ,  Yi-Qun Li

发明人： Gang Wang ,  Yi-Qun Li

IPC分类号： H05B37/02 ,  H05B37/00

CPC分类号： H05B33/0854 ,  H01L2224/48091 ,  H01L2224/73265 ,  H05B33/0812 ,  H05B33/0872 ,  Y02B20/343 ,  H01L2924/00014

摘要： A high CRI white light emitting device comprises: a blue solid state light emitter (LED) operable to generate blue light; a phosphor material operable to absorb a portion of the blue light and to emit green/yellow light and a red solid state light emitter (LED) operable to generate red light. The emission product of the device comprises the combined light generated by the blue and red LEDs and green/yellow light generated by the phosphor material and appears white in color. The device further comprises a drive circuit operable to compensate for variation in the ratio (relative contribution) of red to blue light in the emission product such as to ensure that said variation is less than 20% over an operating temperature range of at least 25° C. The drive circuit can reduce variation in the CRI and CCT of the device's emission product over the operating temperature range.

摘要翻译： 高CRI白光发光装置包括：可操作以产生蓝光的蓝色固态光发射器（LED）; 可操作地吸收蓝光的一部分并发射绿/黄光的荧光体材料和可操作以产生红光的红色固态光发射器（LED）。 该装置的发射产物包括由蓝色和红色LED产生的组合光和由磷光体材料产生的绿色/黄色光​​，并且呈现白色。 该装置还包括驱动电路，其可操作以补偿发射产物中的红光与蓝光的比率（相对贡献）的变化，以确保在至少25°的工作温度范围内所述变化小于20％ C.驱动电路可以减少器件发射产物在工作温度范围内的CRI和CCT的变化。

公开(公告)号：US09085732B2

公开(公告)日：2015-07-21

申请号：US13418229

申请日：2012-03-12

申请人： Qinghua Zeng ,  Gang Wang ,  Yi-Qun Li

发明人： Qinghua Zeng ,  Gang Wang ,  Yi-Qun Li

IPC分类号： H05B37/00 ,  C09K11/77 ,  H05B33/14 ,  H01L33/50

CPC分类号： C09K11/7734 ,  H01L33/502 ,  H05B33/145

摘要： Chlorosilicate-based phosphors configured to emit yellow-green light in a wavelength ranging from about 500 nm to about 560 nm in response to an excitation source emitting at about 400 nm to about 480 nm, wherein the light emitted by the phosphor has a decay time ranging from about 1 millisecond (1 ms) to about 10 milliseconds (10 ms). The phosphor comprises a compound of the family Ca8-x-yAxEuyMg1-m-nBmMnn(Si1-sCsO4)4R2, where A is at least one divalent cation including Ca, Sr, Ba; B is Zn or Cd, or a divalent metal ion other than an alkaline earth; C is a cation, including at least one of Ge, Al, B, Gd, Ga, and N, and R is an anion, including F, Cl, Br, I, all respectively either individually, or in combinations.

摘要翻译： 配置为响应于在约400nm至约480nm处发射的激发源，在约500nm至约560nm的波长范围内发射黄绿色光的氯硅酸盐荧光体，其中由磷光体发射的光具有衰变时间 范围从大约1毫秒（1毫秒）到大约10毫秒（10毫秒）。 磷光体包括Ca8-x-yAxEuyMg1-m-nBmMnn（Si1-sCsO4）4R2族的化合物，其中A是至少一种包括Ca，Sr，Ba的二价阳离子; B是Zn或Cd，或是碱土金属以外的二价金属离子; C是包括Ge，Al，B，Gd，Ga和N中的至少一种的阳离子，R是阴离子，包括F，Cl，Br，I，分别单独或组合使用。

公开(公告)号：US20120155076A1

公开(公告)日：2012-06-21

申请号：US13164535

申请日：2011-06-20

申请人： Yi-Qun Li ,  Gang Wang

发明人： Yi-Qun Li ,  Gang Wang

IPC分类号： F21V9/00

CPC分类号： F21S8/026 ,  F21V3/08 ,  F21V3/12 ,  F21V9/30 ,  F21V29/507 ,  F21V29/74 ,  F21Y2105/10 ,  F21Y2113/13 ,  F21Y2115/10 ,  H01L2224/32225 ,  H01L2224/48091 ,  H01L2224/48227 ,  H01L2224/73265 ,  H05B33/0869 ,  Y02B20/383 ,  H01L2924/00014 ,  H01L2924/00

摘要： A light emitting device comprises: a package; at least one red LED housed in the package and operable to emit red light; at least one blue LED housed in the package and operable to emit blue light wherein the emission product of the device comprises the combination of light emitted by the red and blue LEDs; and a light transmissive material encapsulating the LEDs. Preferably, the package further comprises electrical contacts that are configured such that the drive current of the blue and red LEDs is independently controllable. Devices and/or light emitting systems further comprise a driver operable to control a drive current of the red and/or blue LEDs in response the measured emission intensities of the LEDs such as to maintain a substantially constant ratio of the blue to red light in the emission product.

摘要翻译： 发光器件包括：封装; 至少一个红色LED容纳在封装中并可操作以发射红光; 至少一个蓝色LED容纳在封装中并且可操作以发射蓝光，其中该器件的发射产物包括由红色和蓝色LED发射的光的组合; 以及封装LED的透光材料。 优选地，封装还包括电触点，其被配置为使得蓝色和红色LED的驱动电流是独立可控的。 设备和/或发光系统还包括驱动器，其可操作以响应于所测量的LED的发射强度来控制红色和/或蓝色LED的驱动电流，以便保持LED中的蓝色与红色光的基本恒定的比例 排放产品。