公开(公告)号：US20140085924A1

公开(公告)日：2014-03-27

申请号：US13628770

申请日：2012-09-27

Applicant: OSRAM SYLVANIA INC.

Inventor： Ming Li ,  Qiong Huang ,  Yi Yang ,  Camil-Daniel Ghiu

IPC: F21V8/00

CPC classification number: G09F13/18 ,  G02B6/0021 ,  G02B6/0025 ,  G02B6/0028 ,  G09F2013/1804 ,  G09F2013/1809 ,  G09F2013/1831 ,  G09F2013/1854 ,  G09F2013/1881 ,  G09F2013/222

Abstract: An edge-lit light panel is disclosed, which includes a generally planar, transparent light guide. Light, such as from one or more solid state light source arrays, is coupled into the light guide through its lateral edge, and propagates generally laterally within the light guide via total internal reflection. A diffuser is attached to the front or rear face of the light guide, such as by lamination. The diffuser may have a refractive index matched to that of the light guide. The light guide may have one or more concave features on its lateral edge to reduce reflection losses at high angles of incidence. The concave features may include a single, one-dimensional groove that includes all the solid state light sources along a particular straight edge of the light panel, or may include a series of concave dimples, with one dimple for each solid state light source.

Abstract translation: 公开了一种边缘照明的光板，其包括大致平面的透明光导。 诸如来自一个或多个固态光源阵列的光通过其侧边缘耦合到光导中，并且通过全内反射在光导内通常横向地传播。 扩散器例如通过层压连接到光导的前表面或后表面。 扩散器可以具有与光导的折射率匹配的折射率。 导光体可以在其侧边缘上具有一个或多个凹形特征，以减小高入射角的反射损失。 凹形特征可以包括单一的一维凹槽，其包括沿着光板的特定直边缘的所有固态光源，或者可以包括一系列凹陷凹坑，每个固态光源具有一个凹坑。

公开(公告)号：US09743483B2

公开(公告)日：2017-08-22

申请号：US15093917

申请日：2016-04-08

Applicant: OSRAM SYLVANIA Inc.

Inventor： Ming Li ,  Qi Dai ,  Keng Chen

IPC: G01J1/02 ,  G01J1/16 ,  H05B33/08 ,  G01J1/58

CPC classification number: H05B33/0869 ,  G01J1/0228 ,  G01J1/0238 ,  G01J1/16 ,  G01J1/58 ,  G01J2001/1673

Abstract: Techniques are disclosed for maintaining consistent lumen output of a lighting assembly over time. By maintaining a consistent lumen output, it is possible to maintain acceptable color stability where color mixing of multiple outputs is used. The lighting assembly may be any lighting configuration that might suffer from lumen depreciation and/or color drift over time, and may include any type(s) of light source(s) that may be monitored and driven accordingly. The lighting assembly, in addition to light source(s), includes a photo detector and a directed light source, such as a laser. The directed light source provides a golden sample for use in calibrating the photo detector, which in turn monitors lumen output of the light source(s). Drive signals are adjusted to account for lumen depreciation of the monitored light source(s).

公开(公告)号：US10327295B2

公开(公告)日：2019-06-18

申请号：US16061338

申请日：2016-12-12

Applicant: OSRAM SYLVANIA Inc.

Inventor： Andrew Johnsen ,  Keng Chen ,  Ming Li ,  Peng Xiao

IPC: H05B37/00 ,  H05B33/08

Abstract: A multi string controller with independent current setting for each string is designed for solid state lighting applications. This controller can regulate multiple channels of LEDs. Each string may have a different forward voltage and current setting. A constant buck regulator is also integrated inside this controller to regulate the total current, which is fed into the LED output channels. The circuit also contains a feedback loop in order to precisely control the current passing through each string and is immune to transient conditions.

公开(公告)号：US09271362B2

公开(公告)日：2016-02-23

申请号：US14394512

申请日：2013-05-06

Applicant: OSRAM SYLVANIA Inc.

Inventor： Qi Dai ,  Ming Li ,  Robert Harrison ,  Edward Haidar

IPC: H05B33/08

CPC classification number: H05B33/0845 ,  H05B33/086 ,  H05B33/0896

Abstract: Systems and methods of Planckian and non-Planckian dimming of solid state light sources are disclosed. For a given first range of correlated color temperature values on the 1931 CIE Chromaticity Diagram, the current through a plurality of solid state light sources is adjusted so that the light output thereby follows the correlated color temperature values relating to the black body curve over that given first range. For a given second range of correlated color temperature values, the current through a plurality of solid state light sources is adjusted so that the light output thereby deviates from black body curve and instead relates to a series of coordinates that tracks a line between the curve and a color point for one of the solid state light sources.

Abstract translation: 披露了普朗克和非普朗克斯固态光源调光系统和方法。 对于在1931 CIE色度图上的相关色温值的给定第一范围，调整通过多个固态光源的电流，使得光输出由此遵循与给定的黑体曲线相关的相关色温值 第一范围 对于给定的相关色温值的第二范围，调整通过多个固态光源的电流，使得光输出从而偏离黑体曲线，而是涉及一系列坐标，跟踪曲线和 一个固态光源的色点。

公开(公告)号：US20190045595A1

公开(公告)日：2019-02-07

申请号：US16061338

申请日：2016-12-12

Applicant: OSRAM SYLVANIA INC.

Inventor： Andrew Johnsen ,  Keng Chen ,  Ming Li ,  Peng Xiao

IPC: H05B33/08

Abstract: A multi string controller with independent current setting for each string is designed for solid state lighting applications. This controller can regulate multiple channels of LEDs. Each string may have a different forward voltage and current setting. A constant buck regulator is also integrated inside this controller to regulate the total current, which is fed into the LED output channels. The circuit also contains a feedback loop in order to precisely control the current passing through each string and is immune to transient conditions.

公开(公告)号：US20150327343A1

公开(公告)日：2015-11-12

申请号：US14394512

申请日：2013-05-06

Applicant: OSRAM SYLVANIA Inc.

Inventor： Qi Dai ,  Ming Li ,  Robert Harrison ,  Edward Haidar

IPC: H05B33/08

CPC classification number: H05B33/0845 ,  H05B33/086 ,  H05B33/0896

Abstract: Systems and methods of Planckian and non-Planckian dimming of solid state light sources are disclosed. For a given first range of correlated color temperature values on the 1931 CIE Chromaticity Diagram, the current through a plurality of solid state light sources is adjusted so that the light output thereby follows the correlated color temperature values relating to the black body curve over that given first range. For a given second range of correlated color temperature values, the current through a plurality of solid state light sources is adjusted so that the light output thereby deviates from black body curve and instead relates to a series of coordinates that tracks a line between the curve and a color point for one of the solid state light sources.

Abstract translation: 披露了普朗克和非普朗克斯固态光源调光系统和方法。 对于在1931 CIE色度图上的相关色温值的给定第一范围，调整通过多个固态光源的电流，使得光输出由此遵循与给定的黑体曲线相关的相关色温值 第一范围 对于给定的相关色温值的第二范围，调整通过多个固态光源的电流，使得光输出从而偏离黑体曲线，而是涉及一系列坐标，跟踪曲线和 一个固态光源的色点。