公开(公告)号：US20140022771A1

公开(公告)日：2014-01-23

申请号：US14029858

申请日：2013-09-18

Applicant: ABL IP HOLDING LLC

Inventor： Donald F. May ,  Jack C. Rains, JR.

IPC: F21K99/00

CPC classification number: F21K9/60 ,  F21K9/62 ,  F21Y2113/20 ,  F21Y2115/10 ,  G01J3/0254 ,  G01J3/0264 ,  G01J3/10 ,  G01J3/501

Abstract: A system to provide radiant energy of selectable spectral characteristic (e.g. a selectable color combination) uses an integrating cavity to combine energy of different wavelengths from different sources. The cavity has a diffusely reflective interior surface and an aperture for allowing emission of combined radiant energy. Sources of radiant energy of different wavelengths, typically different-color LEDs, supply radiant energy into the interior of the integrating cavity. In the examples, the points of entry of the energy into the cavity typically are located so that they are not directly visible through the aperture. The cavity effectively integrates the energy of different wavelengths, so that the combined radiant energy emitted through the aperture includes the radiant energy of the various wavelengths. The apparatus also includes a control circuit coupled to the sources for establishing output intensity of radiant energy of each of the sources. Control of the intensity of emission of the sources sets the amount of each wavelength of energy in the combined output and thus determines a spectral characteristic of the radiant energy output through the aperture.

Abstract translation: 提供可选光谱特性（例如，可选颜色组合）的辐射能的系统使用积分腔来组合来自不同光源的不同波长的能量。 空腔具有漫反射内表面和用于允许发射组合辐射能的孔。 不同波长的辐射能源（通常为不同颜色的LED）将辐射能提供到整合腔的内部。 在这些示例中，将能量进入空腔的点通常被定位成使得它们不能通过孔径直接看到。 空腔有效地集成了不同波长的能量，使得通过孔径发射的组合辐射能包括各种波长的辐射能。 该装置还包括耦合到源的控制电路，用于建立每个源的辐射能的输出强度。 源的发射强度的控制设定了组合输出中能量的每个波长的量，从而确定通过孔输出的辐射能的光谱特性。