公开(公告)号：US20140071658A1

公开(公告)日：2014-03-13

申请号：US14082788

申请日：2013-11-18

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Michael F. WEBER ,  Timothy J. NEVITT ,  John A. WHEATLEY ,  Rolf W. BIERNATH ,  David G. FREIER ,  Gilles J. BENOIT ,  Charles D. HOYLE ,  Andrew J. OUDERKIRK ,  Zhaohui YANG

IPC: F21V7/00 ,  F21K99/00

CPC classification number: F21V7/00 ,  F21K9/60 ,  G02B6/0055 ,  G02B6/0056 ,  G02B6/0096 ,  G02F1/133605 ,  G02F1/133606 ,  G02F1/133611 ,  G02F1/133615 ,  G02F1/13362

Abstract: A recycling cavity such as used in a backlight or similar extended area source includes a front and back reflector, the front reflector being partially transmissive to provide an output illumination area. The recycling cavity also includes a component that provides the cavity with a balance of specular and diffuse characteristics so as to balance cavity efficiency and brightness uniformity over the output area. The component can be characterized by a transport ratio of greater than 15% for a 15 degree incidence angle, and less than 95% for a 45 degree incidence angle.

Abstract translation: 诸如用在背光源或类似的延伸区域源中的回收腔包括前反射器和后反射器，前反射器是部分透射的，以提供输出照明区域。 回收腔还包括为空腔提供镜面和漫反射特性的平衡的部件，以便在输出区域上平衡空腔效率和亮度均匀性。 该组件的特征可以在15度入射角下的传输比大于15％，对于45度入射角小于95％。