公开(公告)号：US20180267228A1

公开(公告)日：2018-09-20

申请号：US15755172

申请日：2016-08-24

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Kenneth A. EPSTEIN ,  John A. WHEATLEY ,  Tao LIU

IPC: F21V8/00

Abstract: A light guide includes a light input surface, a first major surface orthogonal to the light input surface, a second major surface opposing the first major, a plurality of discrete light extraction features disposed on the second major surface and a plurality of closely packed prisms disposed along the second major surface. The plurality of discrete light extraction features separate the plurality of closely packed prisms from the second major surface. Each of the closely packed prisms include a first prism surface forming a first angle with the second surface in a range from 80 to 100 degrees or in a range from 85 to 95 degrees or in a range from 87 to 93 degrees.

公开(公告)号：US20150260895A1

公开(公告)日：2015-09-17

申请号：US14727220

申请日：2015-06-01

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Michael F. WEBER ,  Tao LIU ,  Timothy J. NEVITT

IPC: G02B5/30

CPC classification number: G02B5/3041 ,  G02B5/305 ,  G02F1/13362

Abstract: A film construction includes a broad band reflective polarizing film that may be immersed in an ultra low refractive index medium. The reflecting polarizing film is characterized by a pass axis and a block axis, and its reflectivity for white light of the pass state polarization increases with increasing incidence angle to provide a compressed or narrowed viewing cone selectively in one plane of incidence. In some embodiments, the plane of incidence associated with the compressed viewing cone is aligned with the pass axis. In other embodiments it is aligned with the block axis.

Abstract translation: 膜结构包括可以浸在超低折射率介质中的宽带反射偏振膜。 反射偏振膜的特征在于通过轴和块轴，并且其通过状态偏振的白光的反射率随着入射角的增加而增加，以在一个入射平面中选择性地提供压缩或变窄的观察锥。 在一些实施例中，与压缩观察锥相关联的入射平面与通过轴对准。 在其他实施例中，它与块轴对齐。