Patent search ap:("3M INNOVATIVE PROPERTIES COMPANY") AND inv:"David J. Koch" Page 1

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发明申请
HIGH CONTRAST PROJECTION SCREEN 审中-公开
Title translation: 高对比度投影屏

公开(公告)号：US20140313579A1

公开(公告)日：2014-10-23

申请号：US14359318

申请日：2012-12-10

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Richard Y. Liu , Francis V. Loncar, JR. , David J. Koch

IPC: G03B21/56

CPC classification number: G03B21/56 , G03B21/60

Abstract: The present disclosure describes a front projection system. The front projection system includes a light absorbing layer having an absorbance in a visible range of the electromagnetic spectrum of at least 80% and a light diffusing layer disposed on the light absorbing layer between the light absorbing layer and the projector. The light diffusing layer includes a plurality of metal flakes uniformly distributed in a host material, an average size of the plurality of metal flakes being in a range from about 0.5 microns to about 20 microns, at concentration of in a range from about 3% to about 30% by weight. A plurality of light absorbing particles uniformly distributed in the host material at a concentration of less than about 7% by weight, and a major front surface facing the projector having an average surface roughness in a range from about 0.5 microns to about 10 microns.

Abstract translation: 本公开描述了一种前投影系统。前投影系统包括具有至少80％的电磁光谱的可见范围内的吸光度的光吸收层和设置在光吸收层和投影仪之间的光吸收层上的光漫射层。光漫射层包括均匀分布在主体材料中的多个金属薄片，多个金属薄片的平均尺寸在约0.5微米至约20微米的范围内，浓度范围为约3％至约20微米约30重量％。多个光吸收颗粒以小于约7重量％的浓度均匀分布在主体材料中，并且面向投影仪的主表面的平均表面粗糙度在约0.5微米至约10微米的范围内。