公开(公告)号：US09879157B2

公开(公告)日：2018-01-30

申请号：US14349020

申请日：2012-09-26

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Audrey A. Sherman ,  Kevin R. Schaffer ,  Robert L. Brott ,  Rolf W. Biernath ,  Joseph W. Woody, V ,  John A. Wheatley

IPC: B32B7/12 ,  C09J7/02 ,  C09J7/00 ,  C09J9/00 ,  F21V8/00 ,  B44C1/10 ,  B29C65/50

CPC classification number: C09J7/10 ,  B29C65/5007 ,  B44C1/105 ,  C09J7/00 ,  C09J9/00 ,  C09J2201/606 ,  C09J2201/622 ,  C09J2203/318 ,  C09J2433/00 ,  G02B6/0025 ,  Y10T428/1476 ,  Y10T428/24802

Abstract: Transfer tapes include an optically transparent adhesive layer with a first major surface and a second major surface, with at least one of the major surfaces including a microstructured pattern that is a permanent feature of the adhesive surface. The microstructured surface alters the direction of light. The optically transparent composition may include a low Tg polymeric component with a Tg of less than 20° C., and an acid or base functionality, and a high Tg polymeric component with a Tg of greater than 20° C., and an acid or base functionality, such that the functionality of the low Tg polymeric component and the functionality of the high Tg polymeric component form an acid-base interaction when mixed. The transfer tapes can be adhered to substrates to provide a microstructured surface to the substrate surface.

公开(公告)号：US20150369975A1

公开(公告)日：2015-12-24

申请号：US14762637

申请日：2014-01-09

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Michael B. Free ,  Martin B. Wolk ,  Rolf W. Biernath

IPC: G02B5/124 ,  B29C67/00 ,  B42D25/324

CPC classification number: G02B5/124 ,  B29C67/0044 ,  B29D11/00605 ,  B29K2101/12 ,  B29L2011/0083 ,  B42D25/324

Abstract: Retroreflective article having tailored optical properties and method for making the same. Retroreflective articles according to the present application comprise deformed cube corner elements having reduced optically active volume and reduced active volume height. Exemplary retroreflective articles have at least one of minimized contrast caused by seam welds, tiling lines or defects under retroreflective conditions, markings discernible at different viewing conditions and reduced overall retroreflectivity.

Abstract translation: 具有定制的光学特性的回射制品及其制造方法。 根据本申请的逆反射制品包括具有减小的光学活性体积和减小的活性体积高度的变形的立体角元件。 示例性的回射制品具有由缝焊，平铺线或回射条件下的缺陷引起的最小化对比中的至少一种，在不同观察条件下可辨别的标记和降低的整体后向反射率。

公开(公告)号：US20140009963A1

公开(公告)日：2014-01-09

申请号：US13938016

申请日：2013-07-09

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Timothy J. Nevitt ,  Timothy J. Hebrink ,  Michael F. Weber ,  Rolf W. Biernath ,  David G. Freier ,  John A. Wheatley ,  Andrew J. Ouderkirk ,  Charles D. Hoyle ,  Kristopher J. Derks

IPC: F21V7/04

CPC classification number: F21V7/04 ,  G02B6/0055 ,  G02B6/0056 ,  G02B6/0068 ,  G02B6/0096 ,  G02F1/133603 ,  G02F1/133605 ,  G02F1/13362

Abstract: A front and back reflector are arranged to form a hollow light recycling cavity having an output region, and one or more light sources (e.g. LEDs) are disposed to emit light into the cavity. In one aspect, the back reflector has a design characterized by a first and second parameter. The first design parameter is a ratio of the collective emitting area of the light sources Aemit to the area of the output region Aout, and Aemit/Aout is preferably from 0.0001 to 0.1. The second design parameter is SEP/H, where H is the depth of the recycling cavity, and SEP is an average plan view source separation associated with the light sources. Other aspects of the disclosed extended area light sources are also described.

Abstract translation: 前后反射器被布置成形成具有输出区域的中空光循环腔，并且设置一个或多个光源（例如LED）以将光发射到空腔中。 在一个方面，后反射器具有以第一和第二参数为特征的设计。 第一设计参数是光源Aemit的总发光面积与输出区域Aout的面积的比，Aemit / Aout优选为0.0001〜0.1。 第二个设计参数是SEP / H，其中H是回收腔的深度，SEP是与光源相关的平均平面视图源分离。 还描述了所公开的扩展区域光源的其他方面。