-
公开(公告)号：US20150317923A1
公开(公告)日：2015-11-05
申请号：US14651300
申请日：2013-12-11
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： William F. EDMONDS , Nathaniel K. NAISMITH , Martin B. WOLK , Michael Benton FREE , William W. MERRILL , David T. YUST , John F. VAN DERLOFSKE, III , Jun XIAO , Albert T. SCHMITZ
CPC classification number: G02B5/208 , G02B5/0284 , G02B5/12 , G02B5/201 , G02B5/223 , G02B5/285 , G06K7/12 , G06K7/1447 , G06K19/06103 , G06K19/0614 , G09F3/0294 , G09F3/0297 , G09F3/10 , G09F13/16 , H04N5/2256
Abstract: Tags are made from optical films to provide a pattern that is inconspicuous to ordinary observers, but that is detectable by a camera or other imaging device. The pattern is provided by first and second portions of a patterned layer, the first portions selectively filtering at least a portion of blue visible light from other visible light wavelengths. Filtering in the portion of the blue region helps make the pattern inconspicuous. The tags may also include an indicia layer configured to mark a location of the pattern, and a contrast enhancing layer disposed behind the patterned layer and configured to enhance a contrast of the pattern. In some cases, the first portions of the patterned layer may filter optical wavelengths other than blue, such as near-infrared light. The pattern may comprise machine-readable information, e.g., a linear bar code or a 2-D bar code. Associated methods and systems are also disclosed.
Abstract translation: 标签由光学膜制成，以提供与普通观察者不相似的图案，但是可通过相机或其他成像装置检测。 该图案由图案化层的第一和第二部分提供，第一部分选择性地从其它可见光波长过滤至少一部分蓝色可见光。 在蓝色区域的部分过滤有助于使图案不显眼。 标签还可以包括被配置为标记图案的位置的标记层和设置在图案化层后面并且被配置为增强图案的对比度的对比度增强层。 在一些情况下，图案化层的第一部分可以滤除蓝色以外的光波长，例如近红外光。 该图案可以包括机器可读信息，例如线性条形码或2-D条形码。 还公开了相关的方法和系统。
-
公开(公告)号：US20230184996A1
公开(公告)日：2023-06-15
申请号：US17919368
申请日：2021-04-09
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Martin B. WOLK , Robert L. BROTT , Karl K. STENSVAD , Vadim N. SAVVATEEV , James M. NELSON , Lin ZHAO , Caitlin RACE , Adam D. HAAG
CPC classification number: G02B1/002 , G02B5/305 , G02B5/3066 , C23C14/205 , C23C14/10 , C23C14/3464 , G02B2207/101
Abstract: An optical metasurface film includes a flexible polymeric film having a first major surface, a patterned polymer layer having a first surface proximate to the first major surface of the flexible polymeric film and having a second nanostructured surface opposite the first surface, and a refractive index contrast layer including a refractive index contrast material adjacent to the nanostructured surface of the patterned polymer layer forming a nanostructured bilayer with a nano structured interface. The nanostructured bilayer comprising a plurality of nanostructures disposed on the flexible polymeric film. The nanostructured bilayer imparts a light phase shift that varies as a function of position of the nano structured bilayer on the flexible polymeric film. The light phase shift of the nanostructured bilayer defines a predetermined operative phase profile of the optical metasurface film. A light reflecting layer is in optical communication with the nano structured bilayer.
-
公开(公告)号：US20130153787A1
公开(公告)日：2013-06-20
申请号：US13713124
申请日：2012-12-13
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Bernard O. GEAGHAN , Michael Benton FREE , Edward S. HAGERMOSER , Rachael P. MARINO , Pradnya V. NAGARKAR , Martin B. WOLK
IPC: G01C21/20
CPC classification number: G06F3/0321 , G01C21/20 , G06F3/0317 , G06F3/03545 , G06K9/222 , G06K19/06037 , G06K19/06046
Abstract: A digitizer system including a substrate having a position-unique photoluminescent indicia pattern. A stylus component receives optical signals indicative of the indicia pattern and determines therefrom the position of the stylus relative to the substrate. Methods of disposing indicia on the substrate, and styli suitable for sensing photoluminescent indicia are also described.
-
-
Search Results
3
records
(took 0.011 seconds)
