Optical film with sharpened bandedge

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 6967778
SERIAL NO

09634319

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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The present invention provides reflective films and other optical bodies which exhibit sharp bandedges on one or both sides of the main reflection bands. The optical bodies comprise multilayer stacks M1 and M2, each having first order reflections in a desired part of the spectrum and comprising optical repeating units R1 and R2, respectively. At least one of the optical repeating units R1 and R2 varies monotonically in optical thickness along the thickness of the associated multilayer stack.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
3M INNOVATIVE PROPERTIES COMPANYST PAUL, MN8578

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ouderkirk, Andrew J Woodbury, MN 317 11073
Weber, Michael F Shoreview, MN 207 9510
Wheatley, John A Lake Elmo, MN 160 6460

Cited Art Landscape

Patent Info (Count) # Cites Year
 
GENERAL ELECTRIC COMPANY (1)
4720426 Reflective coating for solid-state scintillator bar 169 1986
 
KEY BANK OF MAINE (1)
5294657 Adhesive composition with decorative glitter 145 1992
 
3M INNOVATIVE PROPERTIES COMPANY (13)
5486949 Birefringent interference polarizer 297 1990
5269995 Coextrusion of multilayer articles using protective boundary layers and apparatus therefor 264 1992
5316703 Method of producing a lamellar polymeric body 198 1993
5360659 Two component infrared reflecting film 191 1993
* 5389324 Layer thickness gradient control in multilayer polymeric bodies 251 1993
5448404 Formable reflective multilayer body 212 1994
5612820 Birefringent interference polarizer 240 1995
5686979 Optical panel capable of switching between reflective and transmissive states 393 1995
5699188 Metal-coated multilayer mirror 274 1995
5783120 Method for making an optical film 264 1996
5825543 Diffusely reflecting polarizing element including a first birefringent phase and a second phase 335 1996
5808794 Reflective polarizers having extended red band edge for controlled off axis color 176 1996
5825542 Diffusely reflecting multilayer polarizers and mirrors 198 1997
 
U.S. PHILIPS CORPORATION (3)
5188760 Liquid crystalline material and display cell containing said material 205 1991
5793456 Cholesteric polarizer and the manufacture thereof 231 1995
5721603 Illumination system and display device including such a system 174 1996
 
Niopic Moscow Research and Production Association (1)
5235443 Polarizer device 218 1992
 
HONEYWELL INC. (1)
5751388 High efficiency polarized display 278 1995
 
ROLIC AG (1)
5319478 Light control systems with a circular polarizer and a twisted nematic liquid crystal having a minimum path difference of .lambda./2 192 1991
 
DAI NIPPON PRINTING CO., LTD. (1)
5770306 Antireflection film containing ultrafine particles, polarizing plate and liquid crystal display device 159 1996
 
SUMITOMO CHEMICAL COMPANY, LIMITED (1)
5767935 Light control sheet and liquid crystal display device comprising the same 146 1996
 
THE DOW CHEMICAL COMPANY (1)
5103337 Infrared reflective optical interference film 207 1990
 
GTE Products Corporation (1)
5179468 Interleaving of similar thin-film stacks for producing optical interference coatings 37 1991
 
Kaiser Aerospace and Electronics Corporation (1)
5486935 High efficiency chiral nematic liquid crystal rear polarizer for liquid crystal displays having a notch polarization bandwidth of 100 nm to 250 nm 182 1993
 
BRIDGESTONE CORPORATION (1)
5744534 Light scattering material 140 1996
 
HORIBA, LTD. (1)
4747666 Multi-layer interference filter 14 1986
 
MERCK PATENT GMBH (1)
5211878 Difluorobenzonitrile derivatives 135 1991
 
FPINNOVATIONS (1)
5629055 Solidified liquid crystals of cellulose with optically variable properties 162 1994
 
POLAROID CORPORATION (4)
4446305 Optical device including birefringent polymer 232 1981
4520189 Optical device including birefringent aromatic amino carboxylic acid polymer 172 1984
4521588 Optical device including birefringent polyhydrazide polymer 158 1984
4525413 Optical device including birefringent polymer 197 1984
* Cited By Examiner

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
IMAX THEATRES INTERNATIONAL LIMITED (5)
8746888 Stereoscopic projector using spectrally-adjacent color bands 1 2011
8651663 Stereoscopic projector using scrolling color bands 0 2011
9335541 Stereoscopic glasses using dichroic and absorptive layers 0 2012
8947424 Spectral stereoscopic projection system 0 2012
8864314 Stereoscopic projection system using tunable light emitters 0 2012
 
3M INNOVATIVE PROPERTIES COMPANY (11)
7329465 Optical films incorporating cyclic olefin copolymers 1 2004
7348066 Optical films incorporating cyclic olefin copolymers 9 2005
8975011 Multi-layer articles capable of forming color images and method of forming color images 1 2011
8975012 Multi-layer articles capable of forming color images and methods of forming color images 1 2011
9159885 Remote phosphor LED device with broadband output and controllable color 2 2011
9151463 LED color combiner 1 2011
9028083 Phosphor reflector assembly for remote phosphor LED device 0 2011
8912562 Remote phosphor LED constructions 1 2011
9625123 Lens assembly for remote phosphor LED device 0 2012
9441809 Illumination systems with sloped transmission spectrum front reflector 0 2012
9360176 Remote phosphor LED constructions 0 2014
* Cited By Examiner

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