US Patent No: 6,967,778

Number of patents in Portfolio can not be more than 2000

Optical film with sharpened bandedge

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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, MN8034

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ouderkirk, Andrew J Woodbury, MN 301 9838
Weber, Michael F Shoreview, MN 204 8471
Wheatley, John A Lake Elmo, MN 149 5649

Cited Art Landscape

Patent Info (Count) # Cites Year
 
GENERAL ELECTRIC COMPANY (1)
4,720,426 Reflective coating for solid-state scintillator bar 165 1986
 
KEY BANK OF MAINE (1)
5,294,657 Adhesive composition with decorative glitter 142 1992
 
3M INNOVATIVE PROPERTIES COMPANY (13)
5,486,949 Birefringent interference polarizer 279 1990
5,269,995 Coextrusion of multilayer articles using protective boundary layers and apparatus therefor 255 1992
5,316,703 Method of producing a lamellar polymeric body 192 1993
5,360,659 Two component infrared reflecting film 166 1993
* 5,389,324 Layer thickness gradient control in multilayer polymeric bodies 236 1993
5,448,404 Formable reflective multilayer body 202 1994
5,612,820 Birefringent interference polarizer 233 1995
5,686,979 Optical panel capable of switching between reflective and transmissive states 376 1995
5,699,188 Metal-coated multilayer mirror 259 1995
5,783,120 Method for making an optical film 258 1996
5,825,543 Diffusely reflecting polarizing element including a first birefringent phase and a second phase 316 1996
5,808,794 Reflective polarizers having extended red band edge for controlled off axis color 173 1996
5,825,542 Diffusely reflecting multilayer polarizers and mirrors 192 1997
 
U.S. PHILIPS CORPORATION (3)
5,188,760 Liquid crystalline material and display cell containing said material 201 1991
5,793,456 Cholesteric polarizer and the manufacture thereof 221 1995
5,721,603 Illumination system and display device including such a system 171 1996
 
Niopic Moscow Research and Production Association (1)
5,235,443 Polarizer device 212 1992
 
Honeywell Inc. (1)
5,751,388 High efficiency polarized display 263 1995
 
ROLIC AG (1)
5,319,478 Light control systems with a circular polarizer and a twisted nematic liquid crystal having a minimum path difference of .lambda./2 189 1991
 
DAI NIPPON PRINTING CO., LTD. (1)
5,770,306 Antireflection film containing ultrafine particles, polarizing plate and liquid crystal display device 156 1996
 
SUMITOMO CHEMICAL COMPANY, LIMITED (1)
5,767,935 Light control sheet and liquid crystal display device comprising the same 140 1996
 
THE DOW CHEMICAL COMPANY (1)
5,103,337 Infrared reflective optical interference film 187 1990
 
GTE Products Corporation (1)
5,179,468 Interleaving of similar thin-film stacks for producing optical interference coatings 36 1991
 
Kaiser Aerospace & Electronics Corporation (1)
5,486,935 High efficiency chiral nematic liquid crystal rear polarizer for liquid crystal displays having a notch polarization bandwidth of 100 nm to 250 nm 176 1993
 
BRIDGESTONE CORPORATION (1)
5,744,534 Light scattering material 137 1996
 
HORIBA, LTD. (1)
4,747,666 Multi-layer interference filter 13 1986
 
MERCK PATENT GMBH (1)
5,211,878 Difluorobenzonitrile derivatives 132 1991
 
FPINNOVATIONS (1)
5,629,055 Solidified liquid crystals of cellulose with optically variable properties 156 1994
 
POLAROID CORPORATION (4)
4,446,305 Optical device including birefringent polymer 214 1981
4,520,189 Optical device including birefringent aromatic amino carboxylic acid polymer 169 1984
4,521,588 Optical device including birefringent polyhydrazide polymer 155 1984
4,525,413 Optical device including birefringent polymer 192 1984
* Cited By Examiner

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
IMAX CORPORATION (4)
8,746,888 Stereoscopic projector using spectrally-adjacent color bands 1 2011
8,651,663 Stereoscopic projector using scrolling color bands 0 2011
8,947,424 Spectral stereoscopic projection system 0 2012
8,864,314 Stereoscopic projection system using tunable light emitters 0 2012
 
3M INNOVATIVE PROPERTIES COMPANY (8)
7,329,465 Optical films incorporating cyclic olefin copolymers 1 2004
7,348,066 Optical films incorporating cyclic olefin copolymers 7 2005
8,975,011 Multi-layer articles capable of forming color images and method of forming color images 0 2011
8,975,012 Multi-layer articles capable of forming color images and methods of forming color images 0 2011
9,159,885 Remote phosphor LED device with broadband output and controllable color 0 2011
9,151,463 LED color combiner 0 2011
9,028,083 Phosphor reflector assembly for remote phosphor LED device 0 2011
8,912,562 Remote phosphor LED constructions 1 2011
* Cited By Examiner

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