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, MN8918

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ouderkirk, Andrew J Woodbury, MN 378 7789
Weber, Michael F Shoreview, MN 252 6894
Wheatley, John A Lake Elmo, MN 192 4549

Cited Art Landscape

Patent Info (Count) # Cites Year
 
3M INNOVATIVE PROPERTIES COMPANY (13)
5,486,949 Birefringent interference polarizer 253 1990
5,269,995 Coextrusion of multilayer articles using protective boundary layers and apparatus therefor 246 1992
5,316,703 Method of producing a lamellar polymeric body 187 1993
5,360,659 Two component infrared reflecting film 138 1993
5,389,324 Layer thickness gradient control in multilayer polymeric bodies 219 1993
5,448,404 Formable reflective multilayer body 192 1994
5,612,820 Birefringent interference polarizer 225 1995
5,686,979 Optical panel capable of switching between reflective and transmissive states 351 1995
5,699,188 Metal-coated multilayer mirror 244 1995
5,783,120 Method for making an optical film 245 1996
5,825,543 Diffusely reflecting polarizing element including a first birefringent phase and a second phase 286 1996
5,808,794 Reflective polarizers having extended red band edge for controlled off axis color 169 1996
5,825,542 Diffusely reflecting multilayer polarizers and mirrors 188 1997
 
POLAROID CORPORATION (4)
4,446,305 Optical device including birefringent polymer 187 1981
4,520,189 Optical device including birefringent aromatic amino carboxylic acid polymer 167 1984
4,521,588 Optical device including birefringent polyhydrazide polymer 152 1984
4,525,413 Optical device including birefringent polymer 188 1984
 
U.S. Philips Corporation (3)
5,188,760 Liquid crystalline material and display cell containing said material 199 1991
5,793,456 Cholesteric polarizer and the manufacture thereof 208 1995
5,721,603 Illumination system and display device including such a system 169 1996
 
BRIDGESTONE CORPORATION (1)
5,744,534 Light scattering material 137 1996
 
DAI NIPPON PRINTING CO., LTD. (1)
5,770,306 Antireflection film containing ultrafine particles, polarizing plate and liquid crystal display device 153 1996
 
FPINNOVATIONS (1)
5,629,055 Solidified liquid crystals of cellulose with optically variable properties 152 1994
 
GENERAL ELECTRIC COMPANY (1)
4,720,426 Reflective coating for solid-state scintillator bar 164 1986
 
GTE Products Corporation (1)
5,179,468 Interleaving of similar thin-film stacks for producing optical interference coatings 36 1991
 
Honeywell Inc. (1)
5,751,388 High efficiency polarized display 247 1995
 
HORIBA, LTD. (1)
4,747,666 Multi-layer interference filter 13 1986
 
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 172 1993
 
KEY BANK OF MAINE (1)
5,294,657 Adhesive composition with decorative glitter 142 1992
 
MERCK PATENT GMBH (1)
5,211,878 Difluorobenzonitrile derivatives 131 1991
 
Niopic Moscow Research and Production Association (1)
5,235,443 Polarizer device 205 1992
 
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./2 183 1991
 
SUMITOMO CHEMICAL COMPANY, LIMITED (1)
5,767,935 Light control sheet and liquid crystal display device comprising the same 138 1996
 
The Dow Chemical Company (1)
5,103,337 Infrared reflective optical interference film 162 1990

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
3M INNOVATIVE PROPERTIES COMPANY (2)
7,329,465 Optical films incorporating cyclic olefin copolymers 1 2004
7,348,066 Optical films incorporating cyclic olefin copolymers 4 2005
 
EASTMAN KODAK COMPANY (2)
8,746,888 Stereoscopic projector using spectrally-adjacent color bands 0 2011
8,651,663 Stereoscopic projector using scrolling color bands 0 2011

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