US Patent No: 6,967,778
Number of patents in Portfolio can not be more than 2000
Optical film with sharpened bandedge
Stats
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Nov 22, 2005
Issued date -
Aug 9, 2000
filing date -
09/634,319
serial no -
In Force
status
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Abstract
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
Related Publications
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International Classification(s)
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Cited Art
| Patent Info | (Count) | # Cites | Year |
|---|---|---|---|
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| 5,486,949 Birefringent interference polarizer | 247 | 1990 | |
| 5,269,995 Coextrusion of multilayer articles using protective boundary layers and apparatus therefor | 231 | 1992 | |
| 5,316,703 Method of producing a lamellar polymeric body | 185 | 1993 | |
| 5,360,659 Two component infrared reflecting film | 121 | 1993 | |
| 5,389,324 Layer thickness gradient control in multilayer polymeric bodies | 209 | 1993 | |
| 5,448,404 Formable reflective multilayer body | 185 | 1994 | |
| 5,612,820 Birefringent interference polarizer | 221 | 1995 | |
| 5,686,979 Optical panel capable of switching between reflective and transmissive states | 320 | 1995 | |
| 5,699,188 Metal-coated multilayer mirror | 220 | 1995 | |
| 5,783,120 Method for making an optical film | 231 | 1996 | |
| 5,825,543 Diffusely reflecting polarizing element including a first birefringent phase and a second phase | 259 | 1996 | |
| 5,808,794 Reflective polarizers having extended red band edge for controlled off axis color | 166 | 1996 | |
| 5,825,542 Diffusely reflecting multilayer polarizers and mirrors | 182 | 1997 | |
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| 4,446,305 Optical device including birefringent polymer | 178 | 1981 | |
| 4,520,189 Optical device including birefringent aromatic amino carboxylic acid polymer | 166 | 1984 | |
| 4,521,588 Optical device including birefringent polyhydrazide polymer | 151 | 1984 | |
| 4,525,413 Optical device including birefringent polymer | 187 | 1984 | |
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| 5,188,760 Liquid crystalline material and display cell containing said material | 198 | 1991 | |
| 5,793,456 Cholesteric polarizer and the manufacture thereof | 194 | 1995 | |
| 5,721,603 Illumination system and display device including such a system | 167 | 1996 | |
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| 5,744,534 Light scattering material | 136 | 1996 | |
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| 5,770,306 Antireflection film containing ultrafine particles, polarizing plate and liquid crystal display device | 152 | 1996 | |
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| 5,629,055 Solidified liquid crystals of cellulose with optically variable properties | 148 | 1994 | |
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| 4,720,426 Reflective coating for solid-state scintillator bar | 161 | 1986 | |
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| 5,179,468 Interleaving of similar thin-film stacks for producing optical interference coatings | 33 | 1991 | |
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| 5,751,388 High efficiency polarized display | 229 | 1995 | |
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| 4,747,666 Multi-layer interference filter | 12 | 1986 | |
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| 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 | 169 | 1993 | |
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| 5,294,657 Adhesive composition with decorative glitter | 140 | 1992 | |
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| 5,211,878 Difluorobenzonitrile derivatives | 130 | 1991 | |
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| 5,235,443 Polarizer device | 201 | 1992 | |
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| 5,319,478 Light control systems with a circular polarizer and a twisted nematic liquid crystal having a minimum path difference of .lambda./2 | 173 | 1991 | |
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| 5,767,935 Light control sheet and liquid crystal display device comprising the same | 137 | 1996 | |
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| 5,103,337 Infrared reflective optical interference film | 150 | 1990 | |
Patent Citation Ranking
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | May 22, 2013 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | May 22, 2017 |
| Fee | Large entity fee | small entity fee | micro entity fee |
|---|---|---|---|
| Surcharge - 7.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| Surcharge - 11.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
| Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |