Claims
- 1. A polarizer, comprising:
- a plurality of layers arranged in a repeating sequence of at least a first, second, and third layer type;
- wherein at least one of said first, second, and third layer type comprises a continuous phase and a disperse phase, and wherein said continuous and disperse phases comprise diverse thermoplastic polymers.
- 2. The polarizer of claim 1, wherein said continuous and disperse phases have indices of refraction which differ by less than about 0.05 for visible light polarized along a first axis, and which differ by more than about 0.05 for visible light polarized along a second axis.
- 3. The polarizer of claim 1, wherein said polarizer has a total diffuse reflectivity of at least 30% for visible light.
- 4. The polarizer of claim 1, wherein said disperse phase is present in an amount within the range of about 15% to about 30% by volume relative to said continuous phase.
- 5. A polarizing film, comprising:
- a first layer comprising a polymeric continuous phase and a disperse phase disposed within said continuous phase; and
- a second layer, contiguous to said first layer;
- wherein said first and second layers have indices of refraction which differ by less than about 0.05 for visible light polarized along a first axis and which differ by more than about 0.05 for visible light polarized along a second axis orthogonal to said first axis; and wherein said first axis is perpendicular to the plane of said film.
- 6. The polarizer of claim 5, wherein said continuous and disperse phases have indices of refraction which differ by less than about 0.05 for visible light polarized along a first axis, and which differ by more than about 0.05 for visible light polarized along a second axis.
- 7. The polarizer of claim 5, wherein said polarizer has a total diffuse reflectivity of at least 30% for visible light.
- 8. The polarizer of claim 5, wherein said disperse phase is present in an amount within the range of about 15% to about 30% by volume relative to said continuous phase.
- 9. A polarizer, comprising:
- a core layer comprising a continuous phase and a disperse phase;
- a first layer, disposed on a first side of said core layer; and
- a second layer, disposed on a second side of said core layer;
- wherein said continuous and disperse phases comprise first and second diverse polymeric materials, respectively, and wherein said first and second layers comprise at least one of said first and second polymeric materials.
- 10. The polarizer of claim 9, wherein each of said first and second layers comprise said first polymeric material.
- 11. The polarizer of claim 10, wherein said continuous phase comprises a naphthalene dicarboxylic acid.
- 12. The polarizer of claim 10, wherein said disperse phase comprises syndiotactic polystyrene.
- 13. The polarizer of claim 11, wherein said naphthalene dicarboxylic acid is polyethylene naphthalate.
- 14. The polarizer of claim 9, wherein said continuous and disperse phases have indices of refraction which differ by less than about 0.05 for visible light polarized along a first axis, and which differ by more than about 0.05 for visible light polarized along a second axis.
- 15. The polarizer of claim 9, wherein said polarizer has a total diffuse reflectivity of at least 30% for visible light.
- 16. The polarizer of claim 9, wherein said disperse phase is present in an amount within the range of about 15% to about 30% by volume relative to said continuous phase.
Parent Case Info
This is a division of application Ser. No. 08/609,753 filed Feb. 29, 1996 now U.S. Pat. No. 5,867,316.
US Referenced Citations (85)
Foreign Referenced Citations (18)
Number |
Date |
Country |
0 464 499 A2 |
Jan 1992 |
EPX |
0 469 732 A3 |
Feb 1992 |
EPX |
0 488 544 A1 |
Jun 1992 |
EPX |
0 488 627 A2 |
Jun 1992 |
EPX |
0 506 196 A1 |
Sep 1992 |
EPX |
0 514 223 A1 |
Nov 1992 |
EPX |
0 597 261 A1 |
May 1994 |
EPX |
0 627 638 A1 |
Dec 1994 |
EPX |
0 684 423 A2 |
Nov 1995 |
EPX |
4-141603 |
May 1992 |
JPX |
6001871 |
Jan 1994 |
JPX |
WO 9429765 |
Dec 1994 |
WOX |
WO 9517303 |
Jun 1995 |
WOX |
WO 9517691 |
Jun 1995 |
WOX |
WO 9517692 |
Jun 1995 |
WOX |
WO 9517699 |
Jun 1995 |
WOX |
WO 9527919 |
Oct 1995 |
WOX |
WO 9619347 |
Jun 1996 |
WOX |
Divisions (1)
|
Number |
Date |
Country |
Parent |
609753 |
Feb 1996 |
|