Multilayer optical bodies
First Claim
1. An optical body, comprising:
- a plurality of first optical layers, each first optical layer being oriented and comprising a polyester having terephthalate comonomer units and ethylene glycol comonomer units; and
a plurality of second optical layers disposed in a repeating sequence with the plurality of first optical layers, each second optical layer comprising a copolymer of polymethyl methacrylate that contains comonomer units that depress a glass transition temperature of the copolymer below a glass transition temperature of the polyester of the first optical layers;
the optical body being configured and arranged to reflect at least a portion of light over at least one wavelength region.
0 Assignments
0 Petitions
Accused Products
Abstract
Optical bodies, comprising: a plurality of first optical layers comprising a first polymer composition that comprises (i) a polyester portion having terephthalate comonomer units and ethylene glycol comonomer units; and (ii) a second portion corresponding to a polymer having a glass transition temperature of at least about 130° C.; and a plurality of second optical layers disposed in a repeating sequence with the plurality of first optical layers. Also disclosed are optical bodies comprising: (a) a plurality of first optical layers, each first optical layer being oriented; and (b) a plurality of second optical layers, disposed in a repeating sequence with the plurality of first optical layers, comprising a blend of polymethylmethacrylate and polyvinylidene fluoride. Methods of making the above-described optical bodies, and articles employing such optical bodies are also provided.
-
Citations
20 Claims
-
1. An optical body, comprising:
-
a plurality of first optical layers, each first optical layer being oriented and comprising a polyester having terephthalate comonomer units and ethylene glycol comonomer units; and
a plurality of second optical layers disposed in a repeating sequence with the plurality of first optical layers, each second optical layer comprising a copolymer of polymethyl methacrylate that contains comonomer units that depress a glass transition temperature of the copolymer below a glass transition temperature of the polyester of the first optical layers;
the optical body being configured and arranged to reflect at least a portion of light over at least one wavelength region. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
-
-
12. An article, comprising:
a mirror comprising a plurality of first optical layers, each first optical layer being oriented and comprising a polyester having terephthalate comonomer units and ethylene glycol comonomer units, and a plurality of second optical layers disposed in a repeating sequence with the plurality of first optical layers, each second optical layer comprising a copolymer of polymethyl methacrylate that contains comonomer units that depress a glass transition temperature of the copolymer below a glass transition temperature of the polyester of the first optical layers, the mirror being configured and arranged to reflect at least a portion of light over at least one wavelength region. - View Dependent Claims (13, 14, 15)
-
16. An article, comprising:
-
a light source; and
an optical body disposed to receive light from the light source, the optical body comprising a plurality of first optical layers, each first optical layer being oriented and comprising a polyester having terephthalate comonomer units and ethylene glycol comonomer units, and a plurality of second optical layers disposed in a repeating sequence with the plurality of first optical layers, each second optical layer comprising a copolymer of polymethyl methacrylate that contains comonomer units that depress a glass transition temperature of the copolymer below a glass transition temperature of the polyester of the first optical layers, the optical body being configured and arranged to reflect at least a portion of light over at least one wavelength region. - View Dependent Claims (17, 18, 19, 20)
-
Specification