Infrared reflective optical interference film
First Claim
1. An optical interference film which reflects light in the infrared region of the spectrum while transmitting light in the visible region of the spectrum comprising multiple alternating layers of at least first, second, and third "diverse", substantially transparent polymeric materials A, B, and C, each of said layers being of an optical thickness of between about 0.09 and 0.45 micrometers and each of said polymeric materials having a different index of refraction, ni, and wherein the refractive index of said second polymeric material is intermediate the respective refractive indices of said first and third polymeric materials.
2 Assignments
0 Petitions
Accused Products
Abstract
The present invention provides an optical interference film, made of multiple layers of polymers, which reflects wavelengths of light in the infrared region of the spectrum while being substantially transparent to wavelengths of light in the visible spectrum. The optical interference film includes multiple alternating layers of at least first, second, and third diverse, substantially transparent polymeric materials A, B, and C, with the layers being of an optical thickness of between about 0.09 and 0.45 micrometers. Each of the polymeric materials has a different index of refraction, ni, and the refractive index of the second polymeric material is intermediate the respective refractive indices of the first and third polymeric materials.
-
Citations
20 Claims
- 1. An optical interference film which reflects light in the infrared region of the spectrum while transmitting light in the visible region of the spectrum comprising multiple alternating layers of at least first, second, and third "diverse", substantially transparent polymeric materials A, B, and C, each of said layers being of an optical thickness of between about 0.09 and 0.45 micrometers and each of said polymeric materials having a different index of refraction, ni, and wherein the refractive index of said second polymeric material is intermediate the respective refractive indices of said first and third polymeric materials.
- 16. A laminate comprising an optical interference film which reflects light in the infrared region of the spectrum while transmitting light in the visible region of the spectrum, including multiple alternating layers of at least first, second, and third diverse, substantially transparent polymeric materials A, B, and C, said layers being of an optical thickness of between about 0.09 and 0.45 micrometers and each of said polymeric materials having a different index of refraction, ni, and wherein the refractive index of said second polymeric material is intermediate the respective refractive indices of said first and third polymeric materials, laminated to a glass substrate.
- 18. A laminate comprising an optical interference film which reflects light in the infrared region of the spectrum while transmitting light in the visible region of the spectrum, including multiple alternating layers of at least first, second, and third diverse, substantially transparent polymeric materials A, B, and C, said layers being of an optical thickness of between about 0.09 and 0.45 micrometers and each of said polymeric materials having a different index of refraction, ni, and wherein the refractive index of said second polymeric material is intermediate the respective refractive indices of said first and third polymeric materials, laminated to a polymeric resin substrate.
Specification