Optical devices according to the present invention include a multilayer optical film in which at least one of the layers comprises an oriented birefringent polymer. The multilayer optical film exhibits low absorptivity and can reflect light approaching at shallow angles as well as normal to the film
Optical devices according to the present invention include a multilayer optical film in which at least one of the layers comprises an oriented birefringent polymer. The multilayer optical film exhibits low absorptivity and can reflect light approaching at shallow angles as well as normal to the film.
대표청구항▼
1. An optical device comprising opposing optical surfaces arranged to form a wedge, at least a portion of the opposing optical surfaces comprising a multilayer optical film that comprises alternating layers of at least two materials, wherein the multilayer optical film reflects light over a waveleng
1. An optical device comprising opposing optical surfaces arranged to form a wedge, at least a portion of the opposing optical surfaces comprising a multilayer optical film that comprises alternating layers of at least two materials, wherein the multilayer optical film reflects light over a wavelength band of interest as a function of thicknesses of the alternating layers, and further wherein at least one of the materials has a stress induced birefringence.2. An optical device comprising opposing optical surfaces arranged to form a wedge, at least a portion of the opposing optical surfaces comprising a multilayer optical film that comprises alternating layers of at least two materials, and further wherein at least one of the materials has a stress induced birefringence, wherein the multilayer optical film comprises alternating first and second polymeric materials, wherein the absolute value of the difference in index of refraction between the first and second polymeric material is Δnx along a first axis in the plane of the film and is Δnz along a second axis orthogonal to the plane of the film, and wherein the ratio Δnz/Δnx is less than 0.5.3. An optical device comprising opposing optical surfaces arranged to form a wedge, at least a portion of the opposing optical surfaces comprising a multilayer optical film that comprises alternating layers of at least two materials, and further wherein at least one of the materials has a stress induced birefringence, wherein the multilayer optical film comprises alternating first and second polymeric materials, wherein the absolute value of the difference in index of refraction between the first and second polymeric material is Δnx along an in-plane direction of the film and is Δnz along a thickness direction of the film, end wherein Δnx is at least 0.05 and Δnz is less than Δnx.4. The optical device of claim 1, wherein the multilayer optical film comprises alternating first and second polymeric materials, wherein the first polymeric material is birefringent and the second polymeric material is isotropic.5. The optical device of either of claim 1 or 2, wherein the multilayer optical film is a mirror.6. The optical device of either of claim 1 or 2, wherein the optical device is hollow.7. The optical device of either of claim 1 or 2, wherein the opposing optical surfaces form a cone.8. The optical device of either of claim 1 or 2, wherein the opposing optical surfaces form a parabola.9. The optical device of either of claim 1 or 2, wherein the opposing optical surfaces are portions of a continuous surface.10. The optical device of either of claim 1 or 2, wherein the optical device is suitable for receiving solar illumination.11. An optical device comprising opposing optical surfaces arranged to form a light pipe, at least a portion of the opposing optical surfaces comprising a multilayer optical film that comprises alternating layers of at least two materials, wherein the multilayer optical film reflects light over a wavelength band of interest as a function of thicknesses of the alternating layers, and further wherein at least one of the materials has a stress induced birefringence.12. An optical device comprising opposing optical surfaces arranged to form a light pipe, at least a portion of the opposing optical surfaces comprising a multilayer optical film that comprises alternating layers of at least two materials, and further wherein at least one of the materials has a stress induced birefringence, wherein the multilayer optical film comprises alternating first and second polymeric materials, wherein the absolute value of the difference in index of refraction between the first and second polymeric material is Δnx along a first axis in the plane of the film and is Δnz along a second axis orthogonal to the plane of the film, and wherein the ratio Δnz/Δnx is less than 0.5.13. An optical device comprising opposing optical surfaces arranged to form a light pipe, at least a portion of the opposing optical surfaces comprising a multilayer optical film that comprises alternating layers of at least two materials, and further wherein at least one of the materials has a stress induced birefringence, wherein the multilayer optical film comprises alternating first and second polymeric materials, wherein the absolute value of the difference in index of refraction between the first and second polymeric material is Δnx along an in-plane direction of the film and is Δnz along a thickness direction of the film, and wherein Δnx is at least 0.05 and Δnz is less than Δnx.14. The optical device of claim 11, wherein the multilayer optical film comprises alternating first and second polymeric materials, wherein the first polymeric material is birefringent and the second polymeric material is isotropic.15. The optical device of either of claim 11 or 12, wherein the multilayer optical film is a mirror.16. The optical device of either of claim 11 or 12, wherein the optical device is hollow.17. The optical device of either of claim 11 or 12, wherein the opposing optical surfaces are portions of a continuous surface.18. The optical device of either of claim 11 or 12, wherein the optical device has a circular cross-sectional shape.19. The optical device of either of claim 11 or 12, wherein the optical device has a cross-sectional shape selected from the group consisting of ellipses and closed irregular curves.20. The optical device of either of claim 11 or 12, wherein the optical device has a cross-sectional shape selected from the group consisting of triangles, squares, rectangles, and other polygonal shapes.
Melendy Peter S. (3 Merrill Industrial Dr. Hampton NH 03842) Fitzmeyer Dennis J. (3 Merrill Industrial Dr. Hampton NH 03842), Adhesive composition with decorative glitter.
Arego Douglas A. (Spring TX) Hathaway Kevin J. (Menlo Park CA) Knox ; Jr. Richard M. (Houston TX) Kornfuehrer Gaylon R. (Cypress TX), Backlighting system with faceted light pipes.
Ramanathan Ravi (Midland MI) Schrenk Walter J. (Midland MI) Wheatley John A. (Midland MI), Coextrusion of multilayer articles using protective boundary layers and apparatus therefor.
Weber, Michael F.; Nevitt, Timothy J.; Merrill, William W.; Roscoe, Kelly M.; Ouderkirk, Andrew J.; Wheatley, John A.; Hanson, Gary B.; Jonza, James M.; Boettcher, Jeffrey A.; Liu, Yaoqi J.; Neavin, , Color shifting film.
Cobb ; Jr. Sanford ; Cull Brian D. ; Ouderkirk Andrew J. ; Weber Michael F. ; Wortman David L., Diffusely reflecting multilayer polarizers and mirrors.
Ouderkirk Andrew J. ; Carlson Lockwood W. ; Kotz Arthur L. ; Nevitt Timothy J. ; Stover Carl A. ; Weber Michael F. ; Allen Richard C. ; Majumdar Biswaroop, Diffusely reflecting polarizing element including a first birefringent phase and a second phase.
Schrenk Walter J. (Midland MI) Arends Charles B. (Midland MI) Balazs Conrad F. (Midland MI) Lewis Ray A. (Midland MI) Wheatley John A. (Midland MI), Formable reflective multilayer body.
Schrenk Walter J. (Midland MI) Arends Charles B. (Midland MI) Balazs Conrad F. (Midland MI) Lewis Ray A. (Midland MI) Wheatley John A. (Midland MI), Formable reflective multilayer body.
Kalmanash Michael H. (Los Altos CA), High efficiency chiral nematic liquid crystal rear polarizer for liquid crystal displays having a notch polarization ban.
Schrenk Walter J. (Midland MI) Shastri Ranganath K. (Midland MI) Ayres Ralph F. (Midland MI) Gosen Daniel J. (Saginaw MI), Interfacial surface generator.
Lewis Ray A. (Midland MI) Wisniewski David M. (Midland MI) Ramanathan Ravi (Midland MI) Schrenk Walter J. (Midland MI), Layer thickness gradient control in multilayer polymeric bodies.
Fnfschilling Jrg (Basel CHX) Schadt Martin (Seltisberg CHX), Light control systems with a circular polarizer and a twisted nematic liquid crystal having a minimum path difference of.
Huss Charles P. (Stillwater MN) Fry Arthur L. (Maplewood MN) Leseman Steven R. (Lexington MN), Method and apparatus for forming prefabricated self-forming self-adhering pull bow and pull bow formed thereby.
Ouderkirk Andrew J. ; Carlson Lockwood W. ; Kotz Arthur L. ; Nevitt Timothy J. ; Stover Carl A. ; Weber Michael F. ; Allen Richard C. ; Majumdar Biswaroop, Method for making an optical film.
Schrenk Walter J. (Midland) Shastri Ranganath K. (Midland) Roehrs Herbert C. (Beaverton) Ayres Ralph E. (Midland MI), Method for producing injection molded multilayer articles.
Schrenk Walter J. (Midland MI) Shastri Ranganath K. (Midland MI) Ayres Ralph E. (Midland MI) Gosen Daniel J. (Saginaw MI), Methods and apparatus for generating interfacial surfaces.
Wheatley John A. (Midland MI) Schrenk Walter J. (Midland MI), Multilayer film indicator for determining the integrity or authenticity of an item and process for using same.
Wheatley John A. (Midland MI) Schrenk Walter J. (Midland MI) Wisniewski David M. (Freeland MI), Multilayer polymeric reflective bodies for decorative and security applications.
Rogers Howard G. (Weston MA) Bilofsky Ruth C. (Lexington MA) Gaudiana Russell A. (Merrimack NH) Sahatjian Ronald A. (Lexington MA), Optical device including birefringent aromatic amino carboxylic acid polymer.
Rogers Howard G. (Weston MA) Bilofsky Ruth C. (Lexington MA) Gaudiana Russell A. (Merrimack NH) Sahatjian Ronald A. (Lexington MA), Optical device including birefringent polyhydrazide polymer.
Rogers Howard G. (Weston MA) Bilofsky Ruth C. (Lexington MA) Gaudiana Russell (Merrimack NH) Sahatjian Ronald A. (Lexington MA), Optical device including birefringent polymer.
Rogers Howard G. (Weston MA) Bilofsky Ruth C. (Lexington MA) Gaudiana Russell A. (Merrimack NH) Sahatjian Ronald A. (Lexington MA), Optical device including birefringent polymer.
Weber Michael F. (Shoreview MN) Ouderkirk Andrew J. (Woodbury MN) Aastuen David J. W. (Farmington MN), Optical panel capable of switching between reflective and transmissive states.
Wheatley John A. (Midland MI) Schrenk Walter J. (Midland MI) Bales Stephen E. (Midland MI) Barger Mark A. (Midland MI) Langhoff Charles A. (Midland MI) Ramanathan Ravi (Midland MI), Optically dissimilar composition for polymeric reflective bodies.
Phillips Roger W. (Santa Rosa CA) Coombs Paul G. (Santa Rosa CA) Higgins Patrick K. (Windsor CA) Markantes Charles T. (Santa Rosa CA), Polymeric sheet having oriented multilayer interference thin film flakes therein, product using the same and method.
Weber Michael F. ; Cull Brian D. ; Hoffman Kevin M. ; Ouderkirk Andrew J., Reflective polarizers having extended red band edge for controlled off axis color.
Yang Kei-Wean C. (Beaverton OR), STN displays having high contrast, with purple polarizer and residual birefringence causing greenish-gold or purplish-bl.
Revol Jean-Franois (Montreal CAX) Godbout Donat L. (Outremont CAX) Gray Derek G. (Montreal West CAX), Solidified liquid crystals of cellulose with optically variable properties.
Winston Roland (Chicago IL) Holman Robert L. (Naperville IL) Jacobson Benjamin A. (Chicago IL) Emmons Robert M. (Rolling Meadows IL) Gleckman Philip (Irvine CA), Tapered multilayer luminaire devices.
Winston Roland (Chicago IL) Jacobson Benjamin A. (Chicago IL) Holman Robert L. (Naperville IL) Gitkind Neil A. (Chicago IL), Tapered multilayer luminaire devices.
Sitzema Ronald L. (Ellsworth MI) Troppman Dale A. (Charlevoix MI) Motter Gregg A. (Midland MI), Transflection reflector having controlled reflected and transmitted light distribution.
Arends Charles B. (Midland MI) Schrenk Walter J. (Midland MI) Lewis Ray A. (Midland MI) Ramanathan Ravi (Midland MI) Wheatley John (Midland MI), Two component infrared reflecting film.
Broekhuis, Michael D.; Byker, Harlan J.; Millett, Frederick A., Enhanced thermochromic window which incorporates a film with multiple layers of alternating refractive index.
Haag, Adam D.; Edmonds, William F.; Petaja, Jason S.; Nelson, Eric W.; Kolb, William Blake; Hao, Encai; Lu, Fei; Free, Michael Benton, Gradient low index article and method.
Eckhardt, Stephen K.; Carpenter, Barry S.; Ender, David A.; Lundin, David J.; Napierala, Mark E.; Sahlin, Jennifer J.; Slama, David F.; Vick, Karl A.; Wheatley, John A., Light assembly.
Eckhardt, Stephen K.; Carpenter, Barry S.; Ender, David A.; Lundin, David J.; Napierala, Mark E.; Sahlin, Jennifer J.; Slama, David F.; Vick, Karl A.; Wheatley, John A., Light assembly.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.