Class / Patent application number | Description | Number of patent applications / Date published |
359489150 | Plural birefringent elements | 8 |
20110261457 | OPTICAL DEVICE CONFIGURED BY BONDING FIRST AND SECOND TRANSPARENT MEMBERS HAVING BIREFRINGENT PROPERTY - An optical device obtained by bonding a first transparent member having a birefringent property to a second transparent member having a birefringent property. A dielectric multilayer film having no influence on the transmittance of light is formed on at least one of the bonding surfaces of the first and second transparent members. The bonding surface of the first transparent member is bonded through the dielectric multilayer film to the bonding surface of the second transparent member by optical contact. | 10-27-2011 |
20110286095 | MULTILAYER OPTICAL FILMS HAVING SIDE-BY-SIDE POLARIZER/POLARIZER ZONES - A reflective film includes interior layers that selectively reflect light by constructive or destructive interference, the layers extending from a first to a second zone of the film. In the first zone the layers provide a first reflective polarizer characteristic, and in a second zone the layers provide a substantially different reflective polarizer characteristic. The second zone is characterized by at least some of the layers having a reduced birefringence relative to their birefringence in the first zone. In some cases the first reflective polarizer characteristic may have a pass axis that is substantially orthogonal to that of the second reflective polarizer characteristic. The film may have substantially the same thickness in the first and second zones, or a substantially reduced thickness in the second zone relative to the first zone. | 11-24-2011 |
20120140324 | HYBRID POLARIZER - A hybrid polarizer includes an absorbing element having a first major surface and a second major surface. The hybrid polarizer also includes a first birefringent reflective polarizer disposed on the first major surface of the absorbing element, the first birefringent reflective polarizer having a first pass axis and a first block axis. The hybrid polarizer further includes a second birefringent reflective polarizer disposed on the second major surface of the absorbing element, the second reflective polarizer having a second pass axis and a second block axis. | 06-07-2012 |
20120170118 | NEGATIVELY BIREFRINGENT POLYESTERS AND OPTICAL FILMS - Presently described are multilayer optical films, oriented polyester films, negatively birefringent copolyester polymers, fluorene monomers, and polyester polymers prepared from such fluorene monomers. In one embodiment, the multilayer optical film comprises at least one first birefringent optical layer; and at least one second optical layer having a lower birefringence than the first optical layer; wherein at least one of the optical layers comprises a negatively birefringent polyester polymer comprising a backbone and repeat units comprising at least one pendent aromatic group that is conformationally locked relative to the backbone. | 07-05-2012 |
20220137278 | OPTICAL ELEMENT HAVING MULTIPLE LAYERS FOR REDUCING DIFFRACTION ARTIFACTS - An optical element includes a first birefringent medium layer with orientations of directors of first optically anisotropic molecules spatially varying with a first in-plane pitch and a first vertical pitch. The optical element also includes a second birefringent medium layer with orientations of directors of second optically anisotropic molecules spatially varying with a second in-plane pitch and a second vertical pitch. The second birefringent medium layer is optically coupled with the first birefringent medium layer and configured to reduce a diffraction of a light by the first birefringent medium layer. The first in-plane pitch is substantially the same as the second in-plane pitch, and the second vertical pitch is smaller than the first vertical pitch. | 05-05-2022 |
359489190 | Frequency filter or interference effects | 3 |
20110249334 | INTERNALLY PATTERNED MULTILAYER OPTICAL FILMS WITH MULTIPLE BIREFRINGENT LAYERS - A reflective film includes interior layers that selectively reflect light by constructive or destructive interference, the layers extending from a first to a second zone of the film. The interior layers include a first set of layers composed of a first material and a second set of layers composed of a different second material. The first and second sets of layers are both birefringent in the first zone, but at least some of the layers have reduced birefringence in the second zone. The reduced birefringence produces a second reflective characteristic in the second zone that differs from a first reflective characteristic in the first zone, this difference not being substantially attributable to any thickness difference between the first and second zones. The film may also incorporate absorbing agents to assist in the manufacture or processing of the film. Related methods and articles are also disclosed. | 10-13-2011 |
20120105957 | POST-FORMABLE MULTILAYER OPTICAL FILMS AND METHODS OF FORMING - Articles including post-formed multilayer optical films with layers of at least one strain-induced birefringent material, methods of manufacturing such articles by post-forming multilayer optical films, and multilayer optical films that are particularly well-suited to post-forming operations are disclosed. The articles, methods and multilayer optical films of the present invention allow for post-forming of multilayer optical films including strain-induced index of refraction differentials while retaining the desired optical properties of the multilayer optical films. | 05-03-2012 |
20130077165 | VEHICLE DISPLAY MIRROR AND METHOD OF MANUFACTURING THE SAME - A vehicle display mirror includes a light-polarizing reflection unit and an image display unit. The light-polarizing reflection unit includes at least one multilayer reflector composed of a plurality of inter-stacked polymer films, and at least one of the inter-stacked polymer films is a birefringence material layer that conforms to the condition of NX≠NY≠NZ, wherein NX is the index of refraction of light at X direction, NY is the index of refraction of light at Y direction, and NZ is the index of refraction of light at Z direction. The image display unit includes at least one image display screen, and the multilayer reflector is disposed on the image display screen, thus the vehicle display mirror of the instant disclosure can be used as a rear-view mirror of the vehicle and provide a clear displayed screen for user in the vehicle. | 03-28-2013 |