Patent application number | Description | Published |
20110042591 | METHOD AND DEVICE FOR READING REPRODUCED IMAGE - A first bar code that is reproduced by linearly polarized red light (first read light) parallel to a short-side direction and a second bar code that is reproduced by linearly polarized green light (second read light) parallel to a long-side direction are recorded on a birefringence label. A probe is a reading device that reads the first and second bar codes from the birefringence label and includes first and second light sources and an imaging unit. The first light source emits the first read light to the birefringence label. The second light source emits the second read light to the birefringence label at a time different from that of the first read light. The imaging unit captures the birefringence label through a polarizing plate having a transmission axis aligned with the short-side direction of the birefringence label, and acquires reproduced images of the first and second bar codes. | 02-24-2011 |
20140185000 | PRODUCT HAVING LATENT IMAGE - The present invention provides a product comprising a patterned optically anisotropic layer having two or more regions of different birefringence, which has a latent image becoming visible through a polarizing plate, wherein an image visible through the polarizing plate including the latent image comprises a periodic structure. An additional visual effect can be attached to the latent image observed through a polarizing plate. | 07-03-2014 |
20140198384 | VARIABLE COLOR DISPLAY METHOD USING RETARDATION FILM - The present invention provides a method of displaying, in color, information accompanying rotation in a device having a rotating member, comprising disposing a first polarizing film, a printed film, a retardation film, and a second polarizing film approximately perpendicularly to the direction of the rotational axis of the rotation; with the first polarizing film, retardation film, and second polarizing film being the sequence of disposition; and with one or two films selected from among the first polarizing film, the retardation film, and the second polarizing film being caused to rotate in a manner accompanying rotation of the rotating member. The method of the present invention affords inexpensive installation, maintenance, and use; good energy efficiency; and complex color display in a greater number of colors. | 07-17-2014 |
Patent application number | Description | Published |
20080259268 | PROCESS OF PRODUCING SUBSTRATE FOR LIQUID CRYSTAL DISPLAY DEVICE - A process of producing a substrate for liquid crystal display device comprising an optically anisotropic layer, which comprises forming the optically anisotropic layer by a process comprising the following [1] to [3]: | 10-23-2008 |
20090273741 | OPTICAL MATERIAL HAVING A COLORED OPTICALLY ANISOTROPIC LAYER - An optical material including a colored optically anisotropic layer, the colored optically anisotropic layer having at least one maximum absorption wavelength with a nonpolarized light transmittance of 30 percent or lower in a wavelength range of 430 to 700 nm, wherein the absorbance Amax at the polarization of maximum absorbance and the absorbance Amin at the polarization of minimum absorbance of the colored optically anisotropic layer satisfy the following relation at the maximum absorption wavelength: 1.0≦Amax/Amin≦1.4, and the in-plane retardation of the colored optically anisotropic layer is greater than or equal to 10 nm and less than 1,000 nm, which can be employed as a material for forming a color filter having optical compensation capability. | 11-05-2009 |
20090291272 | BIREFRINGENT PATTERN BUILDER AND LAMINATED STRUCTURE MATERIAL FOR PREVENTING FORGERY - A birefringent pattern builder, having an optically anisotropic layer containing a polymer having unreacted reactive groups, | 11-26-2009 |
20090310195 | MEDIUM FOR PREVENTING FORGERY - A medium for preventing forgery having a hologram layer and at least one patterned optically anisotropic layer,
| 12-17-2009 |
20100047478 | POLYMERIZABLE LIQUID CRYSTAL COMPOUND, PHASE DIFFERENCE FILM AND LIQUID CRYSTAL DISPLAY USING THE SAME - A polymerizable liquid crystal compound is represented by the following formula (1): | 02-25-2010 |
20100302636 | VIEWER AND KIT FOR AUTHENTICATING BIREFRINGENT PATTERN, AUTHENTICITY-VERIFYING MEDIUM AND METHOD OF VERIFYING AUTHENTICITY - A viewer for authenticating a birefringent pattern having at least two regions having a different birefringence from each other, wherein the viewer contains a polarizing plate and at least one optically anisotropic layer laminated on the polarizing plate, a front retardation of the at least one optically anisotropic layer is 5 nm or more and the total of the front retardation of the at least one optically anisotropic layer and a maximum value of front retardation of the birefringent pattern is greater than λ/2. | 12-02-2010 |
20110025973 | METHOD OF PRODUCING PATTERNED BIREFRINGENT PRODUCT AND BIREFRINGENT PATTERN BUILDING MATERIAL - A method of producing a patterned birefringent product, comprising at least steps [1] to [3] in this order:
| 02-03-2011 |
20110117295 | OPTICALLY ANISOTOPIC FILM, PROCESS FOR PRODUCING OPTICALLY ANISOTOPIC FILM, SUBSTRATE FOR LIQUID CRYSTAL CELL, AND LIQUID CRYSTAL DISPLAY DEVICE - A novel optically anisotropic film useful for optical compensation of a liquid crystal display device is provided. The optically anisotropic film has a distorted twisted spiral structure, which is formed from a liquid-crystalline composition comprising a liquid-crystalline compound and at least one optically active compound the torsional force of which is changed by light. The optically anisotropic film is produced, for example by ( | 05-19-2011 |
Patent application number | Description | Published |
20090174941 | OPTICAL DEVICE - There is provided an optical device including a plurality of first phasors having substantially the same phase delaying axis as each other; and a plurality of second phasors having substantially the same phase delaying axis as each other in a direction different from that of the first phasors and providing a phase difference substantially the same as that provided by the first phasors, in which the plurality of first phasors and the plurality of second phasors are arranged on substantially the same face, a density of the first phasors is substantially the same as a density of the second phasors, and a spatial distribution of the density of the first phasors and a spatial distribution of the density of the second phasors are substantially uniform. | 07-09-2009 |
20090179143 | IMAGE CAPTURING DEVICE - An image capturing device includes a lens system including a plurality of regions on a pupil plane that each have different focal distances, a plurality of first polarizing elements that respectively transmit differently polarized light and respectively transmit light passing through the plurality of regions, a plurality of second polarizing elements that respectively transmit polarized light transmitted through the plurality of first polarizing elements, and a plurality of light receiving elements that respectively receive light transmitted through the plurality of second polarizing elements. | 07-16-2009 |
20090190200 | OPTICAL DEVICE AND OPTICAL SYSTEM - There is provided an optical device including a plurality of polarizers that are arranged along a propagation direction of incident light, where the plurality of polarizers have transmission axes of substantially the same direction, a phaser that is provided between the plurality of polarizers, where the phaser has a retarded-phase axis forming a predetermined angle with the transmission axes of the plurality of polarizers, and a phase modulator that is provided adjacent to the phaser along the propagation direction, where the phase modulator has a retarded-phase axis of substantially the same direction as the retarded-phase axis of the phaser. Here, a phase difference generated in the incident light by the phase modulator is temporally adjusted such that the optical device transmits light in different wavelength ranges at different timings. | 07-30-2009 |
20090206240 | OPTICAL DEVICE AND OPTICAL SYSTEM - Provided is an optical device, comprising a plurality of polarizers that are arranged along a propagation direction of incident light; a first phase element that is disposed between the plurality of polarizers and that has a phase lag axis forming a prescribed angle relative to transmission axes of the polarizers arranged along the propagation direction; and a second phase element that is disposed between the first phase element and one of the polarizers arranged along the propagation direction, and that provides the incident light with a prescribed phase difference. An angle of the phase lag axis of the second phase element is adjusted such that the optical device transmits light in a prescribed wavelength region in the incident light. | 08-20-2009 |