Patent application number | Description | Published |
20080239216 | Optical device, labeled article, optical kit and discrimination method - Increased is the variety of changes of an image in accordance with observation conditions displayed on an optical device including a solidified liquid crystal material. An optical device includes a layered structure including a recess-forming layer with light-transmitting property, a main surface of which includes one or more recess-forming regions each provided with first grooves equal in longitudinal directions to one another and adjacent to one another in a direction crossing the longitudinal directions, and a liquid crystal layer supported by the main surface and made of a solidified liquid crystal material, and a reflection layer facing the layered structure. | 10-02-2008 |
20080253258 | Information recording medium and method of reading information from information recording medium, and image detection apparatus - In an information recording medium according to the present invention, in which an information recording medium has diffraction grating cells arranged therein, a plurality of types of the diffraction grating cells make up one information recording area. At least one type of the diffraction grating cells included in the diffraction grating cells making up the information recording area are information recording elements, while the other types of the diffraction grating cells included in the diffraction grating cells making up the information recording area are information hiding elements. The information is recorded by two-dimensional arrangement of the diffraction grating cells constituting the information recording elements in the information recording area. | 10-16-2008 |
20080272883 | Display and labeled article - A higher forgery prevention effect is realized. A display includes a first interface section provided with a relief-type diffraction grating constituted by a plurality of grooves, and a second interface section provided with a plurality of recesses or projections arranged two-dimensionally at a center-to-center distance smaller than the minimum center-to-center distance of the plural grooves, and each having a forward tapered shape. | 11-06-2008 |
20100071237 | Display and labeled article - [Problems] A higher forgery prevention effect is realized. | 03-25-2010 |
20100080938 | Display and information-printed matter - A display includes a substrate with a light-transmitting property, a relief structure-forming layer disposed on at least one surface of the substrate and including a relief-structured region on a surface thereof opposite to its surface in contact with the substrate, a light-reflecting layer disposed on the surface of the relief structure-forming layer including the relief-structured region, and a printed layer formed on a surface of the substrate opposite to the surface on which the relief structure-forming layer is disposed, or between the relief structure-forming layer and the light-reflecting layer, or on a side of the light-reflecting layer opposite to its surface in contact with the relief structure-forming layer. The relief-structured region is constituted by recessed or protruding portions arranged two-dimensionally, has low reflectivity and low diffusibility under a normal illumination condition, and exhibits a diffracted light-emitting property under a specific condition. | 04-01-2010 |
20100254007 | Display and labeled article - A display includes light-scattering regions. Each of the light-scattering regions is provided with linear protrusions and/or recesses having the same longitudinal direction. The light-scattering regions are different from each other in the longitudinal direction. | 10-07-2010 |
20120127547 | IMAGE DISPLAY AND LABELED ARTICLE - An image display according to an embodiment includes a first image-displaying portion that displays first information about a certain object as a first image of object color, and a second image-displaying portion that displays second information about the object as a second image of structural color provided by a relief structure, the relief structure including at least one structure selected from the group consisting of diffraction grating, hologram, and light-scattering structure having an anisotropic light-scattering property. According to an example, the object is a person, and the first image includes a facial image of the person. A labeled article according to another embodiment includes the image display, and a substrate supporting the image display. | 05-24-2012 |
20140293424 | INFORMATION RECORDING MEDIUM AND METHOD OF READING INFORMATION RECORDING MEDIUM, AND IMAGE DETECTION APPARATUS - In an information recording medium, in which an information recording medium has diffraction grating cells arranged therein, a plurality of types of the diffraction grating cells make up one information recording area. At least one type of the diffraction grating cells included in the diffraction grating cells making up the information recording area are information recording elements, while the other types of the diffraction grating cells included in the diffraction grating cells making up the information recording area are information hiding elements. The information is recorded by two-dimensional arrangement of the diffraction grating cells constituting the information recording elements in the information recording area. | 10-02-2014 |