Abstract:
A curved surface element, for example a light bulb (16), ornament, or light pipe, has at least a portion thereof on its inner or outer surface (20) covered with a diffraction grating, for example, a holographic diffraction grating or mechanical diffraction grating, whereby such diffraction grating diffracts light to emit color to the observer. The diffraction grating can take the form of a holographic optical element (HOE) attached to the curved surface or a diffractive holographic optical pattern (HOP) embossed into the curved surface.
Abstract:
Holograms (42) are formed in moldable materials of varied shapes and curvatures utilizing injection molding and the like. Instead of the conventional metallizing, there can be sprayed on flakes of highly specular metal made by breaking up a thin coating of metal metallized by conventional metallizing on a removable support. Hologram (42) on one surface of a molding that has a 100 % mirror on an opposing surface, is suitable for cosmetic compact case covers (40) or the like. Holograms (42) can also be applied to digital compact audio discs or video discs.
Abstract:
Process for producing a hologram reproducing the image of at least one object. Said process is characterized in that a first recording is made of the image of said object on at least one first holographic recording material (40) in order to obtain a holographic image of said object, followed by developing this first holographic recording material, making a second recording from said holographic image on a second holographic recording material (60) shaped to present at least one concave part turned towards the first holographic recording material (40), whereby at least one part of said image must be located in the space defined by the two holographic recording materials. The first and second holographic recording materials are combined in such a way that the distance (d) separating them during the second recording is variable. Said second holographic recording material is developed and then used in the same configuration in order to play back the image (102) of the object.
Abstract:
An improved hologram display panel for a vehicle. Sensors can monitor the operating characteristics of the vehicle and virtual images of indicators can be realized by the illumination of holographic images that are contained in substantially transparent hologram members laminated to the surface of the windshield. The holographic images are virtual image displays that can appear offset from the windshield to accommodate the vision of the driver.
Abstract:
Systems, articles, and methods that integrate photopolymer film with eyeglass lenses are described. One or more hologram(s) may be recorded into/onto the photopolymer film to enable the lens to be used as a transparent holographic combiner in a wearable heads-up display employing an image source, such as a microdisplay or a scanning laser projector. The methods of integrating photopolymer film with eyeglass lenses include: positioning photopolymer film in a lens mold and casting the lens around the photopolymer film; sandwiching photopolymer film in between two portions of a lens; applying photopolymer film to a concave surface of a lens; and/or affixing a planar carrier (with photopolymer film thereon) to two points across a length of a concave surface of a lens. Respective lenses manufactured/adapted by each of these processes are also described.
Abstract:
We describe a window assembly comprising: a window pane comprising a glass or plastic sheet; and a layer of holographic recording medium attached to said glass or plastic sheet; wherein said layer of holographic recording medium has recorded within the medium a volume hologram configured to direct light incident onto said glass or plastic sheet to propagate within a thickness of said glass or plastic sheet. In embodiments the volume hologram is fabricated by recording a transmission hologram and shrinking the recorded hologram to convert the transmission hologram to an edge- directing hologram configured to direct light in a direction to be totally internally reflected within the window pane, for example at greater than 40°, 50°, 60°, 70°, 75° or 80° to a normal to the surface of the hologram.
Abstract:
The present invention relates to an appliance having a micro-pattern (190b) for displaying a pattern or a character, and a method for fabricating a structure having a micro-pattern (190b), and more particularly, to a method for displaying a pattern or a character more effectively. To achieve above object, the appliance of the present invention includes a body, a structure provided to an outside or an inside of the body, and a micro-pattern (190b) for changing a light incident thereon from an outside of the micro-pattern to a light of a predetermined color to display a predetermined character or a predetermined pattern on the structure.
Abstract:
A method of making a product containing a hologram which has at least two replay colours when viewed at a given replay angle, the method comprises the steps of : (i) recording (Fig. 3) holographic records at multiple recording angles (A, B) in a master (master shim); and (ii) copying (Fig. 1) the master (master shim) using multiple angles of master reconstruction to make the hologram (light sensitive film).
Abstract:
A surface microstructure is superimposed on the surface of a replication mould such as an injection moulding tool insert by laser interference exposure of a mask pattern and etching or electroplating the additional microstructure. The technique enables the post-processing of planar and non-planar replication moulds with additional microstructure to improve the functionality and value of the moulded components. A major area of application is an anti-reflection surface for injection moulded polymer optical components, achieved by the superposition of submicrometer anti-reflection grating structure onto injection moulding tool inserts.