Disclosed is a decorative object including an upper glass, a lower glass, a recessed pattern formed in the lower glass and facing the upper glass, a liquid filling the recessed pattern, the refractive index of the liquid being equal to that of the lower glass or differing from that of the lower glass by at most 10%, and solid elements which can move in the liquid.

A cover for an electronic device and methods of forming a cover is disclosed. The electronic device may include a housing, and a cover coupled to the housing. The cover may have an inner surface having at least one of an intermediate polish and a final polish, a groove formed on the inner surface, and an outer surface positioned opposite the inner surface. The outer surface may have at least one of the intermediate polish and the final polish. The cover may also have a rounded perimeter portion formed between the inner surface and the outer surface. The rounded perimeter portion may be positioned adjacent the groove. The method for forming the cover may include performing a first polishing process on the sapphire component using a polishing tool, and performing a second polishing process on the groove of the sapphire component forming the cover using blasting media.

A method for marking a product (1) with a photoluminescent mark, said mark comprising a photoluminescent portion (10) which is transparent under normal light conditions and revealed by photoluminescence under UV illumination, said mark further comprising a non photoluminescent portion (9) which is transparent under normal light conditions as well as under UV illumination, said method comprising: deposing on said product a stack, said stack comprising alternatively layers (2, 4), such as AlN, with a thickness of less than 1 micron and layers (3) of a second material, such as GaN, with a thickness of less than 10 nm; raising the transparency of said non photoluminescent portion (10) with a deposition of transparent material (6) or incorporation of ions into said non photoluminescent portions.

A timepiece component according to the invention includes a metallic luster portion which is constituted by a first material containing a nitride or a carbide of Ti, a nitride or a carbide of Cr, or a metal material, and exhibits a metallic luster, a toning film which covers at least a part of the metallic luster portion, is constituted by a stacked body including a plurality of layers constituted by a material containing a metal oxide, and has a function of adjusting a color tone, and a functional film which is provided on a surface on the opposite side to a surface facing the metallic luster portion of the toning film, and imparts a specific function. The timepiece component is preferably a crystal, a case, or a band.

The invention relates to an anodic bonding method for bonding two elements with an intermediate layer. The invention especially, but not exclusively, relates to an anodic bonding method for between a metallic element and a heterogeneous element, for example a glass, artificial sapphire or ceramic element. The specificity and aim of the present invention is to produce an assembly that is gas-tight and fluid-tight, solderless, brazing- or welder-free and without organic compound (glue). The present method has multiple industrial applications, including making it possible to attach a watch-glass, typically made of mineral glass, sapphire or transparent or translucent ceramics, to a bezel or case middle of a watch case using the anodic bonding technique.

A cover for an electronic device and methods of forming a cover is disclosed. The electronic device may include a housing, and a cover coupled to the housing. The cover may have an inner surface having at least one of an intermediate polish and a final polish, a groove formed on the inner surface, and an outer surface positioned opposite the inner surface. The outer surface may have at least one of the intermediate polish and the final polish. The cover may also have a rounded perimeter portion formed between the inner surface and the outer surface. The rounded perimeter portion may be positioned adjacent the groove. The method for forming the cover may include performing a first polishing process on the sapphire component using a polishing tool, and performing a second polishing process on the groove of the sapphire component forming the cover using blasting media.

Watch glass (1) including a first element (2) made of a first material and a second element (3) made of a second material different from the first, more elastic than the first material, the second element (3) includes a skirt (3b) in its lower part, and the two elements (2, 3) are fixed to each other so that the first element (2) is oriented toward the exterior of a watch and the skirt of the second element (3) is adapted for the assembly of the watch glass (1) to a watch middle (4).

Seeded silicon carbide (SiC) for devices and panels are disclosed. In one example embodiment, a device includes a housing and a window. Further, the window is attached to the housing. In this example embodiment, the window of the device is fabricated using the seeded SiC having a single crystalline structure.

A light transmissive member includes a substrate having a light transmission property, wherein on one surface of the substrate, an antireflection layer in which a low-refractive index layer composed mainly of silicon oxide (SiO.sub.2) and a high-refractive index layer composed mainly of silicon nitride (SiN) are alternately stacked is formed, and on the other surface of the substrate, an antistatic layer including at least a transparent electrically conductive film layer is formed.

An optical component includes a base material and a film containing silica particles and conductive transparent metal oxide particles. The conductive transparent metal oxide particles are preferably composed of SnO.sub.2. The number-based average particle diameter of the conductive transparent metal oxide particles is preferably 0.8 nm or more and 5.0 nm or less. When the content of the silica particles in the film is represented by Xs (vol %) and the content of the conductive transparent metal oxide particles in the film is represented by Xc (vol %), it is preferred to satisfy the following relationship: 0.003Xc/Xs0.12.