Provided is a timepiece component including a train wheel bridge, wherein the train wheel bridge includes a base material in which a first groove, a second groove, and a flat portion are formed along a first direction, in a second direction orthogonal to the first direction, the flat portion is provided between the first groove and the second groove, in the first direction, in the first groove and the second groove, a wide width portion and a narrow width portion are alternately provided, in the second direction, the wide width portion and the narrow width portion are alternately provided, and a depth of the wide width portion is deeper than a depth of the narrow width portion.

The present invention discloses devices for projecting holographic content from a watch and methods therein. Devices include: a watch base for housing the watch; an opaque watch face attached to the base; a transparent watch cover for protecting the face; a light wand having a series of controllable light-emitting elements configured to project the holographic content, wherein the series is disposed on the wand such that light emitted from the elements is projected primarily toward the cover, the wand is disposed: mostly parallel to the surfaces of the face and cover; and between the face and cover with a spacing greater than about 40% of a face/cover gap adapted to produce suitable, projected holographic content free from distortion caused by the proximity of the face to the wand; and a spinning axis for mounting the wand, configured for rotating in order to spin the wand for projecting the holographic content.

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 s 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 dial includes a substrate having transmissivity and two or more types of transmissive color films provided at one surface of the substrate, in which the two or more types of transmissive color films do not overlap with each other in plan view as viewed from a direction perpendicular to the one surface of the substrate.

A setting or mounting includes a ring carrying elements for setting a decorative element, this setting or mounting being arranged to be placed radially inside a hollow provided in a substrate of an item to be decorated. The setting includes a circular slot arranged to receive a ring-like element made of a shape memory alloy which can undergo a reversible transformation. The ring-like element is able to move from a retracted position in which it rests in the slot, to an open position in which the ring-like element at least partially protrudes from the slot to hold the setting in the substrate.

The present invention relates to a covering element for a portable object made of a first material, the first material being a ceramic material having a first color, characterized in that the surface of said covering element is at least partially treated so as to exhibit at least one conversion having a different color from the first color.

A timepiece or jewelry component comprising a substrate and at least one decoration joined to the substrate, wherein it comprises a transparent coating covering at least one part of the substrate and at least one part of the decoration, the coating changing the perceptible color of the substrate without changing the perceptible color of the at least one decoration.

To provide a decorative member having a cherry blossom pink color.

A cherry blossom pink decorative member of the present invention includes a base and a decorative coating formed on the base, wherein the decorative coating is formed by layering an undercoat layer and a finishing layer from the base side, the undercoat layer is a carbonitride layer composed of a carbonitride of a metal containing Ti and at least one selected from Nb and Ta, and the finishing layer is a Au alloy layer composed of an alloy containing Au, a metal having a silver color, and Cu.

A thermochromic element including a thermochromic layer including a binder and a thermochromic pigment chosen to react at a specific temperature so that the pigment passes from a first color to a second color when the specific temperature is reached. The thermochromic layer coats a thermally conductive layer, and is protected by an optically transparent layer that protects it from chemical and physical degradation.

A light-emitting clock has a case, a dial, a light-emitting mechanism, a movement and a plurality of hands. The case has a front cover, a back cover and a washer. The front cover is coupled to the back cover. The washer is disposed between the front cover and the back cover. The dial is disposed between the washer and the back cover. The light-emitting mechanism has a switch, a power unit electrically connected to the switch, and at least one lamp strip electrically connected to the switch. The switch and the power unit are disposed on the back cover. The lamp strip is annularly disposed at the washer. A light-emitting surface of the lamp strip at least faces the rim of the dial. The movement is disposed on the back cover. The hands are coupled to the movement and correspond in position to one side of the dial.