The invention relates to a watch glass comprising a cover glass, a support glass connected with the cover glass for forming a glass unit and a luminescent element introduced into the glass unit. Furthermore, the invention relates to a watch comprising such a watch glass.

A watch includes crystal, a dial including a marking, a pointer including a luminous body, and a light-transmissive member disposed between the crystal and the dial, the light-transmissive member including a first face facing the crystal and a second face facing the dial, in which the first face is provided with a first luminous member and a second luminous member, and the second face is provided with a third luminous member and a fourth luminous member.

A watch includes crystal, a dial including a marking, a pointer including a luminous body, and a light-transmissive member disposed between the crystal and the dial, the light-transmissive member including a first face facing the crystal and a second face facing the dial, in which the first face is provided with a first luminous member and a second luminous member, and the second face is provided with a third luminous member and a fourth luminous member.

A horological component including a substrate and at least one first decoration component including at least one first photoluminescent material configured to procure a phosphorescent appearance. The horological component includes a second decoration component including at least one second material, the second material being metallic and configured to procure a metallic appearance, or variochromic and configured to procure a color that varies under the effect of a stimulus, the first decoration component and the second decoration component being arranged relative to one another on the substrate to form a decoration having a metallic appearance or a color that varies under the effect of a stimulus when the horological component is exposed to light and a phosphorescent appearance when the horological component is in the dark. A timepiece can include such a horological component.

A horological component including a substrate and at least one first decoration component including at least one first photoluminescent material configured to procure a phosphorescent appearance. The horological component includes a second decoration component including at least one second material, the second material being metallic and configured to procure a metallic appearance, or variochromic and configured to procure a color that varies under the effect of a stimulus, the first decoration component and the second decoration component being arranged relative to one another on the substrate to form a decoration having a metallic appearance or a color that varies under the effect of a stimulus when the horological component is exposed to light and a phosphorescent appearance when the horological component is in the dark. A timepiece can include such a horological component.

A method for producing a functional element on a timepiece component, including generating, with a control unit, at least one control command for a printing device intended to reproduce a reference digital graphical representation relating to the functional element; and constructing, with the printing device, at least one layer of at least one functional particle printed on the timepiece component so as to form the functional element.

A method for producing a functional element on a timepiece component, including generating, with a control unit, at least one control command for a printing device intended to reproduce a reference digital graphical representation relating to the functional element; and constructing, with the printing device, at least one layer of at least one functional particle printed on the timepiece component so as to form the functional element.

A dial for a watch including an autonomous lighting device including the following functional elements: at least one luminous source, an autonomous power supply unit, and a control unit for managing the operation of the at least one luminous source, the dial being formed by an assembly of a plurality of stacked layers connected together and each including one or more functional elements of the autonomous lighting device.

A dial for a watch including an autonomous lighting device including the following functional elements: at least one luminous source, an autonomous power supply unit, and a control unit for managing the operation of the at least one luminous source, the dial being formed by an assembly of a plurality of stacked layers connected together and each including one or more functional elements of the autonomous lighting device.

A miniature, self-powered, user-powered lighting device, employing mechanical energy storage and incorporating miniature lighting elements which are illuminated on-demand for a limited duration for backlighting or illumination purposes without the need for a battery or other electro-chemical storage device. The device comprising a manual spring loading mechanism, a spiral spring, a manual trigger mechanism, a transmission for increasing the rotational speed, a miniature generator, and at least one light source.