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.

Provided is a reddish light emitting phosphorescent phosphor, that is efficiently excited with visible light and is chemically stable. The phosphorescent phosphor comprises a compound represented by MSi.sub.2O.sub.2N.sub.2:Yb,R, wherein M is at least one metal element selected from strontium, calcium, barium, and magnesium, and R is at least one element selected front erbium, holmium, gadolinium, praseodymium, terbium, dysprosium, neodymium, bismuth, scandium, and chromium. The phosphorescent phosphor is an excellent phosphorescent phosphor having a reddish afterglow.

Provided is a reddish light emitting phosphorescent phosphor, that is efficiently excited with visible light and is chemically stable. The phosphorescent phosphor comprises a compound represented by MSi.sub.2O.sub.2N.sub.2:Yb,R, wherein M is at least one metal element selected from strontium, calcium, barium, and magnesium, and R is at least one element selected front erbium, holmium, gadolinium, praseodymium, terbium, dysprosium, neodymium, bismuth, scandium, and chromium. The phosphorescent phosphor is an excellent phosphorescent phosphor having a reddish afterglow.

The present invention relates to a method for manufacturing a luminescent horological component for a portable object.

A watchmaking gasket, in particular a watch glass gasket for a timepiece, includes a polymer matrix charged with phosphorescent and/or fluorescent pigments.

A watchmaking gasket, in particular a watch glass gasket for a timepiece, includes a polymer matrix charged with phosphorescent and/or fluorescent pigments.

A display device (100) for a watch (1000) including at least one light source (200) and including, between a dial (300) carrying at least one reference scale on a top side (301) and a crystal (400) on the side facing the user a set of hands (10) coaxial about an axis of rotation (D) including at least a first luminous indicator (1) including a first light guide (11) arranged to diffuse some of the light emitted by said at least one light source (200), wherein the first light guide (11) includes first coupling microstructures (110) which are arranged to allow light to enter the first light guide (11) and/or to allow light to exit the first light guide (11).

A method for manufacturing a luminous horological hand (80), according to which there is separately manufactured, on the one hand, through a first group of operations (1000), at least one light guide (30) or a strip of light guides (35) by replication of micro-structures made initially on a master (1) and, on the other hand, through a second group of operations (2000), at least one hand body (50) or a strip of hand bodies (55), which is assembled with the at least one light guide (30) or a strip of light guides (35) through a bonding operation (600) and an assembly operation (700), before the luminous hand (80) is finished through a final cutting operation (800).

A method for manufacturing a luminous horological hand (80), according to which there is separately manufactured, on the one hand, through a first group of operations (1000), at least one light guide (30) or a strip of light guides (35) by replication of micro-structures made initially on a master (1) and, on the other hand, through a second group of operations (2000), at least one hand body (50) or a strip of hand bodies (55), which is assembled with the at least one light guide (30) or a strip of light guides (35) through a bonding operation (600) and an assembly operation (700), before the luminous hand (80) is finished through a final cutting operation (800).

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.