Rolex Sa

Sébastien Perseguers

Adrien Catheline

Benoit Junod

Florian Calame

A timepiece glass, in particular a watch glass, wherein it comprises an optical device comprising at least one lens intended to enlarge an indication supplied by a timepiece, said lens comprising at least one aspherical face comprising at least one section passing through a vertical plane comprising an optical axis of vertical direction z, of which at least one outline can be defined by the following equation: in which R is the nominal radius of curvature, k is the constant of conicity, and &#x3b1;is or are coefficient(s) of asphericity, and in which at least the constant of conicity k and/or at least one coefficient of asphericity is different from zero.

Optical device for a timepiece

Transmission device (), for example for a watch mechanism (), in particular for a winding train () of a watch movement (),

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Carouge, Switzerland

Sébastien Perseguers