| 摘要 |
<p>A hairspring (1) to equip a timepiece movement, made from a material capable of guiding light, and suitable for providing in situ control of mechanical performances, in particular isochrony, of this timepiece movement. The in situ control system of this hairspring in a timepiece movement and made from an optical fibre or ribbon, said system comprising (i) measurement means comprising means for injecting a control incident light beam into said optical fibre or ribbon, (ii) means for receiving, in return, a control reflected light beam, means for processing said incident and reflected beams respectively, so as to produce measurement information relative to mechanical performances, in particular the isochronic performance, of said hairspring. A portable control device (6) incorporating the measurement means of this control system in a housing.</p> |
