| 摘要 |
The present invention relates to a hairspring for a timepiece hairspring-balance oscillator, which can be produced, in particular, from a low-density material such as silicon, diamond or quartz, and to a method of manufacturing such a hairspring. According to the invention, this hairspring comprises at least one leaf (2) the cross section of which has a thickness and a height and its characterizing feature is that the leaf (2) comprises a plurality of apertures (3) extending in the heightwise direction of the leaf and alternating with bridges (5). The invention also relates to a method of manufacturing such a hairspring.
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