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Antoine Anneton

Raphael Vernet

Ahmed-amine Homman

Raphaël Vernet

A removable calibration plate () comprises a sheet () comprising an upper face () intended to face towards the powerful incident-radiation beam, and bearing a reference marking () and being intended to receive a test marking (), and a lower face (). The plate () comprises an etching layer () to be etched by a powerful incident-radiation beam (F), this layer being secured to the upper face () of the sheet () and opaque to visible light, and being able to be destroyed locally by the powerful incident-radiation beam (F) in order to form the at least one test marking (), the sheet () being transparent to visible light, the lower face () of the sheet () being frosted.

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CEBAZAT, France

Antoine Anneton