Method for making surface relief profilers

Details Method for making surface relief profilers Method for making surface relief profilers

B - Operations, Transporting

29

C

B29C 35/08 (2006.01) B29C 59/02 (2006.01) C03C 15/00 (2006.01) C03C 17/22 (2006.01) G02B 5/18 (2006.01)

Patent

CA 2198132

A method of multiple replication of a diffractive optical glass surface relief profiles into other glass-type substrates. For example, a malleable but hardenable layer formed on a glass substrate is embossed with a stamper having a reverse image of the optical glass surface relief profile, to result in a high quality copy of the original diffractive glass surface relief profile. The embossed layer is hardened and separated from the scamper. The hardened layer having the embossed surface relief profile is, for instance, etched down such that the surface relief profile is etched in to the surface of the glass substrate. The result of this method is a readily producible and very durable glass or like-material accurate replica, having high fidelity and being capable of providing high quality images, of another diffractive optical element.

Technique de reproduction à de multiples exemplaires du relief de surface d'un verre optique diffringent sur d'autres supports de type verre. Une couche malléable mais durcissable formée sur un support en verre est par exemple marquée en relief au moyen d'une matrice reproduisant l'image inversée du relief de surface du verre optique, ce qui permet d'obtenir une copie de haute qualité du relief de surface d'origine du verre diffringent. La couche marquée en relief est durcie et séparée de la matrice. La couche durcie où est formé le relief de surface est par exemple attaquée de telle façon que le relief de surface se grave sur la surface du support en verre. Cette technique permet d'obtenir facilement des répliques en verre ou autre matériau semblable, très fidèles et très durables, d'un élément optique diffringent susceptible de donner des images de haute qualité.

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