Diffractive display

G - Physics – 02 – B

Patent

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Details

G02B 5/18 (2006.01) G02B 5/32 (2006.01) G02B 26/08 (2006.01) G02B 27/44 (2006.01)

Patent

CA 2381698

A diffractive display suitable for presenting graphic displays is disclosed. One embodiment includes a holographic diffraction pattern (100) carried by a permanent magnet (120) or related element and an electrically energizable coil or conductor (160) energizable for causing movement of the magnet. Rotation of the holographic diffraction pattern about a pivot (140) generates a display with diffracted light from the holographic diffraction grating. Another embodiment includes a faceted rotatable element (FRE) having an array of facets each bearing a diffraction grating and a source energizable for rotation of the FRE from a resting station to a viewing station. Rotation of the FRE generates a display from the diffracted light.

L'invention concerne un affichage à diffraction permettant d'effectuer des affichages graphiques. L'un des modes de réalisation comprend un motif de diffraction holographique (100) porté par un aimant permanent (120) ou un élément similaire et une bobine ou un conducteur à excitation électrique (160) servant à imprimer un mouvement à cet aimant. La rotation du motif de diffraction holographique autour d'une articulation (140) produit un affichage à lumière diffractée en provenance du réseau de diffraction holographique. Dans un autre mode de réalisation, un élément rotatif à facettes comprend un ensemble de facettes comportant chacune un réseau de diffraction et une source dont l'excitation provoque la rotation dudit élément rotatif entre une station de repos et une station de visualisation. La rotation de cet élément produit un affichage en provenance de la lumière diffractée.

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