Visual effect based on a micro-optical grid structure

G - Physics – 02 – B

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

G02B 5/32 (2006.01) G02B 5/18 (2006.01) G03H 1/02 (2006.01) G11C 13/04 (2006.01)

Patent

CA 2507913

The invention relates to a micro-optical grid structure (G) formed on a substrate (S) that is preferably produces as a surface grid structure. The invention also relates to a method for producing said grid structure. Furthermore, the invention relates to a product that comprises one or several pattern areas (A, B, C, D), which single pattern areas are formed by means of the grid structure according to the invention. According to the invention the grid structure (G) is arranged to produce for a viewer a holographic or corresponding visual effect based on the diffraction of light by directing the light diffracted from the grid structure and corresponding to the design wavelength (.lambda.) substantially to only a few diffraction orders (m). Single diffraction order thus corresponds to a certain observing direction of the visual effect observed on said design wavelength. According to the invention the grid structure is arranged to leave a free range of angles between adjacent observing directions, such that the grid structure (G) being examined from directions corresponding to said range of angles does not produce for the viewer a clearly observable effect based on diffraction, said grid structure being thus substantially transparent. The invention is suitable for producing visual effects that are transparent in the above-described way but at the same time clearly visible in the observing directions for example on the substrates transparent as such.

L'invention concerne une structure de grille micro-optique (G) formée sur un substrat (S) se présentant de préférence sous forme de structure de grille superficielle. L'invention concerne en outre un procédé permettant de produire ladite structure de grille. L'invention concerne en outre un produit comprenant une ou plusieurs surfaces de modèle (A, B, C, D). les surfaces de modèle isolées sont formées au moyen de la structure de grille selon l'invention. Selon ladite invention, la structure de grille (G) est disposée de manière à produire un effet visuel holographique ou correspondant, pour un observateur, effet fondé sur la diffraction de la lumière par orientation de la lumière diffractée de la structure de grille et correspondant à la longueur d'ondes (.lambda.) prévue, sensiblement à uniquement quelques ordres de diffraction (m). L'ordre de diffraction isolé correspond de ce fait à un certain sens d'observation de l'effet visuel observé à ladite longueur d'ondes prévue. Selon l'invention, la structure de grille est disposée de manière à laisser une plage libre d'angles entre des sens d'observation adjacents, de sorte que la structure de grille (G) examinée depuis des directions correspondant à ladite plage d'angles ne produise pas pour l'observateur un effet pouvant être observé nettement sur la base de la diffraction, ladite structure de grille étant de ce fait sensiblement transparente. L'invention s'utilise pour produire des effets visuels transparents selon la manière décrite ci-dessus, mais simultanément nettement visibles dans les sens d'observation, par exemple sur des substrats transparents en tant que tels.

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

Visual effect based on a micro-optical grid structure does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Visual effect based on a micro-optical grid structure, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Visual effect based on a micro-optical grid structure will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-1713687

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.