Optical waveguide system for a flat-panel display

G - Physics – 09 – F

Patent

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G09F 9/305 (2006.01) G02B 6/04 (2006.01)

Patent

CA 2457345

A flat panel display for providing high contrast, low-artifact enlarged optical images. The flat panel display comprises a pixelated input imaging device (100), a first array (11) of optical waveguides (15) including a bias cut (16), a first light redirecting layer (13), a second array (12) of optical waveguides (18) also including a bias cut (17), and a second light redirecting layer (14). The first and second arrays (11, 12) of optical waveguides (15, 18) enlarge an input image in first and second directions respectively.

L'invention concerne un écran plat présentant un contraste élevé et des images optiques élargies à faible taux d'artefacts. Cet écran plat comprend un dispositif d'imagerie d'entrée pixelisée (100), un premier réseau (11) de guides d'ondes optiques (15) comprenant une coupe en biais (16), une première couche de redirection de lumière (13), un second réseau (12) de guides d'ondes optiques (18), comprenant également une coupe en biais (17), une seconde couche de redirection de lumière (14). Le premier réseau (11) et le second réseau (12) de guides d'ondes optiques (15, 18) permettent d'élargir une image d'entrée, respectivement dans une première direction et dans une seconde direction.

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