Illumination system for display panels

G - Physics – 02 – B

Patent

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Details

G02B 27/18 (2006.01) G02B 27/42 (2006.01) G02F 1/1335 (2006.01) G02F 1/13357 (2006.01) H01L 21/02 (2006.01) H04N 9/31 (2006.01) H04N 5/74 (2006.01)

Patent

CA 2203026

Binary optics are used in an illumination system for a color projection display. In one embodiment a broad spectrum light source illuminates a multilevel optical phase element which disperses the broad spectrum light from the light source by diffraction. A display having a number of pixel elements, each capable of transmitting a predetermined spectral region, is positioned within the near field region of the multilevel optical phase element so as to receive the light dispersed by the multilevel phase element.

Cette invention se rapporte à une optique binaire utilisée dans un système d'éclairage pour visuel d'affichage couleur par projection. Dans un mode de réalisation de cette invention, une source lumineuse à large spectre éclaire un élément de phase optique multiniveau, lequel disperse la lumière à large spectre provenant de la source lumineuse par diffraction. Un visuel ayant un certain nombre de pixels, qui sont chacun capables de transmettre une région spectrale prédéterminée, est disposé dans la région de champ proche de l'élément de phase optique multiniveau, de façon à recevoir la lumière dispersée par l'élément de phase multiniveau.

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