Aerial display system with low cost plastic spherical mirror

G - Physics – 02 – B

Patent

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Details

G02B 27/00 (2006.01) G02B 17/00 (2006.01) G02B 27/10 (2006.01) H04N 7/18 (2006.01)

Patent

CA 2697245

An aerial display system comprising inexpensive optical elements and a highly brightened LCD display or similar video image display types provides floating images in an expensive enclosure. In the aerial display system, either an anti-reflective acrylic plastic layer or a circular polarizer is disposed proximate and parallel to a beam splitter so that the focal point of the floating image is proximate to the plastic layer or polarizer. The image position yields both a wider field of view and wider perceived field of view. The aerial projection system includes a plastic spherical mirror of low cost, which includes a plastic part of at least the following descriptions: mirror surface supported by wall structures of sufficient sphericity, of a plastic material formulation, having excellent optical grade finish, a reflective metal coating, and a protective overcoat.

La présente invention concerne un système d'affichage aérien comprenant des éléments optiques bon marché et un écran à cristaux liquides fortement éclairci ou des types semblables d'afficheurs d'image vidéo, lequel système donne des images flottantes dans une enceinte bon marché. Dans le système d'affichage aérien, on a disposé soit une couche de plastique acrylique antireflets, soit un polariseur circulaire, a proximité et parallèlement par rapport à un diviseur de faisceaux de façon que le foyer de l'image flottante soit proche de la couche plastique ou du polariseur. La position de l'image donne un champ de vision plus large ainsi qu'un champ de vision perçu plus large. Le système de projection aérien comprend un miroir sphérique en plastique qui comporte une partie en plastique comprenant au moins une surface miroir reposant sur des structures murales suffisamment sphériques, d'une formulation de matière plastique d'un excellent fini de qualité optique, un revêtement métallique réflecteur, et une couche de finition.

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