27 September 2008 New concept for a wide-angle collimated display
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Abstract
A unique collimated display concept has been developed by INO and its partners for wide angle immersive display applications. The concept involves the reflection of scanned beams inside a reflective dome having a symmetry of revolution and an elliptical profile. The axis of revolution of the reflective dome coincides with the axis of rotation of the scanning mirror. The nominal position of the observer's eyes is also located on the reflective dome's axis of revolution. The scanning mirror is centered close to one of the foci of the ellipsoidal reflective dome while the eyes of the observer are located close to the other ellipsoid focus point. The system projects only one line at the time and the full image is constructed by rotating the image line around the observer by means of the scanning mirror. Light is generated by a linear array of individually addressable light elements such as a linear array of deformable micro-mirrors illuminated by a laser line or an array of LED. The beams of light produced by the linear source are conditioned using specialized optical elements and introduced into the system from the outside by transmission through the dome shell.
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Michel Doucet, Min Wang, Francis Picard, Keith K. Niall, "New concept for a wide-angle collimated display", Proc. SPIE 7100, Optical Design and Engineering III, 710010 (27 September 2008); doi: 10.1117/12.797778; https://doi.org/10.1117/12.797778
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