Spherical mirror (Mirrordome):
Planetarian, Vol 34(4), December 2005, pp 6-9
A new approach to hemispherical dome projection
planetarium projection, immersive displays, virtual reality,
digital projection spherical mirror.
Planetariums and smaller personal domes can provide an immersive environment for
science education, virtual reality, and entertainment. Digital projection
into domes, called "full dome projection" in the industry, can be a technically
challenging and expensive exercise, particularly so for installations with
modest budgets. An alternative full dome digital projection system is presented
based upon a single projector and a spherical mirror to scatter the light onto the
dome surface. The approach offers many advantages over the fisheye lens
alternatives, results in a similar quality result, but at a fraction of the cost.