Reflective iris
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United States of America Patent
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Issued Date -
Jan 1, 2009
app pub date -
Jun 29, 2007
filing date -
Jun 29, 2007
priority date (Note) -
Abandoned
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Abstract
According to embodiments described in the specification, a reflective iris is described for concentrating collimated light emitted from a parabolic lamp, the parabolic lamp comprising a lamp aperture from which the collimated light is emitted. The reflective iris is comprised of a planar reflective element for reflecting the collimated light back towards the parabolic lamp, a shape of the planar reflective element being generally complementary to a shape of the lamp aperture; and an optical aperture through the planar reflective element, disposed around a perpendicular axis of the planar reflective element, for light to pass through the planar reflective element. When the reflective iris is axially aligned with the parabolic lamp, the collimated light is reflected from the planar reflective element back towards the parabolic lamp, for reflection back through the optical aperture.
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