Stage lighting apparatus
AssigneeLehigh University
InventorGeorge C. Izenour
Life of this patent
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Abstract
A stage lighting unit including a beam former and beam redirector. The beam redirector allows for the remote control of beam over a large expanse of the stage.
Claims11
A stage lighting unit including a beam former for providing a beam and a beam redirector for aiming the beam from the beam former selectively to areas over a large expanse of the stage, said beam former including a lamp for providing a spectrum of visible light and a reflector for forming the light from the lamp into a beam of substantial cross-section and means for focusing the beam as a spot when projected onto a stage, said beam redirector being secured to said beam former for adjustment about the axis of the beam from the beam former, said beam redirector including a first mirror and a second mirror, said first mirror being disposed to intercept the beam from the beam former and reflect it to the second mirror, and said second mirror being arranged to reflect the beam from the first mirror as an output beam, the axes of the beam from the beam former and of the succcessively reflected portions of the beam being in a common plane, the second mirror being mounted for adjustment about an axis perpendicular to said common plane.
A stage lighting unit including a beam former having means for providing a beam having a broad spectrum of visible light and means for adjusting the beam characteristics, means for mounting said beam former stationary with its beam directed downward and at least approximately vertical, and a beam redirector mounted on the lower end of said beam former and adjustable about the axis of the beam emitted by the beam former for providing an azimuth beam-adjustment, said beam redirector also including adjustable means for providing an elevation beam adjustment.
A stage lighting unit including a beam former for providing a formed beam directed along an axis,
- i. the beam former having a lamp that emits a broad spectrum of visible light and a reflector that acts with the lamp for providing a beam of substantial cross-section, the beam former also having adjustable means for shaping the outline of the formed beam and adjustable focusing means disposed along the path of said formed beam,
- ii. A beam redirecting unit mounted on the beam former for adjustment about the axis of the beam former's beam, said beam redirecting unit having first and second mirrors, the first mirror being disposed to intercept the broad beam from the beam former and reflect it to the second mirror and the second mirror being disposed to intercept the beam from said first mirror and said second mirror being adjustable about an axis, the axes of the beam former and the second mirror being related for directing the beam from the beam former to selected areas throughout the stage, and
- iii. means for operating said beam former and said beam redirector by remote control including motors in the beam former for operating said adjustable beam shaping means and said adjustable focussing means and a motor for operating said beam redirecting unit about the beam former's axis, and another motor in the beam redirecting unit for operating said second mirror about its axis.
Dependencies are inferred from the claim text.