Variable color lighting instrument
First Claim
Patent Images
1. A lighting instrument comprising:
- a light source for projecting a beam of light along a primary axis of the instrument;
at least a first set of filters rotatably supported within the instrument, each filter being characterized in that light passing through the filter varies in color depending upon the angular orientation of the filter with respect to the light beam; and
a drive mechanism for each set of filters carried by the instrument and connected to the respective filters for rotating each filter about an axis, the axis of rotation of each filter intersecting the primary axis and the axis of rotation of at least one other filter at a common point, each filter being rotatable through a range of positions from an open position in which the filter is disposed substantially parallel to the primary axis to a closed position, whereby the set of filters in the closed position intercepts substantially the entire light beam passing through the instrument.
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Abstract
A lighting instrument having pivotable dichroic filters arranged in a substantially radial arrangement with respect to a projected light beam. Multiple sets of such filters are spaced along the axis of the light beam to vary the color of the light beam emitted from the instrument. A gearing mechanism rotates all filters of each set in synchronization with each other and independently with respect to filters of the other sets. The filters may be positioned to pass unfiltered light to vary the saturation of the light beam.
33 Citations
20 Claims
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1. A lighting instrument comprising:
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a light source for projecting a beam of light along a primary axis of the instrument; at least a first set of filters rotatably supported within the instrument, each filter being characterized in that light passing through the filter varies in color depending upon the angular orientation of the filter with respect to the light beam; and a drive mechanism for each set of filters carried by the instrument and connected to the respective filters for rotating each filter about an axis, the axis of rotation of each filter intersecting the primary axis and the axis of rotation of at least one other filter at a common point, each filter being rotatable through a range of positions from an open position in which the filter is disposed substantially parallel to the primary axis to a closed position, whereby the set of filters in the closed position intercepts substantially the entire light beam passing through the instrument. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A lighting instrument comprising:
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a frame having a longitudinal axis; a light source disposed at one end of the frame for projecting a beam of light through the frame in the direction of the longitudinal axis; at least one set of color filters supported by the frame for varying the color of light passing through the filters, each filter further being pivotable about an axis of rotation intersecting the longitudinal axis and the axis of rotation of at least one other filter; and means for rotating the filters in synchronization between a closed position in which substantially all of the light beam passes through the filters to an open position in which essentially none of the light beam passes through the filters. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A lighting instrument for altering the color of a beam of light projected along a primary axis of the instrument, comprising:
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first and second sets of pivotable color filters for varying the color of light passing through the filters, each color filter being pivotable about an axis of rotation intersecting the primary axis and the axis of rotation of at least one other filter, said sets being spaced apart from each other along the primary axis; and means associated with each set of filters for pivoting the filters in synchronization with each other and independently relative to those of the other set to enable selection of different colored light beams by selective positioning of the filters. - View Dependent Claims (14, 15, 16)
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17. A lighting instrument comprising:
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a frame having a longitudinal axis; first and second longitudinally spaced sets of color filters supported by the frame for varying the color of light passing through the filters, the filters of each set being pivotable about axes intersecting the longitudinal axis; first and second annular actuating members supported by the frame and rotatable about the longitudinal axis; a first set of pivoting actuators coupling filters of the first set to the first annular actuating member; a second set of pivoting actuators coupling filters of the second set to the second annular actuating member; first drive means for driving the first annular actuating member for pivoting the first set of filters; and second drive means for driving the second annular actuating member for pivoting the second set of filters independently from the pivoting action of the first set of filters. - View Dependent Claims (18)
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19. A lighting instrument comprising;
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a frame having a longitudinal axis; a light source disposed at one end of the frame for projecting a beam of light through the frame in the direction of the longitudinal axis; at least one set of color filters for varying the color of light passing through the filters, said filters being disposed generally radially about said longitudinal axis; and a drive mechanism coupled to each filter for rotating each filter about an axis of rotation generally transverse to said longitudinal axis. - View Dependent Claims (20)
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Specification