Light-emitting diode (LED) illumination system for a digital micro-mirror device (DMD) and method of providing same
First Claim
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1. A light illumination system for projecting a color image comprising:
- a light emitting diode (LED) illumination assembly operable to generate a plurality of different color light beams;
a dichroic combiner for combining the plurality of different color light beam into a common light path;
an optical waveguide coupling the LED illumination assembly to the dichroic combiner;
a digital micro-mirror display (DMD) panel; and
a condenser lens system for directing light from the dichroic combiner to the DMD panel.
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Abstract
A light illumination system for projecting a color image to a digital micro-mirror display (DMD) panel includes a light-emitting diode (LED) illumination assembly (101, 102, 103), a dichroic combiner (107) for providing a single light source and a condenser lens system (FIGS. 20-23) for directing light from the single light source to the DMD panel. The invention provides a cost effective and efficient system for providing a non-polarized uniform light source to a DMD panel.
68 Citations
27 Claims
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1. A light illumination system for projecting a color image comprising:
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a light emitting diode (LED) illumination assembly operable to generate a plurality of different color light beams;
a dichroic combiner for combining the plurality of different color light beam into a common light path;
an optical waveguide coupling the LED illumination assembly to the dichroic combiner;
a digital micro-mirror display (DMD) panel; and
a condenser lens system for directing light from the dichroic combiner to the DMD panel. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A light emitting diode (LED) illumination system comprising:
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a plurality of LED light sources;
at least one optical waveguide associated with the plurality of LED light sources;
a non-polarized dichroic combiner for combining light from the at least one optical waveguide into a single light source; and
a projection system for projecting the single light source onto a digital micro-mirror device (DMD) display panel. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A method for projecting a color image comprising the steps of:
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coupling different color light beams from at least one light emitting diode (LED) to a dichroic combiner;
combining the different color light into a common light path using the dichroic combiner; and
directing light from the dichroic combiner to a digital micro-mirror display (DMD) panel using a condenser lens system. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27)
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Specification