LIGHT SOURCE APPARATUS, PROJECTOR, AND METHOD FOR ILLUMINATING AN IMAGE MODULATION ELEMENT
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United States of America Patent
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Nov 12, 2015
app pub date -
Dec 25, 2012
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Dec 25, 2012
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Abstract
This light source apparatus is provided with: a fluorescent material, an excitation light source that emits excitation light for exciting the fluorescent material, a first homogeneous optical element that makes the illuminance distribution of the excitation light more homogeneous and then emits the excitation light, a second homogeneous optical element that makes the illuminance distribution of the fluorescent light emitted from the fluorescent material more homogeneous and then emits the fluorescent light, a first optical system that guides the excitation light to the first homogeneous optical element, a second optical system that guides light emitted from the first homogeneous optical element to the fluorescent material, and a third optical system that guides the fluorescent light supplied from the fluorescent material to the second homogeneous optical element.
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