LIGHT SOURCE DEVICE AND PROJECTOR
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United States of America Patent
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app pub date -
Mar 31, 2014
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Mar 31, 2014
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Abstract
Light source device includes a light source, a dichroic mirror that reflects the S-polarized light of light from light source, a condensing lens group that converges reflected light from the dichroic mirror, a phosphor unit movable so that light from a condensing lens group is sequentially radiated to a phosphor region and a reflection region, and a ¼ wavelength plate provided between the lenses of the condensing lens group.
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