Projector
AssigneeSeiko Epson Corporation
InventorKoichi Akiyama
Life of this patent
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Abstract
A projector including a light source apparatus that includes a fluorescent layer that produces fluorescence by irradiation of an excitation light emitted from a solid-state light source, a polarization conversion element that converts the light from the light source apparatus into polarized light, and a reflector that is disposed between the light source apparatus and the polarization conversion element, transmits light in the vicinity of the optical axis of the light source apparatus, and reflects peripheral light apart from the optical axis of the light source apparatus toward the fluorescent layer.
Claims15
A projector comprising:
- an illuminator including a light source apparatus that includes the following components and outputs parallelized light:
- a solid-state light source that produces excitation light, a fluorescent layer that produces fluorescence from a part of the excitation light emitted from the solid-state light source, and a collimator system that parallelizes a light from the fluorescent layer;
- a light modulator that modulates a light from the illuminator in accordance with image information;
- and
- a projection system that projects a light from the light modulator, wherein the illuminator further includes
- a polarization conversion element that converts a light from the light source apparatus into a polarized light, and
- a reflector that is disposed between the light source apparatus and the polarization conversion element, transmits light in the vicinity of an optical axis of the light source apparatus, and reflects peripheral light apart from the optical axis of the light source apparatus toward the fluorescent layer,
- wherein the collimator system is formed of at least two collimator lenses, and at least one surface among surfaces of the at least two collimator lenses s an aspheric surface.
A projector comprising:
- a light source apparatus that includes a solid-state light source, a fluorescent layer that produces fluorescence from part of excitation light emitted from the solid-state light source, and a collimator system that parallelizes light from the fluorescent layer;
- a polarization conversion element including a polarization separation layer, a reflection layer, and a wave plate, the polarization conversion element receiving light emitted from the light source apparatus;
- a light modulator that modulates light from the polarization conversion element in accordance with image information;
- a projection system that projects light from the light modulator;
- and
- a reflector disposed between the light source apparatus and the polarization conversion element, the reflector including a light transmitting section and a light reflection section,
- wherein the light transmitting section transmits a first component of the light emitted from the light source apparatus, the first component travelling toward the polarization separation layer, and
- wherein the light reflecting section reflects a second component of the light emitted from the light source apparatus, the second component travelling toward an area other than the polarization separation layer.
Dependencies are inferred from the claim text.