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US 2014/0152964 A1Published application
Illumination device and projector
AssigneeSeiko Epson Corporation
InventorsHidefumi SAKATA, Shunji KAMIJIMA, Akira MIYAMAE, Shuji NARIMATSU
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Abstract
An illumination device includes: a light source device adapted to emit an excitation light beam; and a rotating fluorescent plate having a single fluorescent layer adapted to convert a part or whole of the excitation light beam into a fluorescent light beam. The fluorescent light beam includes two or more colored light beams, and the single fluorescent layer is formed on a circular disk, which can be rotated by a motor, continuously along a circumferential direction of the circular disk.
Claims21
An illumination device comprising:
- a light source device adapted to emit an excitation light beam;
- and
- a rotating fluorescent plate having a fluorescent layer formed on a disk, which can be rotated by a motor, along a circumferential direction of the disk, the fluorescent layer converting a part or whole of the excitation light beam into a fluorescent light beam that includes two or more colored lights and emitting the two or more colored lights simultaneously.
A projector comprising:
- an illumination device that includes a light source device adapted to emit an excitation light beam, and a fluorescent layer;
- a light modulation device adapted to modulate, in accordance with image information, an illumination light beam emitted from the illumination device;
- and
- a projection optical system adapted to project a modulated light emitted from the light modulation device as a projection image,
- wherein
- the fluorescent layer converts a part or whole of the excitation light beam into a fluorescent light beam that includes two or more colored lights, and emits the two or more colored lights simultaneously.
3 more elements
Dependencies are inferred from the claim text.