Light source device and projector
AssigneeSeiko Epson Corporation
InventorsSatoru Nagarekawa, Kiyotaka Nakano
Life of this patent
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Abstract
A light source device includes: an arc tube having a bulb portion and a sealing portion; a reflector which fixes the arc tube; and a holding portion which holds the reflector, wherein the holding portion includes an inlet port, a partition provided between the inlet port and the arc tube, a pair of passages to which diverges in the partition and can circulate the cooling air to the arc tube, a first opening provided in the partition, and a shutter which is provided on that side of the partition where the inlet port is located, rotates about a rotation axis, and blocks a lower passage of the pair of passages, and on that side of the shutter where the rotation axis is located, a second opening is provided so as to overlap the first opening as seen from the inlet port.
Claims10
A light source device comprising:
- an arc tube having a bulb portion emitting a luminous flux;
- a sealing portion extending from the bulb portion to a side to which the luminous flux is emitted;
- a reflector fixing the arc tube and reflecting the luminous flux;
- and
- a holding portion holding the reflector, the holding portion including:
- an inlet port positioned lateral to the arc tube and introducing cooling air into the holding portion in a direction which is orthogonal to an optical axis of the luminous flux;
- a partition provided between the inlet port and the arc tube;
- a pair of passages to which the top and bottom of the arc tube diverges in the partition, and can circulate the cooling air to the arc tube;
- a first opening provided in the partition and through which a part of the cooling air from the inlet port passes;
- and
- a shutter provided on that side of the partition where the inlet port is located, rotating around a rotation axis which is parallel to the optical axis, and blocking a lower passage of the pair of passages,
- wherein the shutter has a second opening on a side of the shutter where the rotation axis is located, and
- the second opening is provided so as to overlap the first opening as seen from the inlet port.
Dependencies are inferred from the claim text.