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US 9,395,610 B2Granted
Light source, projector, and method of cooling discharge lamp
AssigneeSeiko Epson Corporation
InventorsJunichi Suzuki, Yasuhiro Toba, Tetsuo Terashima
Life of this patent
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Abstract
A light source includes a discharge lamp that outputs light, a discharge lamp driver that supplies drive power to the discharge lamp, a cooling unit that cools the discharge lamp, and a control unit that controls the cooling unit, and the control unit controls the cooling unit based on control information representing a relationship a rotation speed of the cooling unit between at least one of temperature information of the discharge lamp and a voltage between electrodes of the discharge lamp.
Claims17
A light source comprising:
- a discharge lamp that outputs light;
- a discharge lamp driver that supplies drive power to the discharge lamp;
- a cooling unit that cools the discharge lamp;
- and
- a control unit that controls the cooling unit,
- wherein the control unit controls the cooling unit based on both control information representing a relationship between a rotation speed of the cooling unit and a voltage between electrodes of the discharge lamp and a detected voltage between the electrodes of the discharge lamp.
3 more elements
A method of cooling a discharge lamp using a cooling unit comprising:
- controlling the cooling unit based on both control information representing a relationship between a rotation speed of the cooling unit and a voltage between electrodes of the discharge lamp and a detected voltage between the electrodes of the discharge lamp.
Dependencies are inferred from the claim text.