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US 2010/0270940 A1Published application
Lamp, light-emitting device, and projector
AssigneeSeiko Epson Corporation
InventorsYutaka Takada, Makoto Inoguchi
Life of this patent
Estimating the term…
Abstract
A lamp includes a light emitter enclosing a material emitting light upon receiving irradiation of microwave, and a coil formed on an outer side of the light emitter. In the lamp, a position of the coil with respect to the light emitter is changed in response to a temperature.
Claims14
A lamp, comprising:
- a light emitter enclosing a material emitting light upon receiving irradiation of microwave;
- and
- a coil formed on an outer side of the light emitter, the coil being made of a shape-memory alloy having a first and a second shape, the coil having the first shape when the temperature of the coil is in a first temperature range, the coil having the second shape when the temperature of the coil is in a second temperature range.
A light emitting device, comprising:
- a lamp enclosing a material emitting light upon receiving irradiation of microwave;
- a lamp retainer retaining the lamp;
- a coil located on an outer side of the lamp retained by the lamp retainer, the coil being made of a shape-memory alloy having a first and a second shape, the coil having the first shape when the temperature of the coil is in a first temperature range, the coil having the second shape when the temperature of the coil is in a second temperature range;
- and
- a microwave generator generating the microwave.
2 more elements
A projector, comprising:
- a lamp enclosing a material emitting light upon receiving irradiation of microwave;
- a lamp retainer retaining the lamp;
- a coil located on an outer side of the lamp retained by the lamp retainer, the coil being made of a shape-memory alloy having a first and a second shape, the coil having the first shape when the temperature of the coil is in a first temperature range, the coil having the second shape when the temperature of the coil is in a second temperature range;
- a microwave generator generating the microwave;
- a light modulator forming an optical image by modulating the light from the lamp corresponding to image data;
- and
- a projection portion projecting the optical image formed by the light modulator.
4 more elements
Dependencies are inferred from the claim text.