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US 8,947,765 B2Granted
Light-emitting apparatus capable of adjusting a color of a projected light thereof
AssigneeSamsung Electronics Co., Ltd.
InventorsMoon Gyu Han, Jung Woo Kim, InKyeong Yoo
Life of this patent
Estimating the term…
Abstract
A light-emitting apparatus includes a light source to emit light, a photonic crystal to pass light of different wavelengths based on the light from the light source, and a projector to project the light passing through the photonic crystal. The photonic crystal may be electrically or mechanically controlled to pass the different wavelengths of light.
Claims27
A light-emitting apparatus comprising:
- a light source configured to emit light;
- a photonic crystal configured to pass light of different wavelengths based on the light emitted from the light source;
- and
- a projector configured to project the light which passes through the photonic crystal, the photonic crystal configured to be electrically controlled to selectively pass the different wavelengths of light.
1 more element
A light-emitting apparatus comprising:
- a light source configured to emit light;
- a photonic crystal configured to pass light of different wavelengths based on the light emitted from the light source;
- a projector configured to project the light which passes through the photonic crystal;
- and
- a deflector configured to apply a pressure to cause the photonic crystal to change between contracted and expanded states, the photonic crystal having a photonic bandgap which varies according to the contracted and expanded states of the photonic crystal, the photonic crystal configured to output a first wavelength of the different wavelengths in the contracted state and configured to output a second wavelength of the different wavelengths in the expanded state.
2 more elements
A light-emitting apparatus comprising:
- a light source configured to emit light;
- a photonic crystal configured to reflect light of different wavelengths based on the light emitted from the light source;
- a projector configured to project the light reflected by the photonic crystal;
- and
- a light guide disposed between the photonic crystal and the projector to transmit light emitted from the light source to the photonic crystal and to transmit the light reflected by the photonic crystal to the projector, the photonic crystal having a variable photonic bandgap which is electrically controlled to adjust the wavelength of the reflected light.
2 more elements
A light-emitting apparatus comprising:
- a light source configured to emit light;
- a photonic crystal configured to reflect light of different wavelengths based on the light emitted from the light source;
- a projector configured to project the light reflected by the photonic crystal;
- and
- a deflector configured to apply pressure for causing the photonic crystal to change between contracted and expanded states, the photonic crystal having a photonic bandgap which varies between the contracted and expanded states to adjust the wavelength of the reflected light.
2 more elements
Dependencies are inferred from the claim text.