Illuminating device
AssigneeFoxsemicon Integrated Technology, Inc.
InventorChih-Ming Lai
Life of this patent
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Abstract
An illuminating device (90a) includes a plurality of LEDs (91) and a light guiding plate (93a). The light guiding plate includes a light incident surface (931) and a light output surface (932). A fluorescent material (938) is distributed in an inside of the light guiding plate. The LEDs are used to emit first light of a first wavelength to excite the fluorescent material thereby producing second light of a second wavelength. The LEDs and the fluorescent material are arranged in a manner that the combined first and second light emitted from the light output surface appears to be white light.
Claims9
An illuminating device comprising:
- a light emitting component;
- a light guiding plate including a light incident surface and a light output surface, the light guiding plate defining a plurality of recesses in the light output surface, the recesses having a depth gradually increasing in a direction away from the light emitting component;
- and
- a fluorescent material distributed in an inside of the light guiding plate, the light emitting component configured for emitting first light of a first wavelength to excite the fluorescent material thereby producing second light of a second wavelength, the light emitting component and the fluorescent material being arranged in a manner that the combined first and second light emitted from the light output surface appears to be white light;
- wherein the recesses have the fluorescent material received therein.
An illuminating device comprising:
- a light emitting component;
- a light guiding plate including a light incident surface and a light output surface, the light guiding plate defining a plurality of cavities therein, the light guiding plate defining a plurality of recesses in the light output surface, the recesses having a depth gradually increasing in a direction away from the light emitting component;
- and
- a fluorescent material received in at least one of the cavities, the light emitting component configured for emitting first light of a first wavelength to excite the fluorescent material thereby producing second light of a second wavelength, the light emitting component and the fluorescent material being arranged in a manner that the combined first and second light emitted from the light output surface appears to be white light;
- wherein the recesses have the fluorescent material received therein.
An illuminating device comprising:
- a light emitting component;
- a light guiding plate including a light incident surface and a light output surface, the light guiding plate defining a plurality of recesses in the light output surface, the recesses having a depth gradually increasing in a direction away from the light emitting component;
- and
- a fluorescent material received in at least one of the recesses, the light emitting component configured for emitting first light of a first wavelength to excite the fluorescent material thereby producing second light of a second wavelength, the light emitting component and the fluorescent material being arranged in a manner that the combined first and second light emitted from the light output surface appears to be white light.
Dependencies are inferred from the claim text.