Phosphor Plate and Lighting Device Including the Same
AssigneeLG Innotek Co., Ltd.
InventorsWon Jin Kim, Ju Yeon Won, In Jae Lee
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Abstract
Embodiments of the present invention relate to a phosphor plate and a lighting device including the phosphor plate, the phosphor plate according to an embodiment of the present invention has a light incident region on which light generated from a light source is incident and a light emitting region which converts a wavelength of the incident light and then outputs the light, wherein a ratio of a diameter of the light incident region and a diameter of the light emitting region ranges from 1:3 to 1:9.
Claims20
A phosphor plate having a light incident region on which light generated from a light source is incident and a light emitting region which converts a wavelength of the incident light and then outputs the light,
- wherein a ratio of a diameter of the light incident region and a diameter of the light emitting region ranges from 1:3 to 1:9.
Alighting device, comprising:
- a light source which generates a laser ray;
- a light conversion unit which includes a phosphor plate having a light incident region on which the laser ray is incident and a light emitting region which outputs a converted light excited by the laser ray;
- and
- a housing which is arranged on a front surface of the light conversion unit and has an opening which exposes the light emitting region of the phosphor plate,
- wherein a ratio of a diameter of the light incident region of the phosphor plate and a diameter of the light emitting region of the phosphor plate ranges from 1:3 to 1:9.
Dependencies are inferred from the claim text.