LIGHTING DEVICE AND PROJECTION DEVICE
First Claim
1. A lighting device, comprising:
- a light source for generating a blue excitation light;
a base board which comprises at least one segment located in the light path of the blue excitation light, wherein at least one of the at least one segment is a blue segment; and
a wavelength conversion material layer covering the blue segment, wherein the wavelength conversion material layer absorbs a part of the blue excitation light and emits a converted light whose color coordinates is within a pre-defined color area, so that a mixed light emitted from the blue segment is formed by the converted light and the remaining blue excitation light which is not absorbed by the wavelength conversion material layer, wherein the color coordinate of the mixed light is closer to a pre-defined blue light color coordinate than the color coordinate of the blue excitation light.
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Accused Products
Abstract
A lighting device (100) and a projection device, comprising a light source for generating a blue excitation light (110), a base board (130), and a wavelength conversion material layer (140) covered on the base board (130). The wavelength conversion material layer (140) absorbs a part of the blue excitation light and emits an excited light. The color coordinate of the excited light is within the pre-configured color area, so that a mixed light combined by the excited light and the remaining blue excitation light not absorbed by the wavelength conversion material layer (140) exits the wavelength conversion material layer (140). The color coordinate of the mixed light is closer to the pre-set blue light color coordinate than the color coordinate of the blue excitation light.
18 Citations
20 Claims
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1. A lighting device, comprising:
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a light source for generating a blue excitation light; a base board which comprises at least one segment located in the light path of the blue excitation light, wherein at least one of the at least one segment is a blue segment; and a wavelength conversion material layer covering the blue segment, wherein the wavelength conversion material layer absorbs a part of the blue excitation light and emits a converted light whose color coordinates is within a pre-defined color area, so that a mixed light emitted from the blue segment is formed by the converted light and the remaining blue excitation light which is not absorbed by the wavelength conversion material layer, wherein the color coordinate of the mixed light is closer to a pre-defined blue light color coordinate than the color coordinate of the blue excitation light. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification