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, wherein the pre-defined color area is a first color area which is formed by line segments, lines or curved lines which intersect end to end as follows;
a line and its extension line formed by connecting color coordinate of the blue excitation light and the color coordinate (0.14, 0.03), a line segment between the color coordinate (0.14, 0.03) and color coordinate (0.18, 0.03), a line and its extension line formed by connecting the color coordinate of the blue excitation light and the color coordinate (0.18, 0.03), and a boundary curved line of the CIE 1931 color space of International Commission on Illumination, 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.
2 Assignments
0 Petitions
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.
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Citations
18 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, wherein the pre-defined color area is a first color area which is formed by line segments, lines or curved lines which intersect end to end as follows;
a line and its extension line formed by connecting color coordinate of the blue excitation light and the color coordinate (0.14, 0.03), a line segment between the color coordinate (0.14, 0.03) and color coordinate (0.18, 0.03), a line and its extension line formed by connecting the color coordinate of the blue excitation light and the color coordinate (0.18, 0.03), and a boundary curved line of the CIE 1931 color space of International Commission on Illumination, 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)
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Specification