Lighting equipment
First Claim
Patent Images
1. A lighting equipment comprising:
- a plurality of light-emitting units, each of the light-emitting units comprising;
a light source, anda bulk-shaped lens body identified by a top surface, a bottom surface and a contour surface, implementing a well-shaped concavity in the inside of the lens body identified by a ceiling surface and a cylindrical sidewall portion in succession to the ceiling surface, the concavity being aligned to the top surface from the bottom surface along an optical axis of the lens body so as to install the light source, a distance between the ceiling surface of the concavity and the top surface along the optical axis is larger than a radius of curvature of the top surface; and
a power supply unit connected respectively to the light-emitting units, configured to supply electric power to each of the light sources,wherein a gap is provided between the light source and the cylindrical sidewall portion.
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Abstract
The lens embraces a bulk-shaped lens body identified by a top surface, a bottom surface and a contour surface, and a well-shaped concavity is implemented in the inside of the lens body, aligned from the bottom surface toward the top surface. The lens body has geometry such as bullet-shape or egg-shape. A ceiling surface of concavity implemented in the lens body serves as a first lens surface, the top surface of the lens body serves as the second lens surface, and inside of the concavity serves as a storing cavity of a light source or a photodetector.
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Citations
19 Claims
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1. A lighting equipment comprising:
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a plurality of light-emitting units, each of the light-emitting units comprising; a light source, and a bulk-shaped lens body identified by a top surface, a bottom surface and a contour surface, implementing a well-shaped concavity in the inside of the lens body identified by a ceiling surface and a cylindrical sidewall portion in succession to the ceiling surface, the concavity being aligned to the top surface from the bottom surface along an optical axis of the lens body so as to install the light source, a distance between the ceiling surface of the concavity and the top surface along the optical axis is larger than a radius of curvature of the top surface; and a power supply unit connected respectively to the light-emitting units, configured to supply electric power to each of the light sources, wherein a gap is provided between the light source and the cylindrical sidewall portion. - View Dependent Claims (2, 3, 4, 7, 8, 9, 10)
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5. A lighting equipment comprising:
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a plurality a light-emitting units, each of the light-emitting units comprising; a light source, and a bulk-shaped lens body identified by a top surface, a bottom surface and a contour surface, implementing a well-shaped concavity in the inside of the lens body, the concavity being aligned to the top surface from the bottom surface along an optical axis of the lens body so as to install the light source, a distance between a ceiling surface of the concavity and the top surface along the optical axis is larger than a radius of curvature of the top surface; and a power supply unit connected respectively to the light-emitting units, configured to supply electric power to each of the light sources, wherein, with the radius R of curvature of the top surface, overall length L measured along optical axis direction of the bulk-shaped lens, refractive index n of the bulk-shaped lens, following relationships are satisfied;
0.93<
k(R/L)<
1.06
k=1/(0.35 n−
0.168).
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6. A lighting equipment comprising:
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a plurality a light-emitting units, each of the light-emitting units comprising; a light source, and a bulk-shaped lens body identified by a top surface, a bottom surface and a contour surface, implementing a well-shaped concavity in the inside of the lens body, the concavity being aligned to the top surface from the bottom surface along an optical axis of the lens body so as to install the light source, a distance between a ceiling surface of the concavity and the top surface along the optical axis is larger than a radius of curvature of the top surface; and a power supply unit connected respectively to the light-emitting units, configured to supply electric power to each of the light sources, wherein, with protruding height Δ
established at the ceiling surface of each of the concavity, outside diameter 2Ro of the contour surface of each of corresponding lens body, following relationship is satisfied;
0.025<
Δ
/Ro<
0.075.
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11. A lighting equipment comprising:
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a plurality of light-emitting units, each of the light-emitting units comprising; a light source, and a bulk-shaped lens body identified by a top surface, a bottom surface and a contour surface, implementing a well-shaped concavity in the inside of the lens body identified by a ceiling surface and a cylindrical sidewall portion in succession to the ceiling surface, the concavity being aligned to the top surface from the bottom surface along an optical axis of the lens body so as to install the light source, an outside diameter of the contour surface is larger than 3 times and smaller than 10 times of an inside diameter of the concavity; and a power supply unit connected respectively to the light-emitting units, configured to supply electric power to each of the light sources, wherein a gap is provided between the light source and the cylindrical sidewall portion. - View Dependent Claims (12, 13, 16, 17, 18, 19)
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14. A lighting equipment comprising:
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a plurality of light-emitting units, each of the light-emitting units comprising; a light source, and a bulk-shaped lens body identified by a top surface, a bottom surface and a contour surface, implementing a well-shaped concavity in the inside of the lens body, the concavity being aligned to the top surface from the bottom surface along an optical axis of the lens body so as to install the light source, an outside diameter of the contour surface is larger than 3 times and smaller than 10 times of an inside diameter of the concavity; and a power supply unit connected respectively to the light-emitting units, configured to supply electric power to each of the light sources, wherein, with the radius R of curvature of the top surface, overall length L measured along optical axis direction of the bulk-shaped lens, refractive index n of the bulk-shaped lens, following relationships are satisfied;
0.93<
k(R/L)<
1.06
k=1/(0.35 n−
0.168).
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15. A lighting equipment comprising:
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a plurality of light-emitting units, each of the light-emitting units comprising; a light source, and a bulk-shaped lens body identified by a top surface, a bottom surface and a contour surface, implementing a well-shaped concavity in the inside of the lens body, the concavity being aligned to the top surface from the bottom surface along an optical axis of the lens body so as to install the light source, an outside diameter of the contour surface is larger than 3 times and smaller than 10 times of an inside diameter of the concavity; and a power supply unit connected respectively to the light-emitting units, configured to supply electric power to each of the light sources, wherein, with protruding height Δ
established at the ceiling surface of each of the concavity, outside diameter 2Ro of the contour surface of each of corresponding lens body, following relationship is satisfied;
0.025<
Δ
/Ro<
0.075.
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Specification