Bent focal line lighting device
First Claim
1. A lighting device comprisinga plurality of light sources disposed in a common horizontal plane about a vertical axis, each said light source including a light emitting diode element in said horizontal plane for emitting a light in a diverging pattern about said horizontal plane;
- anda curved optical lens disposed about said vertical axis and intersecting said horizontal plane, said lens having a plurality of focal points for effecting a concentration of light from said light sources about said horizontal plane, each said focal point being disposed in a vertical plane passing through said vertical axis perpendicularly of said horizontal plane;
whereineach said light emitting diode element is positioned in a respective vertical plane at a greater distance from said vertical axis than said respective focal point in said respective vertical plane to minimize divergence of light from said respective light emitting diode element about said horizontal plane.
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Accused Products
Abstract
A bent focal line electronic lighting device for use as a signal or illuminator. Light is created by a plurality of light emitting diode elements. An optic contoured to create a plurality of focal points which form a bent or crooked focal line cooperate with the orientation of the light emitting diode elements to project a composite light beam with limited divergence about a first reference plane. The intensity of the projected light beam is maximized through the efficient collection of created light.
102 Citations
23 Claims
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1. A lighting device comprising
a plurality of light sources disposed in a common horizontal plane about a vertical axis, each said light source including a light emitting diode element in said horizontal plane for emitting a light in a diverging pattern about said horizontal plane; - and
a curved optical lens disposed about said vertical axis and intersecting said horizontal plane, said lens having a plurality of focal points for effecting a concentration of light from said light sources about said horizontal plane, each said focal point being disposed in a vertical plane passing through said vertical axis perpendicularly of said horizontal plane;
whereineach said light emitting diode element is positioned in a respective vertical plane at a greater distance from said vertical axis than said respective focal point in said respective vertical plane to minimize divergence of light from said respective light emitting diode element about said horizontal plane. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A lighting device comprising
a plurality of light sources disposed in a common horizontal plane and spaced about a vertical axis for emitting a light in a diverging pattern about said horizontal plane, each said light source including a light emitting diode element disposed in a vertical plane coincident with said vertical axis; - and
a lens disposed about said vertical axis and intersecting said horizontal plane, said lens having a point in each said vertical plane for each said light source for maximizing a concentration of light from said light source in said respective vertical plane about said horizontal plane;
whereineach said light source is located at a greater distance from said vertical axis than said respective point to decrease said concentration of light in said vertical plane while increasing a concentration of the total light from said light source about said horizontal plane. - View Dependent Claims (13, 14, 19)
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15. In a lighting device, the combination comprising
at least one light source disposed in a horizontal plane in spaced relation to a vertical axis for emitting a light in a diverging pattern about said horizontal plane, said light source including a light emitting diode in a vertical plane coincident with said vertical axis; - and
a lens spaced from said vertical axis and intersecting said horizontal plane, said lens having a point for maximizing a concentration of light from said light source in said vertical plane about said horizontal plane;
whereinsaid light source is located at a greater distance from said vertical axis than said point to decrease the concentration of light in said vertical plane from said light emitting diode element about said horizontal plane while increasing a concentration of the total light from said light source about said horizontal plane. - View Dependent Claims (16, 17)
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18. In a lighting device, the combination comprising
at least one light source disposed in a horizontal plane in spaced relation to a vertical axis, said light source including a light emitting diode element in said horizontal plane for emitting a light in a diverging pattern about said horizontal plane; - and
an optical lens spaced from said vertical axis and intersecting said horizontal plane, said lens having a focal point for effecting a concentration of light from said light source about said horizontal plane, said focal point being disposed in a vertical plane passing through said vertical axis perpendicularly of said horizontal plane;
whereinsaid light emitting diode element is positioned in a respective vertical plane at a greater distance from said vertical axis than said focal point in said respective vertical plane to minimize divergence of light from said respective light emitting diode element about said horizontal plane. - View Dependent Claims (20, 21, 22, 23)
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Specification