Light emitting diode signaling device and method of providing an indication using the same
First Claim
1. An LED signaling device, comprising:
- a back plate;
a circuit board coupled to said back plate, said circuit board having a first surface with a number of LEDs arranged in a pattern thereon;
a reflector coupled to at least one of said back plate and said circuit board, said reflector having a number of reflective cavities each with an associated output angle, wherein at least some of said reflective cavities are arranged in said pattern and are structured to receive at least one of said LEDs therein;
a first lens coupled to at least one of said back plate, said circuit board, and said reflector, said first lens being located a first distance from said first surface; and
a second lens, coupled to at least one of said back plate, said circuit board, said reflector, and said first lens, said second lens being located a second distance from said first surface.
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Accused Products
Abstract
An improved LED signaling device employing a number of LEDs arranged in a specific pattern. At least some of the LEDs are received in a corresponding reflective cavity with an associated output angle. The LED signaling device also employs first and second lenses. The first lens collects the light emitted by the LEDs and disperses the light such that the second lens is flooded. The second lens collects the light dispersed by the first lens and collimates the light. The type of LEDs used, their specific pattern, the specific output angles of their corresponding reflective cavities, and the combination of the first and second lenses insure that the LED signaling device meets or exceeds the minimum luminous output intensity requirements and uniformity requirements.
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Citations
26 Claims
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1. An LED signaling device, comprising:
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a back plate; a circuit board coupled to said back plate, said circuit board having a first surface with a number of LEDs arranged in a pattern thereon; a reflector coupled to at least one of said back plate and said circuit board, said reflector having a number of reflective cavities each with an associated output angle, wherein at least some of said reflective cavities are arranged in said pattern and are structured to receive at least one of said LEDs therein; a first lens coupled to at least one of said back plate, said circuit board, and said reflector, said first lens being located a first distance from said first surface; and a second lens, coupled to at least one of said back plate, said circuit board, said reflector, and said first lens, said second lens being located a second distance from said first surface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method for providing an indication with an LED signaling device, comprising:
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activating a number of LEDs to produce a plurality of light rays, wherein said LEDs are arranged in a pattern, and wherein each of at least some of said LEDs are associated with a respective one of a plurality of reflective cavities each having an associated output angle; dispersing said light rays with a first lens; and collimating said light rays dispersed by said first lens with a second lens. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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Specification