Light emitting diode device having a shield and/or filter
First Claim
Patent Images
1. A light emitting diode device comprising:
- a housing;
a LED chip mounted to the housing, the LED chip generating light;
a casing connected to the housing and encapsulating the LED chip; and
an optical layer positioned in front of the LED chip and behind the casing, the optical layer including a material having light transmission properties which change in response to electricity being supplied to the optical layer.
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Abstract
A light emitting diode device capable of shielding or filtering the light in a manner to provide high-gradient edges or regions within the beam pattern. The LED device is also capable of providing selective coloring, thereby cost effectively improving the adaptability and number of applications which can utilize the LED device. The LED device includes an optical layer is positioned in front of a LED chip that includes a material having light transmission properties which change in response to electricity being supplied to the optical layer. The optical layer can thus transmit or absorb light from the LED chip, thus shielding or filtering light from the LED chip.
181 Citations
18 Claims
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1. A light emitting diode device comprising:
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a housing; a LED chip mounted to the housing, the LED chip generating light; a casing connected to the housing and encapsulating the LED chip; and an optical layer positioned in front of the LED chip and behind the casing, the optical layer including a material having light transmission properties which change in response to electricity being supplied to the optical layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A light emitting diode device comprising:
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a housing; a LED chip mounted to the housing, the LED chip generating light; and an optical layer positioned in front of the LED chip, the optical layer including a material having light transmission properties which change in response to electricity being supplied to the optical layer, wherein the optical layer covers all edges of the LED chip.
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Specification