LED lamp for producing biologically-corrected light
First Claim
1. A biologically-corrected LED lamp, having a color rendering index above 70 and a color temperature between about 2,700K and about 3,500K, wherein the lamp produces a spectral power distribution that increases spectral opponency to thereby minimize melatonin suppression, comprising:
- a plurality of LED chips;
a driver circuit electrically coupled to the plurality of LED chips, wherein the driver circuit is configured to drive the plurality of LED chips with a ripple current at frequencies greater than 200 Hz; and
an optic diffusing element surrounding the plurality of LED chips, wherein the optic diffusing element has a color filter applied thereto, and wherein the color filter is configured to increase spectral opponency to thereby decrease a melatonin suppressive effect of a light output from the plurality of LED chips.
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Accused Products
Abstract
A light-emitting diode (LED) lamp for producing a biologically-corrected light. In one embodiment, the LED lamp includes a color filter, which modifies the light produced by the lamp'"'"'s LED chips, to increase spectral opponency and minimize melatonin suppression. In doing so, the lamp minimizes the biological effects that the lamp may have on a user. The LED lamp is appropriately designed to produce such biologically-correct light, while still maintaining a commercially acceptable color temperature and commercially acceptable color rending properties. Methods of manufacturing such a lamp are provided, as well as equivalent lamps and equivalent methods of manufacture.
56 Citations
29 Claims
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1. A biologically-corrected LED lamp, having a color rendering index above 70 and a color temperature between about 2,700K and about 3,500K, wherein the lamp produces a spectral power distribution that increases spectral opponency to thereby minimize melatonin suppression, comprising:
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a plurality of LED chips; a driver circuit electrically coupled to the plurality of LED chips, wherein the driver circuit is configured to drive the plurality of LED chips with a ripple current at frequencies greater than 200 Hz; and an optic diffusing element surrounding the plurality of LED chips, wherein the optic diffusing element has a color filter applied thereto, and wherein the color filter is configured to increase spectral opponency to thereby decrease a melatonin suppressive effect of a light output from the plurality of LED chips. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An LED lamp, comprising:
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a housing; a driver circuit disposed within the housing; a plurality of LED chips electrically coupled to and driven by the driver circuit, wherein the plurality of LED chips produce a light output; and an optic element surrounding the plurality of LED chips, wherein the optic element has a color filter applied thereto, and wherein the color filter is configured to increase spectral opponency to thereby decrease a biological effect of the light output of the plurality of LED chips. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A lamp, comprising:
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a housing; a driver circuit disposed within the housing; at least one LED chip electrically coupled to and driven by the driver circuit to produce a light output; and means for increasing the spectral opponency of the light output to limit a biological effect of the light output. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27)
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28. A method of minimizing a biological effect produced by a white LED lamp, wherein the LED lamp includes a housing, a driver circuit disposed within the housing, a plurality of LED chips electrically coupled to and driven by the driver circuit, wherein the plurality of LED chips produce a light output, and an optic element surrounding the plurality of LED chips, comprising:
applying to the optic element a color filter configured to increase spectral opponency. - View Dependent Claims (29)
Specification