LIGHT-EMITTING DIODE ILLUMINATION STRUCTURES
First Claim
1. An illumination device, comprising:
- a primary light source;
a secondary light source arranged to provide secondary emitted light in excited response to primary emitted light from said primary light source; and
a redirector positioned to redirect at least a portion of said primary emitted light to excite further generation of said secondary emitted light.
5 Assignments
0 Petitions
Accused Products
Abstract
Illumination device embodiments are provided which include a transparent bulb that carries at least one phosphor. A redirector is positioned within the bulb and at least one light-emitting diode (LED) is positioned over the redirector to be energized and emit light that excites the phosphor. The redirector helps to diffuse the resultant mix of LED-emitted light and phosphor-emitted light that issues from the device. The redirector also provides a heat path away from the LEDs. In a device embodiment, LEDS form first and second diode groups that have emission peaks in different regions. Selectively energizing these groups alters the color temperature of the device'"'"'s light. Energizing both groups and varying currents of each group also alters the color temperature of the device'"'"'s light. In other device embodiments, the redirector has a portion outside the bulb which may also define protuberances that enhance heat radiation. In yet other device embodiments, each LED may have an associated phosphor. Some embodiments may be further enhanced by the further addition of a phosphor to the bulb.
68 Citations
31 Claims
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1. An illumination device, comprising:
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a primary light source; a secondary light source arranged to provide secondary emitted light in excited response to primary emitted light from said primary light source; and a redirector positioned to redirect at least a portion of said primary emitted light to excite further generation of said secondary emitted light. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An illumination device, comprising:
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a secondary light source; a redirector; and a primary light source positioned to emit primary emitted light between said redirector and said secondary light source to excite generation of secondary emitted light from said secondary light source. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. An illumination device, comprising:
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a bulb; at least one phosphor carried by said bulb; a redirector within said bulb; and at least one light-emitting diode positioned between said bulb and said redirector to provide diode-emitted light that excites phosphor-emitted light from said phosphor. - View Dependent Claims (18, 19, 20, 21, 22, 23)
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24. An illumination device, comprising:
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a bulb; a base; a redirector coupled to said base and configured to carry said bulb; and at least one light-emitting diode carried by said redirector and positioned beneath said bulb. - View Dependent Claims (25, 26, 27, 28)
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29. An illumination method, comprising the steps of:
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directing an emitted light across a void; in excited response to said emitted light, generating an excited light, and redirecting at least a portion of at least one of said emitted and excited lights to enhance at least one of said directing and generating steps. - View Dependent Claims (30, 31)
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Specification