Solid state lamp with light directing optics and diffuser
First Claim
1. A solid state lamp, comprising:
- an array of solid state emitters on a carrier;
a three-dimensional reflective optical element modifying the emission pattern of said array to produce a more omni-directional lamp emission pattern, said optical element comprising a bottom section and a top section comprising a reflective top outer surface, wherein a portion of said bottom section is adjacent to said carrier, wherein said reflective top outer surface spreads from said bottom section over said array of solid state emitters;
wherein said reflective top outer surface comprises a specular reflector and is not configured to operate by total internal reflection on light from said array; and
wherein said reflective top outer surface comprises two or more sections separated by at least one space, such that light from said array of solid state emitters can pass through said at least one space.
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Accused Products
Abstract
Lamps and bulbs are disclosed generally comprising different combinations and arrangements of a light source, a reflective optical element, and a separate diffusing layer. This arrangement allows for the fabrication of lamps and bulbs that are efficient, reliable and cost effective and can provide an essentially omni-directional emission pattern, even with a light source comprised of an arrangement of LEDs. The lamps according to the present invention can also comprise thermal management features that provide for efficient dissipation of heat from the LEDs, which in turn allows the LEDs to operate at lower temperatures. The lamps can also comprise optical elements to help change the emission pattern from the generally directional pattern of the LEDs to a more omni-directional pattern.
309 Citations
79 Claims
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1. A solid state lamp, comprising:
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an array of solid state emitters on a carrier; a three-dimensional reflective optical element modifying the emission pattern of said array to produce a more omni-directional lamp emission pattern, said optical element comprising a bottom section and a top section comprising a reflective top outer surface, wherein a portion of said bottom section is adjacent to said carrier, wherein said reflective top outer surface spreads from said bottom section over said array of solid state emitters; wherein said reflective top outer surface comprises a specular reflector and is not configured to operate by total internal reflection on light from said array; and wherein said reflective top outer surface comprises two or more sections separated by at least one space, such that light from said array of solid state emitters can pass through said at least one space. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57)
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58. A three-dimensional optical element for use in a solid state lamp, said optical element comprising:
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a top section comprising a reflective top outer surface; and a bottom section, wherein said reflective top outer surface spreads from said bottom section such that said optical element has a tapered outer profile, and wherein said reflective top outer surface comprises an opaque material to reflect light from a solid state emitter; and wherein said reflective top outer surface comprises two or more sections separated by at least one space, such that light can pass through said at least one space. - View Dependent Claims (59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 77, 78, 79)
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69. A three-dimensional optical element for use in a solid state lamp, said optical element comprising:
a bottom section, and a top section integral with said bottom section and spreading from said bottom section, said top section comprising a series of blades with open spaces between and through adjacent ones of said blades, an outside surface of each of said blades being reflective. - View Dependent Claims (70, 71, 72, 73, 74, 75, 76)
Specification