SEMICONDUCTOR LIGHT-EMITTING APPARATUS
First Claim
1. A semiconductor light-emitting apparatus comprising:
- a semiconductor light-emitting device operable to emit primary light having a peak wavelength in a visible region; and
a wavelength converter operable to (a) convert a portion of the primary light into secondary light having a longer peak wavelength in the visible region than the peak wavelength and (b) emit the secondary light in combination with a remainder of the primary light left unconverted, whereinthe wavelength converter includes;
a main body that extends across a path of light emitted from the semiconductor light-emitting device; and
a plurality of light waveguide parts each being a columnar protrusion formed on a part of the main body located in a direction in which the light exits, whereina top end surface of each light waveguide part emits a color mixture of the remainder of the primary light and the secondary light.
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Accused Products
Abstract
A blue LED 18 that is a semiconductor light-emitting device and that emits blue light as primary light having a peak wavelength in a visible region and a phosphor plate 30 that is a wavelength converter and that converts a portion of the blue light emitted from the blue LED 18 into yellow light as secondary light having a longer peak wavelength in the visible region than the peak wavelength and emits the yellow light in combination with a remainder of the blue light left unconverted. The phosphor plate 30 includes (a) a main body 39 extending across a light-emission path of the blue LED 18 and (b) a light-emitting part 42 composed of a plurality of columnar protrusions 44 on a part of the main body 39 in a direction in which the light exits.
62 Citations
14 Claims
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1. A semiconductor light-emitting apparatus comprising:
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a semiconductor light-emitting device operable to emit primary light having a peak wavelength in a visible region; and a wavelength converter operable to (a) convert a portion of the primary light into secondary light having a longer peak wavelength in the visible region than the peak wavelength and (b) emit the secondary light in combination with a remainder of the primary light left unconverted, wherein the wavelength converter includes; a main body that extends across a path of light emitted from the semiconductor light-emitting device; and a plurality of light waveguide parts each being a columnar protrusion formed on a part of the main body located in a direction in which the light exits, wherein a top end surface of each light waveguide part emits a color mixture of the remainder of the primary light and the secondary light. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification
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- Resources
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Current AssigneePanasonic Corporation (Panasonic Holdings Corporation)
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Original AssigneePanasonic Corporation (Panasonic Holdings Corporation)
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InventorsUeno, Yasuharu, Nagai, Hideo
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Granted Patent
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Time in Patent OfficeDays
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Field of Search
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US Class Current362/293
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CPC Class CodesH01L 2224/48091 ArchedH01L 2924/00014 the subject-matter covered ...H01L 2933/0083 Periodic patterns for optic...H01L 2933/0091 Scattering means in or on t...H01L 33/505 characterised by the shape,...H01L 33/508 having a non-uniform spatia...
