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US 9,425,235 B2Granted
Light emitting device including resin package having differently curved parts
AssigneeNichia Corporation
InventorsToshimasa Takao, Takeo Kurimoto
Life of this patent
Estimating the term…
Abstract
A light emitting device, having: a first light emitting element and a second light emitting element; and a resin package equipped with an opening having a reflective wall that widens toward the upper face, the opening comprises at least first and second curved parts having different radiuses at the resin package upper face, and the radius of the first curved part disposed near the first light emitting element is greater than the radius of the second curved part disposed near the second light emitting element.
Claims21
A light emitting device comprising:
- a first light emitting element and a second light emitting element;
- and
- a resin package equipped with an opening having a reflective wall that widens toward a resin package upper face, wherein
- the opening comprises at least first and second curved parts having different radiuses of curvature at the resin package upper face, and third and fourth curved parts disposed at the resin package upper face,
- a radius of curvature of the first curved part disposed near the first light emitting element is greater than a radius of curvature of the second curved part disposed near the second light emitting element, and
- the radius of curvature of the first curved part is the same as a radius of curvature of the third curved part, and the radius of curvature of the second curved part is the same as a radius of curvature of the fourth curved part.
3 more elements
A light emitting device comprising:
- a first light emitting element and a second light emitting element;
- and
- a resin package equipped with an opening having a reflective wall that widens toward a resin package upper face, wherein
- the opening comprises at least first and second curved parts having different radiuses of curvature at the resin package upper face, wherein the first curved part is at a location symmetrical to a location of the second curved part and
- a radius of curvature of the first curved part disposed near the first light emitting element is greater than a radius of curvature of the second curved part disposed near the second light emitting element,
- the opening comprises at least two bottom curved parts of different radiuses of curvature on a bottom face of the opening,
- a radius of curvature of one of the bottom curved parts disposed near the first light emitting element is greater than a radius of curvature of one of the bottom curved parts disposed near the second light emitting element,
- the radius of curvature of the first curved part on the resin package upper face disposed near the first light emitting element is greater than the radius of curvature of the one of the bottom curved parts disposed near the first light emitting element at the bottom face of the opening, and
- the radius of curvature of the second curved part at the resin package upper face disposed near the second light emitting element is less than the radius of curvature of the one of the bottom curved parts disposed near the second light emitting element at the bottom face of the opening.
6 more elements
A light emitting device comprising:
- a first light emitting element and a second light emitting element;
- and
- a resin package equipped with an opening having a reflective wall that widens toward a resin package upper face, wherein
- the opening comprises at least first and second curved parts having different radiuses of curvature at the resin package upper face, and third and fourth curved parts disposed at the resin package upper face at symmetrical positions to the first and second curved parts, respectively, with respect to a layout direction of the first and second light emitting elements, with a first linear part being disposed between the first curved part and the third curved part and a second linear part being disposed between the second curved part and the fourth curved part, and
- a length of the first linear part is shorter than a length of the second linear part, and
- a radius of curvature of the first curved part disposed near the first light emitting element is greater than a radius of curvature of the second curved part disposed near the second light emitting element.
3 more elements
A light emitting device comprising:
- a first light emitting element and a second light emitting element;
- and
- a resin package equipped with an opening having a reflective wall that widens toward a resin package upper face, wherein
- the opening comprises at least first and second curved parts having different radiuses of curvature at the resin package upper face,
- a radius of curvature of the first curved part disposed near the first light emitting element is greater than a radius of curvature of the second curved part disposed near the second light emitting element,
- the opening comprises fifth and sixth curved parts having different radiuses of curvature at a bottom face of the opening, and seventh and eighth curved parts disposed at the bottom face of the opening at symmetrical positions to the fifth and sixth curved parts, respectively, with respect to a layout direction of the first and second light emitting elements, with a third linear part being disposed between the fifth curved part and the seventh curved part and a fourth linear part being disposed between the sixth curved part and the eighth curved part,
- the fifth and seventh curved parts are disposed near the first light emitting element and the sixth and eighth curved parts are disposed near the second light emitting element, and
- a length of the third linear part is shorter than a length of one side of the first light emitting element in plan view.
5 more elements
Dependencies are inferred from the claim text.