Light emitting device
AssigneeNichia Corporation
InventorsShota Murakami, Soichiro Miura
Life of this patent
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Abstract
A base includes: a bottom part having a bottom face, wherein the bottom face has a first region configured to support one or more semiconductor laser elements thereon and a second region configured to support a light reflective member and/or an optical member thereon; a lateral part surrounding the bottom face and extending upwards from the bottom face, wherein the lateral part has an uppermost face and includes a first stepped portion including a first upper face and a second stepped portion including a second upper face, wherein the first stepped portion faces the second stepped portion, and wherein the first upper face and the second upper face are disposed below the uppermost face; and one or more first metal films located on the first upper face of the first stepped portion.
Claims10
A light emitting device comprising:
- one or more semiconductor laser elements configured to emit light along one or more respective optical axes;
- at least one of:
- a lens member comprising at least one lens, and/or
- a light reflective member configured to reflect at least 90% of light emitted from the one or more semiconductor laser elements;
- a base comprising:
- a bottom part that has a bottom face including a first region on which the one or more semiconductor laser elements are disposed and a second region on which the lens member and/or the light reflective member are disposed, and
- a lateral part that surrounds the bottom face and extends upwards from the bottom face, wherein the lateral part has an uppermost face and comprises:
- a first stepped portion including a first upper face, and
- a second stepped portion including a second upper face, wherein;
- the first stepped portion faces the second stepped portion, and
- the first upper face and the second upper face are disposed below the uppermost face;
- and
- one or more first metal films located on the first upper face of the first stepped portion, wherein:
- in a top view:
- the first upper face and the second upper face are disposed inward of the uppermost face,
- a portion of the first upper face is located in front of the one or more semiconductor laser elements on the one or more respective optical axes,
- a portion of the second upper face is located behind the one or more semiconductor laser elements on the one or more respective optical axes,
- the second region is spaced apart from the first region on the one or more respective optical axes,
- the first upper face is spaced apart from the second upper face on the one or more respective optical axes, and
- the first region and the second region are disposed between the first upper face and the second upper face on the one or more respective optical axes.
A light emitting device comprising:
- one or more semiconductor laser elements;
- at least one of:
- a lens member comprising at least one lens, and/or
- a light reflective member configured to reflect at least 90% of light emitted from the one or more semiconductor laser elements;
- a base having a rectangular periphery and comprising:
- a bottom part that has a bottom face including a first region on which the one or more semiconductor laser elements are disposed and a second region on which the lens member and/or the light reflective member are disposed, and
- a lateral part that surrounds the bottom face and extends upwards from the bottom face, wherein the lateral part has an uppermost face and comprises:
- a first stepped portion including a first upper face, and
- a second stepped portion including a second upper face,
- a third stepped portion including a third upper face, and
- a fourth stepped portion including a fourth upper face, wherein:
- the first stepped portion faces the second stepped portion,
- the third stepped portion faces the fourth stepped portion, and
- the first upper face, the second upper face, the third upper face, and
- the fourth upper face are disposed below the uppermost face;
- and
- one or more first metal films located on the first upper face of the first stepped portion, wherein:
- in a top view
- the first upper face, the second upper face, the third upper surface, and the fourth upper face are disposed inward of the uppermost face,
- the second region is spaced apart from the first region in a first direction,
- the first upper face is spaced apart from the second upper face in the first direction,
- the first region and the second region are disposed between the first upper face and the second upper face,
- the first region and the second region are disposed between the third upper face and the fourth upper face,
- the first upper face is directly adjacent to the third upper face and the fourth upper face, and
- the second upper face is directly adjacent to the third upper face and the fourth upper face.
Dependencies are inferred from the claim text.