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US 12,710,536 B2Granted
Surface-emitting laser device and distance measurement device having same
AssigneeLG Innotek Co., Ltd.
InventorsSang Heon Han, Kang Yeol Park, Jae Hoon Lee, Yong Gyeong Lee
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Abstract
A surface-emitting laser device disclosed in an embodiment of the invention includes a first region in which a plurality of first emitters is arranged; and a second region in which a plurality of second emitters is arranged, an area of the second region is smaller than an area of the first region, and the second region is disposed in a center region of the first region, and the first emitter and the second emitter may be driven separately.
Claims15
A surface-emitting laser device comprising:
- a first region in which a first subset of a plurality of first emitters are arranged;
- a second region in which a second subset of the plurality of first emitters and a plurality of second emitters are arranged;
- a first pad disposed outside the first region and electrically connected to the plurality of first emitters of the first and second regions;
- and
- a second pad disposed outside the first region and electrically connected to the plurality of second emitters,
- wherein an area of the second region is 30% or less of an area of the first region,
- wherein the second region is disposed in a center region at least partially surrounded by the first region,
- wherein a first emitter among the plurality of first emitters and a second emitter among the plurality of second emitters are separately driven,
- wherein the plurality of second emitters in the second region are arranged in a first direction and a second direction orthogonal to each other,
- wherein the second subset of the plurality of first emitters in the second region are arranged in the first direction and the second direction,
- wherein each second emitter of the plurality of second emitters is disposed between adjacent first emitters of the second subset arranged in the first and second directions in the second region, and
- wherein a pitch in the first direction between adjacent first emitters of the second subset in the second region is the same as a pitch in the second direction between adjacent second emitters of the plurality of second emitters in the second region.
9 more elements
A surface-emitting laser device comprising:
- a first light emitting portion having rows O and columns P and in which a first subset of a plurality of first emitters irradiating light in an infrared region are arranged;
- at least one second light emitting portion having M rows and N columns and in which a second subset of the plurality of first emitters and a plurality of second emitters for irradiating light in the infrared region are arranged,
- a first pad disposed outside the first light emitting portion and electrically connected to the plurality of first emitters of the first and second light emitting portions;
- and
- a second pad disposed outside the first light emitting portion and electrically connected to the plurality of second emitters,
- wherein an area of the second light emitting portion in which the plurality of second emitters are disposed is smaller than an area of the first light emitting portion,
- wherein a number of the plurality of second emitters disposed in the second light emitting portion is smaller than a number of the first subset of first emitters disposed in the first light emitting portion,
- wherein the second light emitting portion is disposed in a center region at least partially surrounded by the first light emitting portion,
- wherein a first emitter among the plurality of first emitters and a second emitter among the plurality of second emitters are driven separately,
- wherein O, P, M, N are integers, and have a relationship of O>P>M>N,
- wherein the plurality of first emitters in the first and second light emitting portions are arranged in first and second directions orthogonal to each other,
- wherein the second subset of the plurality of first emitters and the plurality of second emitters in the second light emitting portion are arranged in the first and second directions,
- wherein a pitch in the first and second directions between an adjacent first emitter of the second subset and a second emitter of the plurality of second emitters is smaller than a pitch in the first and second directions between adjacent first emitters of the first subset, and
- wherein an angle of view of the first light emitting portion and an angle of view of the second light emitting portion are different from each other.
11 more elements
Dependencies are inferred from the claim text.