Light emitting device, optical device, and information processing apparatus
A light emitting device includes a wiring substrate, a light emitting element array that includes a first side surface and a second side surface facing each other, and a third side surface and a fourth side surface connecting the first side surface and the second side surface to each other and facing each other, the light emitting element array being provided on the wiring substrate, a driving element that is provided on the wiring substrate on the first side surface side and drives the light emitting element array, a first circuit element and a second circuit element that are provided on the wiring substrate on the second side surface side to be arranged in a direction along the second side surface, and a wiring member that is provided on the third side surface side and the fourth side surface side and extends from a top electrode of the light emitting element array toward an outside of the light emitting element array.
1. A light emitting device comprising:
a wiring substrate;
a light emitting element array that includes a first side surface and a second side surface facing each other, and a third side surface and a fourth side surface connecting the first side surface and the second side surface to each other and facing each other, the light emitting element array being provided on the wiring substrate;
a driving element that is provided on the wiring substrate on the first side surface side and drives the light emitting element array;
a first circuit element and a second circuit element that are provided on the wiring substrate on the second side surface side to be arranged in a direction along the second side surface; and
a wiring member that is provided on the third side surface side and the fourth side surface side and extends from a top electrode of the light emitting element array toward an outside of the light emitting element array.
2. The light emitting device according to claim 1 ,
wherein at least one of the first circuit element or the second circuit element is a light receiving element that receives light emitted by the light emitting element array.
3. The light emitting device according to claim 1 ,
wherein at least one of the first circuit element or the second circuit element is a temperature detection element that detects a temperature of the light emitting element array.
4. The light emitting device according to claim 1 ,
wherein the wiring member that extends from the top electrode of the light emitting element array toward the outside of the light emitting element array is not provided between the second side surface, and the first circuit element and the second circuit element.
5. The light emitting device according to claim 2 ,
wherein the wiring member that extends from the top electrode of the light emitting element array toward the outside of the light emitting element array is not provided between the second side surface, and the first circuit element and the second circuit element.
6. The light emitting device according to claim 3 ,
wherein the wiring member that extends from the top electrode of the light emitting element array toward the outside of the light emitting element array is not provided between the second side surface, and the first circuit element and the second circuit element.
7. The light emitting device according to claim 1 ,
wherein each of the first circuit element and the second circuit element includes a plurality of terminals,
the first circuit element is disposed closer to the third side surface side than the second circuit element,
a wiring connected to each of the plurality of terminals in the first circuit element is led to the third side surface side,
the second circuit element is disposed closer to the fourth side surface side than the first circuit element, and
a wiring connected to each of the plurality of terminals in the second circuit element is led to the fourth side surface side.
8. The light emitting device according to claim 2 ,
wherein each of the first circuit element and the second circuit element includes a plurality of terminals,
the first circuit element is disposed closer to the third side surface side than the second circuit element,
a wiring connected to each of the plurality of terminals in the first circuit element is led to the third side surface side,
the second circuit element is disposed closer to the fourth side surface side than the first circuit element, and
a wiring connected to each of the plurality of terminals in the second circuit element is led to the fourth side surface side.
9. The light emitting device according to claim 3 ,
wherein each of the first circuit element and the second circuit element includes a plurality of terminals,
the first circuit element is disposed closer to the third side surface side than the second circuit element,
a wiring connected to each of the plurality of terminals in the first circuit element is led to the third side surface side,
the second circuit element is disposed closer to the fourth side surface side than the first circuit element, and
a wiring connected to each of the plurality of terminals in the second circuit element is led to the fourth side surface side.
10. The light emitting device according to claim 4 ,
wherein each of the first circuit element and the second circuit element includes a plurality of terminals,
the first circuit element is disposed closer to the third side surface side than the second circuit element,
a wiring connected to each of the plurality of terminals in the first circuit element is led to the third side surface side,
the second circuit element is disposed closer to the fourth side surface side than the first circuit element, and
a wiring connected to each of the plurality of terminals in the second circuit element is led to the fourth side surface side.
11. The light emitting device according to claim 1 ,
wherein a light diffusion member that diffuses light emitted from the light emitting element array outward is provided on an emission path of the light emitting element array.
12. The light emitting device according to claim 2 ,
wherein a light diffusion member that diffuses light emitted from the light emitting element array outward is provided on an emission path of the light emitting element array.
13. The light emitting device according to claim 3 ,
wherein a light diffusion member that diffuses light emitted from the light emitting element array outward is provided on an emission path of the light emitting element array.
14. The light emitting device according to claim 11 ,
wherein at least one of the first circuit element or the second circuit element is a light receiving element that receives light emitted by the light emitting element array, and
the light diffusion member is provided at a position overlapping the light emitting element array and the light receiving element in plan view.
15. The light emitting device according to claim 1 ,
wherein the light emitting element array includes a plurality of light emitting elements connected in parallel to each other.
16. The light emitting device according to claim 1 ,
wherein the light emitting element array is a VCSEL array.
17. The light emitting device according to claim 1 ,
further comprising a diffractive optical element that diffracts light emitted from the light emitting element array on an emission path of the light emitting element array.
18. An optical device comprising:
the light emitting device according to claim 1 ; and
a light receiving unit that receives reflection light which is reflected by a measurement target after being emitted from the light emitting element array of the light emitting device,
wherein the light receiving unit outputs a signal corresponding to a period from emission of the light from the light emitting element array until the light receiving unit receives light.
19. An information processing apparatus comprising:
the optical device according to claim 18 ; and
a shape specifying unit that specifies a three-dimensional shape of a measurement target based on reflection light which is reflected by a measurement target after being emitted from the light emitting element array of the optical device, and is received by the light receiving unit of the optical device.
20. The information processing apparatus according to claim 19 , further comprising:
an authentication processing unit that performs authentication processing for use of the information processing apparatus based on a result obtained by specification of the shape specifying unit.