Light emitting apparatus and information processing apparatus
A light emitting apparatus includes a substrate and light emitting elements including at least one light emitting element that is provided, on the substrate, in each region of plural regions and that emits irradiation light toward a target object, the regions including a first region and a second region and being isolated from each other to be arranged one-dimensionally or two-dimensionally. In the plural regions, an irradiation light amount of at least one light emitting element provided in the first region that is a region located at an end in an arrangement direction is larger than an irradiation light amount of at least one light emitting element provided in the second region that is a region located at a place other than the end in the arrangement direction.
1. A light emitting apparatus comprising:
a substrate; and
light emitting elements including at least one light emitting element that is provided, on the substrate, in each region of a plurality of regions and that emits irradiation light toward a target object, the regions including a first region and a second region and being isolated from each other to be arranged one-dimensionally or two-dimensionally, wherein:
in the plurality of regions, an irradiation light amount of at least one light emitting element provided in the first region that is a region located at an end in an arrangement direction is larger than an irradiation light amount of at least one light emitting element provided in the second region that is a region located at a place other than the end in the arrangement direction,
wherein a number of light emitting elements disposed in the first region is less than a number of light emitting elements disposed in the second region, and an amount of current provided to the first region is equal to an amount of current provided to the second region.
2. The light emitting apparatus according to claim 1 , wherein the plurality of regions are isolated from each other by a trench formed on the substrate.
3. The light emitting apparatus according to claim 1 , wherein the irradiation light amount of the at least one light emitting element provided in the first region has a plurality of levels.
4. The light emitting apparatus according to claim 3 , wherein, when the plurality of regions are isolated from each other to be arranged two-dimensionally on the substrate, the irradiation light amount of at least one light emitting element provided at a corner in the first region is larger than the irradiation light amount of at least one light emitting element provided at a place other than the corner in the first region.
5. The light emitting apparatus according to claim 1 , wherein the plurality of regions have different areas in accordance with irradiation light amounts of the light emitting elements provided in the plurality of regions.
6. The light emitting apparatus according to claim 5 , wherein:
the first region has a smaller area than the second region, and
a substantially equal amount of current flows in the first region and the second region.
7. The light emitting apparatus according to claim 1 , wherein, after one of the at least one light emitting element provided in the first region or the at least one light emitting element provided in the second region emits the irradiation light toward the target object, another one of the at least one light emitting element provided in the first region or the at least one light emitting element provided in the second region emits the irradiation light toward the target object.
8. The light emitting apparatus according to claim 1 , wherein both the at least one light emitting element provided in the first region and the at least one light emitting element provided in the second region emit the irradiation light toward the target object at an identical timing.
9. The light emitting apparatus according to claim 1 , wherein:
the at least one light emitting element provided in each region of the plurality of regions includes a plurality of light emitting elements; and
each of the plurality of light emitting elements in a corresponding region of the plurality of regions emits the irradiation light toward the target object with a substantially equal irradiation light amount.
10. An information processing apparatus comprising:
the emitting apparatus according to claim 1 ;
a light receiving unit that receives reflection light, the reflection light being light emitted from the at least one light emitting element included in the light emitting apparatus and reflected on the target object; and
a determination unit that determines a three-dimensional shape of the target object by using the reflection light received by the light receiving unit.
11. The information processing apparatus according to claim 10 , wherein, depending on a processing content, the determination unit for determining the three-dimensional shape of the target object, the irradiation light amount of the at least one light emitting element provided in the first region and the irradiation light amount of the at least one light emitting element provided in the second region are changed in the light emitting apparatus.
12. The light emitting apparatus according to claim 1 , wherein a size of the first region is same as a size of the second region, and the number of light emitting elements disposed in the first region is less than the number of light emitting elements disposed in the second region.