Detecting device and measuring device
AssigneeSeiko Epson Corporation
InventorsTakefumi Fukagawa, Takashi Tajiri
Life of this patent
Estimating the term…
Abstract
A detecting device of the present disclosure includes a light emitting portion that emits light and a light receiving portion including an angle limiting member that limits an angle of incidence of light from the light emitting portion, wherein the light receiving portion has a first light receiving region and a second light receiving region that is spaced further from the light emitting portion than the first light receiving region is, the angle limiting member includes a first limiting region corresponding to the first light receiving region and a second limiting region corresponding to the second light receiving region, and the degree of angle limitation of the second limiting region is smaller than the degree of angle limitation of the first limiting region.
Claims11
A detecting device comprising:
- a light source that emits a light;
- and
- a light receiving unit that includes:
- a sensor having a first light receiving region and a second light receiving region farther away from the light source than the first light receiving region, and
- an angle limiting member having a first limiting region corresponding to the first light receiving region and a second limiting region corresponding to the second light receiving region,
- wherein a degree of angle limitation of the second limiting region is smaller than a degree of angle limitation of the first limiting region,
- wherein, when a direction in which the light source and the light receiving unit are aligned is defined as a first direction, the angle limiting member includes a plurality of light shielding walls provided at the light receiving unit, and
- a height of the light shielding walls aligned in the first direction in the second limiting region is less than a height of the light shielding walls aligned in the first direction in the first limiting region.
A detecting device comprising:
- a light source that emits a light to a living body;
- a light receiving unit that is aligned in a first direction with respect to the light source and that receives the light from the living body;
- and
- a plurality of light shielding walls that are aligned in the first direction and that limit an angle of incidence of light on the light receiving unit,
- wherein a distance between the light shielding walls in a region far from the light source is larger than a distance between the light shielding walls in a region close to the light source,
- wherein, when a direction in which the light source and the light receiving unit are aligned is defined as a first direction, and
- a height of the light shielding walls aligned in the first direction in the region far from the light source is less than a height of the light shielding walls aligned in the first direction in the region close to the light source.
Dependencies are inferred from the claim text.