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US 11,656,183 B2Granted
Light detection sensor, light detection device, sheet processing device, and light detection method
AssigneeGlory Ltd.
InventorsTakeshi Sato, Hiroshi Konishi, Yuuichirou Okui
Life of this patent
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Abstract
A light detection sensor includes a light source that irradiates a detection target with light, a rod lens that collects emitted light from the detection target, a first light receiving element that detects the emitted light that has passed through the rod lens, and a second light receiving element that detects the emitted light that has passed through the rod lens, at a position different from a position at which the first light receiving element detects the light.
Claims12
A light detection sensor, comprising:
- a light source that irradiates a detection target with light;
- a rod lens that collects afterglow phosphorescence from the detection target;
- a first light receiving element that detects the afterglow that has passed through the rod lens at a first time;
- and
- a second light receiving element that detects, at a second time different than the first time, the afterglow that has been emitted from a same position of the detection target as a position from which the afterglow detected by the first light receiving element had been emitted and has passed through the rod lens, at a position different from a position at which the first light receiving element detects the afterglow.
2 more elements
A light detection device, comprising:
- a light detection sensor including
- a light source that irradiates a detection target with light,
- a rod lens that collects afterglow phosphorescence from the detection target,
- a first light receiving element that detects the afterglow that has passed through the rod lens at a first time, and
- a second light receiving element that detects, at a second time different than the first time, the afterglow that has been emitted from a same position of the detection target as a position from which the afterglow detected by the first light receiving element had been emitted and has passed through the rod lens, at a position different from a position at which the first light receiving element detects the afterglow;
- a conveyor that transports a transported object;
- and
- circuitry configured to control the light detection sensor and the conveyor, wherein the first light receiving element and the second light receiving element are disposed side by side in a transport direction of the conveyor, wherein
- the circuitry is configured to control the first light receiving element and the second light receiving element to detect the afterglow from the detection target located at one position on the transported object.
6 more elements
A light detection device, comprising:
- a light detection sensor including
- a light source that irradiates a detection target with light,
- a rod lens that collects afterglow phosphorescence from the detection target,
- a first light receiving element that detects the afterglow that has passed through the rod lens at a first time, and
- a second light receiving element that detects, at different timings a second time different than the first time, the afterglow that has been emitted from a same position of the detection target as a position from which the afterglow detected by the first light receiving element had been emitted and has passed through the rod lens, at a position different from a position at which the first light receiving element detects the light afterglow;
- a conveyor that transports a transported object;
- and
- circuitry configured to control the light detection sensor and the conveyor, wherein the first light receiving element and the second light receiving element are disposed side by side in a transport direction of the conveyor, wherein
- the circuitry is configured to control the first light receiving element and the second light receiving element to detect the afterglow from the detection target located at one position on the transported object, and the circuitry is further configured to calculate a decay characteristic of the afterglow from the detection target located at the one position on the transported object.
6 more elements
A light detection method, comprising:
- transporting, by a conveyor, a transported object comprising a detection target;
- and
- controlling the conveyor and a light detection sensor comprising a first light receiving element and a second light receiving element disposed side by side in a transport direction of the transported object, wherein
- the controlling includes detecting afterglow phosphorescence with the first light receiving element at a first time and the second light receiving element at a second time different than the first time, the afterglow being emitted from the detection target while located at one position on the conveyor, the second light receiving element detecting the afterglow that has been emitted from a same position of the detection target as a position from which the afterglow detected by the first light receiving element had been emitted.
1 more element
Dependencies are inferred from the claim text.