Living Body Information Sensor
First Claim
1. A living body information sensor attachable to a living body, the living body information sensor comprising:
- a light emitting unit emitting light to the living body;
a light receiving unit receiving reflected light from the living body that is included in the light emitted by the light emitting unit to the living body, and outputting a signal according to intensity of the reflected light; and
a control device generating information about the living body based on the signal from the light receiving unit,the control devicecontrolling the light emitting unit to repeatedly turn on and off in an alternate manner, andsetting a total of a turn-on time of the light emitting unit in a prescribed time interval to be smaller when the living body information sensor is attached to the living body than when the living body information sensor is not attached to the living body.
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Accused Products
Abstract
The living body information sensor according to the present invention can be attached to a living body. A light emitting unit emits light to the living body. The light receiving unit receives reflected light from the living body that is included in the light emitted by the light emitting unit to the living body, and outputs a signal according to intensity of the reflected light. A control device generates information about the living body based on the signal from the light receiving unit. The control device controls the light emitting unit to turn on and off in an alternate manner. The control device sets a total of a turn-on time of the light emitting unit in a prescribed time interval to be smaller when the living body information sensor is attached to the living body than when the living body information sensor is not attached to the living body.
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Citations
19 Claims
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1. A living body information sensor attachable to a living body, the living body information sensor comprising:
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a light emitting unit emitting light to the living body; a light receiving unit receiving reflected light from the living body that is included in the light emitted by the light emitting unit to the living body, and outputting a signal according to intensity of the reflected light; and a control device generating information about the living body based on the signal from the light receiving unit, the control device controlling the light emitting unit to repeatedly turn on and off in an alternate manner, and setting a total of a turn-on time of the light emitting unit in a prescribed time interval to be smaller when the living body information sensor is attached to the living body than when the living body information sensor is not attached to the living body. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A living body information sensor including a light receiving unit and generating information about a living body based on a signal from the light receiving unit,
the light receiving unit including a first optical sensor converting first light into a first signal, the first optical sensor including a first photoelectric conversion element converting the first light into the first signal, and a first color filter formed on an optical path leading to the first photoelectric conversion element, the first light passing through the first color filter, and the living body information sensor further comprising an infrared light elimination layer formed on the optical path leading to the first photoelectric conversion element.
Specification