OPTICAL PULSE-RATE SENSING
First Claim
Patent Images
1. An optical pulse-rate sensor comprising:
- a fixture with a rim configured to contact a skin surface and enclose an area of the surface;
a light emitter coupled to the fixture and positioned opposite the area;
a light sensor coupled to the fixture and positioned opposite the area;
a lens positioned over the light sensor; and
a light stop coupled to the fixture and positioned between the light emitter and the light sensor to shield the light sensor and lens from direct illumination by the light source.
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Abstract
An optical pulse-rate sensor includes a fixture, a light emitter, a light sensor, and a light stop. The fixture has a rim configured to contact a skin surface and enclose an area of the surface. The light emitter and light sensor are each coupled to the fixture and positioned opposite the area. The light stop is coupled to the fixture and positioned between the light emitter and the light sensor to shield the light sensor from direct illumination by the light source.
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Citations
20 Claims
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1. An optical pulse-rate sensor comprising:
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a fixture with a rim configured to contact a skin surface and enclose an area of the surface; a light emitter coupled to the fixture and positioned opposite the area; a light sensor coupled to the fixture and positioned opposite the area; a lens positioned over the light sensor; and a light stop coupled to the fixture and positioned between the light emitter and the light sensor to shield the light sensor and lens from direct illumination by the light source. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A wearable electronic device comprising:
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a fixture with a rim configured to contact a skin surface and enclose an area of the surface; a light emitter coupled to the fixture and positioned opposite the area; a light sensor coupled to the fixture and positioned opposite the area; an interference filter positioned over the light sensor to limit a wavelength range of light received into the light sensor; electronics configured to drive the light emitter, receive output from the light sensor, and based on the output, to generate data responsive to a pulse rate of blood flowing under the skin surface; and a band connected to the fixture and configured to press the rim against the skin surface when the wearable electronic device is worn. - View Dependent Claims (15, 16)
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17. An optical pulse-rate sensor comprising:
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a fixture with a rim configured to contact a skin surface and enclose an area of the surface; a light emitter coupled to the fixture and positioned opposite the area; a light sensor coupled to the fixture and positioned opposite the area; a light stop coupled to the fixture and positioned between the light emitter and the light sensor to shield the light sensor from direct illumination by the light emitter; and a light guide configured to collect light from the light emitter and redirect the light towards the surface. - View Dependent Claims (18, 19, 20)
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Specification