Dynamically reconfigurable apertures for optimization of PPG signal and ambient light mitigation
First Claim
1. An electronic device for measuring physiological information, the device comprising:
- one or more light emitters configured to emit light;
one or more light sensors configured to detect a reflection of the emitted light and generate one or more signals indicative of the detected reflected light;
a device component capable of forming dynamically reconfigurable apertures having a configuration to allow light to be transmitted from at least one of the one or more light emitters to at least one of the one or more light sensors, each aperture including a center location; and
a processor configured to;
dynamically adjust a separation distance between the center locations of at least two of the apertures; and
determine the physiological information based on the one or more signals.
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Accused Products
Abstract
This relates to an electronic device with dynamically reconfigurable apertures to account for different skin types, usage conditions, and environmental conditions and methods for measuring the user'"'"'s physiological signals. The device can include one or more light emitters, one or more light sensors, and a material whose optical properties can be changed in one or more locations to adjust the optical path and the effective separation distances between the one or more light emitters and one or more light sensors or the size, location, or shape of the one or more dynamically reconfigurable apertures. In some examples, the material can be a liquid crystal material, MEMS shutter layer, or light guide, which can form the one or more dynamically reconfigurable apertures. In some examples, the light emitters or light sensors or both can be an array of individually addressable optical components.
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Citations
29 Claims
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1. An electronic device for measuring physiological information, the device comprising:
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one or more light emitters configured to emit light; one or more light sensors configured to detect a reflection of the emitted light and generate one or more signals indicative of the detected reflected light; a device component capable of forming dynamically reconfigurable apertures having a configuration to allow light to be transmitted from at least one of the one or more light emitters to at least one of the one or more light sensors, each aperture including a center location; and a processor configured to; dynamically adjust a separation distance between the center locations of at least two of the apertures; and determine the physiological information based on the one or more signals. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. An electronic device for measuring physiological information, the device comprising:
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one or more light emitters configured to emit light; one or more light sensors configured to detect a reflection of the emitted light and generate one or more signals indicative of the detected reflected light; and a device component capable of forming dynamically reconfigurable apertures having a configuration to allow light to be transmitted from at least one of the one or more light emitters to at least one of the one or more light sensors, a processor configured to; determine the physiological information based on the one or more signals; wherein; during a first configuration; the one or more light emitters are configured to emit a first light, the one or more light sensors are configured to receive a second light, the second light being a reflection of the first light, and the apertures, each having a center location, are configured to; allow the first light to be transmitted from the one or more light emitters, and allow the second light to be received at the one or more light sensors; and during a second configuration; the one or more light emitters are configured to emit a third light, the one or more light sensors are configured to receive a fourth light, the fourth light being a reflection of the third light, the apertures are configured to; allow the third light to be transmitted from the one or more light emitters, and allow the fourth light to be received at the one or more light sensors; and wherein the processor is further configured to compare a signal from the second light to a signal from the fourth light and dynamically adjust a separation distance between the center locations of the apertures from the first configuration to the second configuration. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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Specification