Methods and devices for detecting intensity of light with translucent detector
First Claim
1. An optical measurement device comprising:
- a light source configured to emit light to a measurement site;
a first detector positioned within an optical path between the light source and the measurement site, wherein at least a portion of the light emitted by the light source passes through the first detector prior to reaching the measurement site; and
a second detector configured to receive the at least a portion of the light after attenuation by the measurement site.
2 Assignments
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Accused Products
Abstract
An optical measurement device includes a light source, a first detector, and a second detector. The light source emits light to a measurement site of a patient and one or more detectors detect the light from the light source. At least a portion of a detector is translucent and the light passes through the translucent portion prior to reaching the measurement site. A detector receives the light after attenuation and/or reflection or refraction by the measurement site. A processor determines a light intensity of the light source, a light intensity through a tissue site, or a light intensity of reflected or refracted light based on light detected by the one or more detectors. The processor can estimate a concentration of an analyte at the measurement site or an absorption or reflection at the measurement site.
953 Citations
20 Claims
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1. An optical measurement device comprising:
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a light source configured to emit light to a measurement site; a first detector positioned within an optical path between the light source and the measurement site, wherein at least a portion of the light emitted by the light source passes through the first detector prior to reaching the measurement site; and a second detector configured to receive the at least a portion of the light after attenuation by the measurement site. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of determining one or more physiological parameters, the method comprising:
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controlling a light source to emit light towards a measurement site, wherein at least a portion of the light passes through a first detector before reaching the measurement site, and wherein the at least a portion of the light is received by a second detector after attenuation by the measurement site; receiving a first signal output by the first detector responsive to first light sensed by the first detector; receiving a second signal output by the second detector responsive to second light sensed by the second detector; and determining one or more physiological parameters based at least in part on the first signal and the second signal. - View Dependent Claims (12, 13)
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14. An optical measurement device comprising:
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a light source configured to emit light toward a measurement site; and a detector positioned within an optical path between the light source and the measurement site, wherein the detector is configured to sense a first portion of the light before the first portion of the light reaches the measurement site, and wherein a second portion of the light passes through the detector before the second portion of the light reaches the measurement site. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification