System and method for determining vital sign information of a subject
First Claim
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1. A system for determining vital sign information of a subject comprising:
- a camera including a lens and an image sensor;
a marker including a first marker area configured to transmit light at a first wavelength and a second marker area configured to transmit light at a second wavelength, the first marker area comprising a first optical filter plate and the second marker area comprising a second optical filter plate, the first and second filter plates being non-rotatably attached to the carrier element;
a carrier element, the marker being stationarily mounted to the carrier element, the carrier element being stationarily mounted to the camera such that light transmitted through the first marker area hits a first portion of the image sensor and light transmitted through the second marker area hits a second portion of the image sensor;
wherein the image sensor generates at least a first color signal resulting from the first portion of the image sensor and a second color signal resulting from the second portion of the image sensor, anda processor configured to determine the vital sign information of the subject from the first and second color signals.
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Accused Products
Abstract
A remote photoplethysmography system includes a filter (10) for application to a detection unit. The filter further includes a first filter area (11) configured to transmit light (A) at a first wavelength and a second filter area (12) configured to transmit light (D) at a second wavelength. The detection unit (22) detects radiation received from the first filter area and from the second filter area of the filter. An analysis unit (6) determines the vital sign information of the subject from the detected radiation from the first filter area and from the second filter area.
4 Citations
15 Claims
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1. A system for determining vital sign information of a subject comprising:
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a camera including a lens and an image sensor; a marker including a first marker area configured to transmit light at a first wavelength and a second marker area configured to transmit light at a second wavelength, the first marker area comprising a first optical filter plate and the second marker area comprising a second optical filter plate, the first and second filter plates being non-rotatably attached to the carrier element; a carrier element, the marker being stationarily mounted to the carrier element, the carrier element being stationarily mounted to the camera such that light transmitted through the first marker area hits a first portion of the image sensor and light transmitted through the second marker area hits a second portion of the image sensor; wherein the image sensor generates at least a first color signal resulting from the first portion of the image sensor and a second color signal resulting from the second portion of the image sensor, and a processor configured to determine the vital sign information of the subject from the first and second color signals. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A system configured for determining vital sign information with a mobile phone including a camera having a lens configured to focus light received through the lens on an array of detector pixels and a processor configured to process data, the system comprising:
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a first optical filter plate configured to pass light of a first wavelength and block light of other wavelengths; a second optical filter plate configured to pass light of a second wavelength and block light of other wavelengths; a carrier, the first and second optical filter plates being stationarily mounted in the carrier, the carrier being configured for attachment to the mobile phone adjacent the lens such that light of the first color passing through the first filter is received by a first group of the array of detector pixels and light of the second color is received by a second group of the array of detector pixels, the second group being displaced from the first group; and software configured to program the processor to determine the vital sign information from data received from the first and second groups of detector pixels. - View Dependent Claims (9, 10, 11, 12, 13)
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14. A method for determining vital sign information of a subject comprising the steps of
passing light from a patient through a first marker area marker area, configured to transmit light at a first wavelength, and through a second marker area, configured to transmit light at a second wavelength; -
with a camera included in a mobile phone in which the camera comprises a lens and an image sensor, focusing the light transmitted through the first marker area on a first portion of the image sensor and the light transmitted through the second marker area on a second portion of the image sensor, the first and second portions of the sensor being different and separated from each other; generating a first signal with the first portion of the image sensor and a second signal from the second portion of the image sensor, determining the vital sign information of the subject from the first and second signals, wherein the first and second marker areas and the lens and the image sensor remain in a fixed, non-rotating relationship relative to each other during the transmitting of light through the first and second marker areas. - View Dependent Claims (15)
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Specification