Hygienic biometric sensors
First Claim
Patent Images
1. A method of performing a biometric measurement on an individual, the method comprising:
- disposing a containment film between a skin site of the individual and a platen;
directing light through the containment film to the skin site to illuminate the skin site under a plurality of distinct optical conditions, wherein at least one of the distinct optical conditions includes illuminating the skin site at an angle less than a critical angle, wherein the critical angle is defined by the interface of the platen and the ambient environment and measured from the normal of the platen;
receiving light scattered from the skin site for the plurality of optical conditions, wherein at least a portion of the light is received after being scattered from the skin site at an angle less than the critical angle;
deriving a multispectral image of the skin site from the received light; and
performing a biometric function with the derived multispectral image.
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Accused Products
Abstract
Methods and systems for performing a biometric measurement on an individual are disclosed. A containment film is disposed between a skin site of the individual and a platen. Light is directed through the containment film to the skin site to illuminate the skin site under multiple distinct optical conditions. Light scattered from the skin site is received for the multiple optical conditions. A multispectral image of the skin site is derived from the received light. A biometric function is performed with the derived multispectral image.
402 Citations
24 Claims
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1. A method of performing a biometric measurement on an individual, the method comprising:
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disposing a containment film between a skin site of the individual and a platen; directing light through the containment film to the skin site to illuminate the skin site under a plurality of distinct optical conditions, wherein at least one of the distinct optical conditions includes illuminating the skin site at an angle less than a critical angle, wherein the critical angle is defined by the interface of the platen and the ambient environment and measured from the normal of the platen; receiving light scattered from the skin site for the plurality of optical conditions, wherein at least a portion of the light is received after being scattered from the skin site at an angle less than the critical angle; deriving a multispectral image of the skin site from the received light; and performing a biometric function with the derived multispectral image. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A biometric system comprising:
- a platen;
a thin film substantially transparent to the light disposed above the platen and configured to receive a biometric from an individual; one or more illumination sources configured to direct light through the platen and the thin film, wherein at least one of the one or more illumination sources directs light through the platen and the thin film at an angle less than a critical angle, wherein the critical angle is defined by the interface of the platen and the ambient environment and measured from the normal of the platen; a detector configured to receive light reflected from the biometric through the thin film and the platen, wherein at least a portion of the light is received after being scattered from the skin site at an angle less than the critical angle; and
further comprising a computational device configured to derive a multispectral image of the skin site from the received light; and
perform a biometric function with the derived multispectral image. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
- a platen;
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21. A biometric system comprising:
- a platen;
a thin film substantially transparent to the light disposed above the platen and configured to receive a biometric from an individual; an illumination source configured to direct light through the platen and the thin film at an angle less than a critical angle, wherein the critical angle is defined by the interface of the platen and the ambient environment and measured from the normal of the platen; a detector configured to receive light reflected from the biometric through the thin film and the platen at an angle less than a critical angle and further comprising a computational device configured to derive a multispectral image of a skin site from the received light; and
perform a biometric function with the derived multispectral image.
- a platen;
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22. A method of performing a biometric measurement on an individual, the method comprising:
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disposing a containment film between a skin site of the individual and a platen; directing light through the containment film to the skin site to illuminate the skin site under a plurality of distinct optical conditions, wherein at least one of the distinct optical conditions includes illuminating the skin site at an angle less than a critical angle, wherein the critical angle is defined by the interface of the platen and the ambient environment and measured from the normal of the platen; receiving light scattered from the skin site for the plurality of optical conditions, wherein at least a portion of the light is received after being scattered from the skin site at an angle less than the critical angle; deriving a multispectral image of the skin site from the received light; and determining the identity of the individual with the derived multispectral image.
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23. A biometric system comprising:
- a platen;
a thin film substantially transparent to the light disposed above the platen and configured to receive a biometric from an individual; one or more illumination sources configured to direct light through the platen and the thin film, wherein at least one of the one or more illumination sources directs light through the platen and the thin film at an angle less than a critical angle, wherein the critical angle is defined by the interface of the platen and the ambient environment and measured from the normal of the platen; a detector configured to receive light reflected from the biometric through the thin film and the platen, wherein at least a portion of the light is received after being scattered from the skin site at an angle less than the critical angle; and a computational unit configured to derive a multispectral image of a skin site from the received light and with instructions to perform a biometric function verifying an identity of the individual.
- a platen;
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24. A biometric system comprising:
- a platen;
a thin film substantially transparent to the light disposed above the platen and configured to receive a biometric from an individual; an illumination source configured to direct light through the platen and the thin film at an angle less than a critical angle, wherein the critical angle is defined by the interface of the platen and the ambient environment and measured from the normal of the platen; a detector configured to receive light reflected from the biometric through the thin film and the platen at an angle less than a critical angle; and
a computational unit configured to derive a multispectral image of a skin site from the received light and with instructions to perform a biometric function verifying an identity of the individual.
- a platen;
Specification