Personal identification device
First Claim
Patent Images
1. A personal identification device comprising:
- an infrared light source;
a transmission light quantity control element array provided by a plurality of light transmission control elements for exercising control to transmit or block light radiated from said infrared light source to a living body; and
a light receiving element array provided by a plurality of light receiving elements for receiving light radiated from the living body;
wherein said infrared light source, said transmission light quantity control element array, and said light receiving element array are positioned on the same side of the living body; and
control identification means for identifying a person in accordance with a combined image that is obtained by combining a first image with a second image,wherein said first image is obtained when said light receiving element array acquires light containing internal biometric feature information that is derived from the living body when said transmission light quantity control element array is controlled to radiate one region of the living body with light transmitted from said infrared light source; and
wherein said second image is obtained when said light receiving element array acquires light containing internal biometric feature information that is derived from the living body when said transmission light quantity control element array is controlled to radiate another region of the living body with light transmitted from said infrared light source.
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Abstract
A thin personal identification device that in which the infrared light source, transmission light quantity control element array, and light receiving element array are positioned on the same side of a living body. A microcomputer controls the array to combine a first image, which is obtained from the living body when one region of the living body is radiated with light transmitted from the infrared light source, with a second image, which is obtained when another region of the living body is radiated, and identifies a person in accordance with the combined image.
23 Citations
8 Claims
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1. A personal identification device comprising:
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an infrared light source; a transmission light quantity control element array provided by a plurality of light transmission control elements for exercising control to transmit or block light radiated from said infrared light source to a living body; and a light receiving element array provided by a plurality of light receiving elements for receiving light radiated from the living body; wherein said infrared light source, said transmission light quantity control element array, and said light receiving element array are positioned on the same side of the living body; and control identification means for identifying a person in accordance with a combined image that is obtained by combining a first image with a second image, wherein said first image is obtained when said light receiving element array acquires light containing internal biometric feature information that is derived from the living body when said transmission light quantity control element array is controlled to radiate one region of the living body with light transmitted from said infrared light source; and wherein said second image is obtained when said light receiving element array acquires light containing internal biometric feature information that is derived from the living body when said transmission light quantity control element array is controlled to radiate another region of the living body with light transmitted from said infrared light source. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification