Fingerprint identifying system using a set of microstructure layers formed on one of top and bottom faces of light-transmissive finger press plate
First Claim
Patent Images
1. A fingerprint identifying system comprising:
- a light source;
a light-transmissive finger press plate disposed to receive light from said light source, and having a top face adapted to contact a finger, a bottom face, and at least one first microstructure layer formed on at least one of said top and bottom faces of said light-transmissive finger press plate for guiding the light received from said light source to uniformly scatter;
an image-capturing unit disposed below said light-transmissive finger press plate; and
a light-diffusing member disposed below said light-transmissive finger press plate and above said image-capturing unit, and having a through hole to permit said image-capturing unit to receive light reflected from the finger, said light source being disposed below said light-diffusing member, said light-diffusing member having a second microstructure layer.
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Abstract
A fingerprint identifying system includes a light source, a light-transmissive finger press plate, and an image-capturing unit. The light-transmissive finger press plate is disposed to receive light from the light source, and has a top face adapted to contact a finger, a bottom face, and at least one first microstructure layer formed on at least one of the top and bottom faces of the light-transmissive finger press plate for guiding the light received from the light source to uniformly scatter. The image-capturing unit is disposed below the light-transmissive finger press plate.
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Citations
11 Claims
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1. A fingerprint identifying system comprising:
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a light source; a light-transmissive finger press plate disposed to receive light from said light source, and having a top face adapted to contact a finger, a bottom face, and at least one first microstructure layer formed on at least one of said top and bottom faces of said light-transmissive finger press plate for guiding the light received from said light source to uniformly scatter; an image-capturing unit disposed below said light-transmissive finger press plate; and a light-diffusing member disposed below said light-transmissive finger press plate and above said image-capturing unit, and having a through hole to permit said image-capturing unit to receive light reflected from the finger, said light source being disposed below said light-diffusing member, said light-diffusing member having a second microstructure layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification