Fingerprint image sensing method

The invention discloses a fingerprint image sensing method which comprises the following steps: enabling at least one-dimensional collimated sensing light generated by a collimated light source to enter a light guide plate, and amplifying the sensing light to a certain proportion according to a fing...

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Bibliographic Details
Main Authors LIN ZHEXUAN, YE JUNHONG, XIAO JIAYUAN
Format Patent
LanguageChinese
English
Published 12.07.2019
Subjects
CALCULATING
COMPUTING
COUNTING
HANDLING RECORD CARRIERS
PHYSICS
PRESENTATION OF DATA
RECOGNITION OF DATA
RECORD CARRIERS
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Summary:The invention discloses a fingerprint image sensing method which comprises the following steps: enabling at least one-dimensional collimated sensing light generated by a collimated light source to enter a light guide plate, and amplifying the sensing light to a certain proportion according to a fingerprint sensing range so as to sense a fingerprint to generate a collimated fingerprint signal; after the fingerprint signal is shrunk in the light guide plate according to the proportion, separating the shrunk fingerprint signal without phase inversion from the bottom surface of the light guide plate, and then fingerprint identification can be carried out by restoring the fingerprint signal to obtain a fingerprint image. By means of the method, the purpose of fingerprint identification can be effectively achieved. 本发明公开了一种指纹图像传感方法，其利用准直光源产生的至少一维准直的感应光线进入导光板，再根据一指纹传感范围将感应光线放大至一比例，以传感指纹产生准直的指纹信号；在导光板内根据该比例缩小指纹信号后，再将缩小且没有反相的指纹信号由导光板底面离开，然后再经由还原指纹信号，即可进行指纹辨识，以取得指纹图像。本发明藉由上述的手段，可以有效实现指纹辨识的目的。
Bibliography:Application Number: CN201910127967