Invention Grant
US09251397B2 Fingerprint image capturing device and fingerprint image capturing module thereof 有权
指纹图像捕获装置及其指纹图像捕获模块

Fingerprint image capturing device and fingerprint image capturing module thereof
Abstract:
A fingerprint image capturing module includes a light-emitting element, a light-splitting element, a first light-reflecting element, a second light-reflecting element, a lens assembly and a fingerprint image sensing element, characterized in that: a projection light beam generated by the light-emitting element is reflected by the light-splitting element and the first light-reflecting element in sequence to form an illumination light beam that passes through a light-transmitting element and is projected onto a fingerprint of a finger, the illumination light beam is reflected by the finger to form an image light beam that is reflected by the first light-reflecting element, the image light beam sequentially passes through the light-splitting element and the lens assembly and is projected onto the fingerprint image sensing element through the second light-reflecting element, and the fingerprint image sensing element receives the image light beam to obtain a fingerprint image of the fingerprint of the finger.
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