Optical identification module

Abstract

The invention provides an optical identification module which comprises a sensor and a collimator. The sensor has a plurality of sensing regions. The collimator is arranged on the plurality of sensing areas, and the collimator comprises a light-transmitting substrate, a first light shielding layer and a plurality of micro lenses. The first light shielding layer includes a plurality of first openings. The plurality of micro lenses are arranged on a first surface of the light-transmitting substrate, and the plurality of micro lenses respectively correspond to the plurality of first openings.

Description

technical field [0001] The invention relates to an optical module, in particular to an optical identification module capable of identifying biometric features. Background technique [0002] With the vigorous development of Internet of Things technology, the application and demand of biometric technology is expanding rapidly. At present, the common biometric technologies on the market mainly use optical, capacitive or ultrasonic methods to identify biometric features such as fingerprints, palm prints, vein distribution, iris, retina or facial features, so as to achieve the purpose of identity recognition or authentication. Compared with the recognition module that recognizes biometric features by capacitance or ultrasonic waves, the optical recognition module that recognizes biometric features optically receives the light beam reflected by the object to be detected through the sensor to identify biometric features, so it has high durability and The advantage of low cost. Ho...

AI Technical Summary

Problems solved by technology

However, the light beam reflected by the object to be measured is easily transmitted to the sensor scatteredly, resulting in poor image quality and affecting the recognition result

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