A miniature anti-shake iris recognition module and terminal equipment

Abstract

A miniature anti-shake iris recognition module provided by the present invention includes a camera module body, a detection device and an anti-shake mechanism. When the operation module shakes, the detection device on the camera module body detects the displacement difference between the optical axis of the lens in the lens barrel on the photosensitive chip and the center position of the photosensitive chip, and the displacement difference is converted into an electrical signal and transmitted To the driver chip, the driver chip calculates the amount of displacement that needs to be compensated and controls the current of the coil on the lens barrel. The electromagnetic force generated and the magnetic material generate magnetic attraction or repulsion, driving the lens barrel to the center of the optical axis and the photosensitive chip Compensate for the relative displacement between them. The miniature anti-shake iris recognition module provided by the present invention, through its own miniature anti-shake mechanism, avoids the problems that the iris picture cannot be quickly recognized due to the need to provide an external bracket and the shaking of the human hand, thereby improving the success of one-time recognition of the handheld iris terminal device The rate is high, and the iris recognition process can be completed stably at one time.

Description

technical field [0001] The invention belongs to the technical field of camera modules, in particular to a miniature anti-shake iris recognition module and terminal equipment. Background technique [0002] In recent years, iris recognition systems have been increasingly used in the security verification of personal identities. Iris Recognition System Compared with fingerprint recognition system, iris recognition system is highly appreciated for its excellent recognition rate and high accuracy. The field of view of the lens used in conventional iris recognition camera modules is usually relatively small, and if the lens shakes slightly, the picture will be blurred. The conventional anti-shake method generally adopts an external auxiliary anti-shake camera bracket, or an ordinary auto-focus camera with a combination of a high-resolution image sensor and a voice coil motor. Since miniature iris recognition modules are usually used in handheld terminal devices, such as mobile p...

AI Technical Summary

Problems solved by technology

[0004] The invention provides a miniature anti-shake iris recognition module and terminal equipment. The module itself has a miniature anti-shake mechanism, which avoids shooting problems such as the need to provide an external bracket and the iris picture cannot be quickly identified due to human hand shake, and can be used once. Complete the iris recognition process

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