Miniature anti-shake iris recognition module set and terminal device

Abstract

The invention provides a miniature anti-shake iris recognition module set. The miniature anti-shake iris recognition module set comprises a camera module set body, a detection device and an anti-shake mechanism. When the module set shakes when being operated, the detection device on the camera module set body detects the displacement difference of the position of the optical axis of a lens inside a lens barrel on a photosensitive chip and the center position of the photosensitive chip; the displacement difference is converted into electrical signals, and the electrical signals are transmitted to a driving chip; the driving chip calculates displacement quantity to be compensated and controls current quantity on the coil of the lens barrel; and a magnetic attractive force or repulsive force is generated between a generated electromagnetic force and a magnetic substance, so that the relative displacement quantity of the lens barrel between the optical axis and the center position of the photosensitive chip can be compensated. According to the miniature anti-shake iris recognition module set provided by the invention, the miniature anti-shake mechanism is adopted, problems such as the problem of incapability of quickly recognizing iris images which is caused by the providing of external support and the tremble of the hands of people can be avoided, the one-time recognition success rate of a hand held iris terminal device can be improved, and an iris recognition process can be completed stably with one step.

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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