Key Functions And Parameters Of Iris Recognition Lenses

Iris recognition is a biometric recognition technology, and the iris recognition lens is an important component used in iris recognition technology. It is mainly used to collect iris images for individual identification and is a key component to ensure the accuracy of the iris recognition system.

1、The main functions of the iris recognition lens

We know that iris recognition lenses are mainly used in some financial, government, medical and other fields with security access control, and there are some special requirements for the functions of the lens. For iris recognition lenses, we need to focus on the following functions:

High-definition image acquisition

Iris recognition lenses usually use high-resolution imaging sensors that can capture the details and texture features of the human iris, thereby ensuring high-quality image acquisition.

Autofocus and autoexposure

Iris recognition lenses usually have auto-focus and auto-exposure functions, which can quickly and accurately adjust the focus and exposure parameters to ensure clear iris image capture.

Functions of the iris recognition lens

Using near infrared light

Iris recognition lenses usually use near-infrared light, which can effectively penetrate the cornea and reduce the pupil’s reaction to light, improving the accuracy and stability of recognition.

Impact resistant and water and dust resistant

Iris recognition lenses usually have impact-resistant, waterproof and dust-proof designs, which can maintain stable operation in harsh environments and improve the reliability and durability of the equipment.

Fast recognition speed

The iris recognition lens has a fast recognition speed and can complete the acquisition and matching of iris images within a few seconds, making it suitable for real-time identity authentication applications.

Improve security with data encryption

Iris recognition lenses usually use encryption technology during data transmission and storage to ensure the security of identification data and the protection of personal privacy.

2、The key parameters of iris recognition lens

Iris recognition lenses are usually installed on a dedicated iris recognition device. Different devices and application scenarios may have different parameter requirements. The following are some parameters that need to be focused on:

Резолюція

Retinal scanning requires a high-resolution lens to capture sufficient iris details, so the iris recognition lens has high requirements for resolution.

Aperture range

A lens’s aperture determines how much light can pass through the lens and reach the image sensor. Generally speaking, a larger aperture allows more light, but the image may have a pinhole blur.

Aperture is one of the important parameters

Focal length

Focal length is the distance from the lens to the imaging sensor. Focal length has a direct impact on the magnification and field of view of the image. Iris recognition systems usually use lenses with long focal lengths.

Sensor size

The sensor is mainly used to receive and process light from the lens. The size and quality of the sensor will affect the final imaging effect of the lens.

Working distance

Working distance refers to the distance between the lens and the target (iris of the eye). This distance needs to be adjusted according to the actual application environment.

Optical design

Optical design mainly includes lens type and reflective and anti-glare treatments, which will affect the imaging quality and overall performance of the lens.