What is a line-scan lens?

A line-scan lens is a lens designed to continuously photograph the surface of an object under test from one direction, usually in conjunction with a line array sensor. It continuously scans the object under test by constantly moving or panning to acquire an image of the entire object. Line-scan lenses are widely used in high-precision inspection, large-format scanning, and other fields.

Machine vision hardware required for line scan lens solutions

1、Line scanning lens: according to the inspection needs and object size, choose the appropriate line scanning lens, such as Moritex ML-120 series and so on. These lenses are usually characterized by high precision, high resolution and low distortion, which can meet the inspection requirements in different fields.

2、Line Array Camera: The line array camera used in conjunction with the line scanning lens is characterized by high sensitivity, high resolution and fast scanning speed. It can capture the tiny details of the object surface, improve the accuracy and reliability of detection.

3、Light source: In order to obtain a clear image, it is necessary to choose a suitable light source for illumination. Commonly used light sources include LED light sources, fiber optic lighting systems, etc.. These light sources can provide stable, uniform light to ensure image quality.

4、Motion control device: In order to realize the continuous scanning of the line scanning lens, you need to be equipped with motion control devices, such as motors, rails, etc.. These devices can accurately control the movement speed and position of the lens to ensure the accuracy and stability of scanning.

Machine vision software required for line scan lens solutions

1. Image processing software: Used to perform operations such as pre-processing, enhancement and segmentation on the acquired images to improve image quality and detection accuracy.

2. Machine vision tool software: provides a series of tools and algorithms for realizing functions such as recognition, localization, measurement and detection of objects. These software usually have friendly user interface and powerful functions to meet the inspection needs in different fields.

3. Motion control software: Used to control the operation of motion control devices to achieve continuous scanning and positioning of the lens. These software usually have precise control algorithms and real-time feedback functions, which can ensure the accuracy and stability of scanning.

Line Scan Lens Solution Application Examples

Taking semiconductor silicon wafer inspection as an example, POMEAS LL series line scan lenses can be used with 16K5μ line scan cameras and machine vision light sources for high-precision inspection. The solution can achieve up to μm accuracy, a field of view of 23mm, peripheral brightness uniformity of up to 99%, and imaging full-format consistency is significantly higher than existing lenses in the same class. In addition, the solution has the advantages of low distortion, high luminous flux, and a design close to the diffraction limit, which can meet the high-precision requirements of semiconductor silicon wafer inspection.