Machine vision LED light source type and technology introduction

A typical machine vision system includes: light source, lens, camera, image processing software, etc. The visual light source is an indispensable part of the machine vision system, and its choice directly affects the quality of the input data and the application effect. The following is a brief introduction to the types and related applications of machine vision light sources for dimensional vision images.

1. Ring LED vision light source: The ring light source is a high-brightness LED light source designed for machine vision, industrial inspection, and industrial stereo microscopes. The brightness is adjustable, low temperature, balanced, no flicker, no shadow, and the unique embedded structure. Users can install polarizers as needed to reduce light interference and significantly improve image quality. They are widely used in industrial microscopy, circuit board lighting, wafer and workpiece detection, and visual positioning systems.

Second, machine vision LED backlight: LED backlight is composed of high-brightness, long-life LED luminous tubes, which can fully highlight the contour information of the measured or detected object. The main applications are: contour detection, external detection of electronic components, and detection of transparent film Stain, SOP and CSP inspection, liquid crystal text inspection, small electronic components and QFP, SOP size and shape, bearing appearance and size inspection, semiconductor lead frame appearance and size inspection, etc.

Three, machine vision LED strip light source: the strip light source is suitable for the surface illumination of larger detected objects, can provide oblique illumination of the object from any angle, has a high brightness distribution in the strip structure, and is widely used in metal surface inspection , Surface crack inspection, film and paper packaging damage detection, pin flatness, LCD damage detection, positioning mark detection, LED defect inspection, etc.

Fourth, machine vision LED square oblique light source: the square light source is equipped with strip light on four sides, each side can independently control the lighting and angle, adapt to different height applications, and achieve high-precision lighting. It is mainly used for LCD panel label inspection, ceramic package exterior and crack inspection, QFC, SOP inspection, metal plate surface inspection, etc.

Fifth, machine vision diffuse reflection dome light source: the light emitted by the shadowless light source LED is reflected multiple times by the diffuse reflection plate on the inner wall of the hemispherical shape, which realizes the diffuse light illumination of the entire space area, and plays a special role for uneven surface detection Completely eliminate shadows, mainly used for defect detection of spherical or curved objects, surface detection of shiny objects such as metal, mirror or glass.

Six, machine vision coaxial light source: the coaxial light source provides alignment and surface inspection lighting for highly reflective surfaces, such as scratch inspection of metal surfaces, films, wafers, film and glass, chip and silicon wafer damage detection , Surface damage of glass plate, PC motherboard pattern inspection, printing plate graphic inspection, etc.

Seven, machine vision LED fiber optic cold light source: machine vision highlight LED fiber optic cold light source uses high-power LED, has good fiber coupling efficiency, industrial semiconductor and integrated circuit board detection light source, observation analysis lighting, visual lighting, temperature requirements Special occasions.

The dimensional image LED visual light source has the advantages of adjustable brightness, low temperature, balance, no flicker and no shadow, consistent brightness and color temperature, and long service life.