Telecentric lens as a special optical lens, has a wide range of applications in the fields of machine vision, precision measurement and automated inspection.

Advantages of Telecentric Lens

Constant magnification: Within a certain object distance range, the magnification of the image obtained basically does not change regardless of the distance of the object from the lens. This feature is very critical for applications such as size measurement where the object being measured is not on the same object plane, and can effectively avoid measurement errors caused by changes in object distance.

Low Aberration: Telecentric lenses have a very low coefficient of aberration, which can usually be controlled at less than 0.1%, and even high-performance lenses can achieve no aberration. Low distortion means that the shape and size of the object can be more realistically reflected, for the shape and size of the high precision requirements of the detection and measurement tasks, such as precision mechanical parts, integrated circuit chip detection, telecentric lenses can provide more reliable image information.

Parallax-free: The magnification of telecentric lenses does not change with the distance and position of the object, eliminating the effects of parallax and making the imaging size relatively stable no matter where the object is. This is important in industrial automation applications that require precise measurement and positioning.

High Resolution: Telecentric lenses provide clear, sharp images with high image resolution that can distinguish the fine structure and features of objects. This is very helpful for detecting tiny defects, recognizing fine patterns, or performing high-precision measurement work.

Ultra-wide depth of field: The depth of field is large, and the imaging is basically unchanged when the object is moved within a certain object distance, i.e. the magnification is unchanged. This eliminates the need for frequent focus adjustments to ensure a clear image of the object during inspection or measurement, improving the adaptability and efficiency of inspection.

Unique parallel light design: The parallel light design of the telecentric lens makes the incident light parallel to the optical axis, which helps to reduce the scattering and refraction of light, and improves the quality and contrast of imaging. In some application scenarios that require high light conditions, the telecentric lens can work better with the lighting system to obtain clearer and more uniform images.

Application Prospects

Machine Vision: As the degree of industrial automation increases, the demand for machine vision systems is growing. As an important part of machine vision system, telecentric lens with its high precision and low distortion characteristics makes it has significant advantages in image recognition, size measurement and positional positioning.

Precision Measurement: In the field of precision measurement, the high resolution and low distortion characteristics of telecentric lenses make them ideal for detecting tiny defects, recognizing fine patterns and high-precision measurement. For example, in electronic component inspection, for the detection of tiny solder joints, lines and other details, high resolution telecentric lenses can accurately present and improve the accuracy and efficiency of inspection.

Automation Inspection: Telecentric lenses also play an important role in automation inspection. Its parallax-free, ultra-wide depth of field and constant magnification characteristics make it important in automated production line quality inspection and other scenes. For example, in robot vision and localization, telecentric lenses can improve the accuracy and reliability of the system.

Intelligent manufacturing: with the continuous development of intelligent manufacturing, the demand for high precision and high stability telecentric lenses is growing. The application of telecentric lenses in the field of intelligent manufacturing will become more and more extensive, providing strong support for the development of intelligent manufacturing.