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A machine vision lens is an optical device that captures an image for further automation and analysis of an industrial environment. Machine vision lenses, designed for challenging environments, offer high-resolution imaging, durability, and precision unlike standard cameras. These lenses are associated with a machine vision camera in identifying, inspecting, and measuring objects or surfaces in most industrial processes. 

A machine vision system would rely on the Machine Vision Lens to gather proper visual data. And enable software to make decisions in real time on items. That lack standards, have defects, or whose measurements require verification. As well as to guide the robotic arms. The quality of the lens in the machine vision system is the basis upon which images with details can be detected. And therefore directly implies an influence on the overall efficiency of the application.

Types of Machine Vision Lenses

There are various kinds of machine vision lenses. These primarily differ based on their functions and imaging requirements in various applications. A few general types include standard fixed lenses, zoom lenses, and telecentric lenses. In an industrial process, each one has different advantages based on the specific requirements.

Fixed lenses: They have a specific single focal length. They can be used for simple applications where only one viewing angle is needed.

Zoom lenses: They support varying focal lengths. Therefore, zooms are very applicable in cases in which different viewing angles or magnification levels are mandatory.

Telecentric lenses: These lenses are special in that the perspective distortion will not be there. 

What are Machine Vision Telecentric Lenses?

Machine vision Telecentric Lens is an indispensable part of any precision-based industry. Where the smallest deviation in measurement can lead to errors. Unlike standard lenses, which suffer from perspective distortion (objects appear larger when closer to the camera), telecentric lenses produce images with identical magnification across the entire field of view. This feature of telecentric lenses is special, and it makes greater application in measurement and inspection.
For example, when manufacturing electronic components, a little distortion in the size measured leads to defects in the final product. This risk is removed through telecentric lenses.

Benefits of Machine Vision Telecentric Lenses

Perspective distortion eliminating

The old lenses distort the objects' shapes if they are near or far from the camera. Telecentric lenses avoid this problem by providing even magnification. To ensure that the object appears at its actual size irrespective of their distance from the camera.

Improved measurement accuracy

Telecentric lenses give highly accurate object measurement. These are ideal for applications with high demands for accuracy and precision. 

High Depth of Field

Telecentric lenses provide a wide depth of field. That is, objects at other distances from the lens appear sharp. It is therefore useful in inspection. Especially when it comes to things that are not properly aligned.

Uniform Image Illumination

The telecentric lenses ensure uniform illumination of the entire image. This is important in a wide range of applications where the analysis of images requires accuracy.

Machine vision technology is the core requirement in modern industrial automation. And here it is the machine vision lens that bears the vital responsibility. Of all types of lenses, the Machine Vision Telecentric Lens stands alone. For it does not include perspective distortion and any discrepancy in measurements besides delivering uniform illumination.