When to Use Telecentric Lens Machine Vision

In the field of machine vision, selecting the appropriate lens is crucial, especially for dual telecentric lens machine vision. In certain applications, dual telecentric lenses can provide higher imaging accuracy and consistency, thereby improving inspection efficiency.

Characteristics of Telecentric Lens Machine Vision

Conventional FA lenses often exhibit the characteristic of appearing larger when closer and smaller when farther away, which greatly affects inspection accuracy. However, dual telecentric lens machine vision corrects this parallax issue through special optical design. Dual telecentric lenses ensure that light rays remain parallel to the optical axis when entering and exiting the optical system, maintaining a constant imaging magnification for the surface of the captured object. Using dual telecentric lenses not only resolves precision inspection issues caused by parallax but also eliminates stray light effects, enhancing the sharpness of the object's edges, ensuring clear imaging contours, and greatly benefiting subsequent image processing.

Considerations for the Application of Telecentric Lens Machine Vision

In many scenarios involving precise measurement and defect detection, dual telecentric lens machine vision demonstrates its unique advantages. When selecting dual telecentric lenses, we need to consider the following key factors: Firstly, when the object to be inspected has a large thickness and requires inspection on multiple planes, such as food boxes and beverage bottles, dual telecentric lenses can ensure imaging consistency across different planes. Secondly, if the object's placement is unstable and might be at an angle to the lens, dual telecentric lenses can effectively reduce the impact of angle variations. Additionally, when the object being inspected experiences vertical oscillations during the inspection process, such as vibrations on a production line, dual telecentric lens machine vision can still maintain stable measurement accuracy.

In dealing with special objects, such as those with apertures or three-dimensional structures, the advantages of dual telecentric lenses are more evident. Furthermore, if low distortion and uniform brightness are required for image quality, dual telecentric lenses are undoubtedly the best choice. Finally, when defect detection relies on specific directional parallel lighting, dual telecentric lens machine vision can also ensure high inspection accuracy.

During the use of dual telecentric lens machine vision , it is particularly important to consider the impact of object distance changes on measurement results. Variations in object distance can lead to changes in image height, causing measurement errors. Even with fixed object distance, precise adjustment of the CCD sensor surface can be challenging, leading to potential errors. Employing dual telecentric lenses can effectively eliminate measurement errors caused by object distance variations, ensuring the accuracy of inspection results. In summary, dual telecentric lens machine vision demonstrates its irreplaceable value in various application scenarios, especially when high-precision measurement and defect detection are required. Choosing dual telecentric lenses will be the ultimate solution for enhancing inspection efficiency and accuracy.