Brief explanation of bi-telecentric lens

Telecentric lenses, a branch of industrial lenses, are increasingly used in various machine vision projects, providing unique advantages. These advantages often allow unique solutions to many complex and challenging project issues. However, telecentric lenses are not as widely used as typical industrial lenses, resulting in many engineers not utilizing them effectively in solution design, leading to less efficient, costlier project solutions. Let's explore real-world applications to understand when and why to use telecentric lenses.

Simplifying Workstation Configuration and Reducing Costs

In visual inspection projects, high detection demands or specific shapes of inspected workpieces often require multiple workstations in traditional approaches. This is especially true for workpieces with significant thickness (height differences) or complex curved structures.

Telecentric lenses can help avoid multi-workstation setups, simplifying coordination between workstations, reducing hardware costs, and cutting unnecessary software development.

Handling Complex Workpieces

Workpieces with varying thicknesses, flanges, gear plates, and structures with height differences are common in industrial settings. Features like internal grooves, stepped outer diameters, or threaded sections complicate inspection, especially since they don't lie on the same detection plane. General lenses struggle with shallow depth of field and strong reflections from metal surfaces, making comprehensive inspection difficult.

Telecentric lenses can effectively address these issues in a single setup due to their dual telecentricity. This feature allows for uniform magnification across varying distances, providing high precision in detecting intricate features like threads, flanges, and multiple-thickness holes.

Comparing Results with and without Telecentric Lenses

The following examples illustrate the benefits of telecentric lenses:

• Spring Workpieces: The results from ordinary lenses can suffer from depth of field issues, leading to blurred areas and inconsistent magnification. Telecentric lenses provide clear, consistent images with accurate dimensions.

• Gears: Ordinary lenses might not capture the complete structure due to limited depth of field, resulting in incomplete or distorted images. Telecentric lenses offer a more comprehensive view, enabling accurate inspection of all features.

As more workpiece inspection projects leverage telecentric technology, they achieve reduced workstation requirements, optimized software, improved detection efficiency, and cost savings. This trend aims to deliver more value to users through ongoing innovation and application of telecentric lens technology.