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Suppliers might provide these kinds of telecentric lens systems to buyers for different jobs.
This telecentric lens system is generally meant for measuring and inspecting, particularly when focusing on items with circular shapes. This kind of lens maintains a column status of light, which means that as one moves away from the centre of the field of view, the magnification remains the same. This feature ensures that round shapes are captured without distortion. To achieve this, an object telecentric lens system is used in many machine vision applications, including quality control in manufacturing.
This type of lens can be classified as a telecentric lens that provides a wide field of view. This wide-angle lens maintains its telecentric properties across a larger area. Its design usually features a combination of wide-angle and telecentric lens elements. A viewport lens is ideal for capturing large objects or scenes while ensuring that the perspective distortion remains minimal even at the periphery of the view.
Similar to the circular lens system, a ring lens system is also meant for inspecting or measuring objects with a snapshot shape. It delivers the same telecentric benefits as described prior. However, being a ring-type design, it allows for the placement of illumination sources in the centre for better viewing without casting shadows.
According to its classification, a front lens system is a type of telecentric lens that can be fixed to the front of a camera. Front lens systems offer the flexibility and advantages of telecentricity in compact setups. Such lens systems are commonly found in portable or space-constrained applications where integrating telecentricity is beneficial for industrial camera systems.
Selecting a telecentric lens requires carefully considering the following factors.
This refers to the distance from the lens to the object being viewed. Since telecentric lenses are applied for technical telecentricity, the working distance must be appropriate for the set of tasks required. For instance, in-depth studies or inspections require a longer working distance than regular studies.
Different applications require different types of telecentric lens. For example, manufacturing inspection demands precision, and one should use an object lens for such purposes. In contrast, when performing lens analysis, one should use a system lens that keeps the perspective distortion minimal.
The field of view defines the observable area through the lens. A highly comparable lens typically provides a much smaller field of view than a machine vision lens; thus, it is suitable for accuracy and detail studies. However, when comparing bigger components or using them in position recognition, a lens with a larger field of view is necessary.
Maintaining certain factors constant throughout the inspection is important, including magnification, angle of view and lens aberration. Choosing a lens with compatible magnification properties is critical if one wants to keep these parameters constant. High magnification lenses are usually applicable for finer studies, while low magnification ones are suitable for larger components.
Using lenses aligned well is crucial in gaining good telecentricity. In most cases, manufacturers provide alignment tools that help position the lens concerning the camera and object accurately. For proper precision, its suggested alignment accuracy is within a few microns.
Telecentric lenses are applied in many industrial settings.
Since semiconductor devices are very small, their components must be accurately measured with high precision. Telecentric lenses are applied here because of their ability to remove all perspective distortions and provide accurate measurements. They are very useful when measuring and checking critical features on semiconductor wafers and circuits. Also, telecentric lenses can be used to provide smooth, clear images for inspection or lithography tasks. This makes them important in manufacturing, as they help make sure that the products are made correctly.
Telecentric lenses play an important role in industrial 3D metrology and inspection. Their unique design eliminates perspective distortion, ensuring that measurements remain accurate, regardless of the object's position. This is particularly useful in inspecting components with complex geometries, as it maintains consistent magnification across different surface angles. By providing precise measurement of length, width, and height, telecentric lenses help monitor quality control. Their ability to capture detailed, dimensionally accurate images allows for the detection of minute defects or deviations from design specifications, ensuring that only the best products reach consumers.
Telecentric lenses are commonly used for machine vision systems that help automate tasks in production lines. This is because they eliminate perspective distortion and make it easier for the systems to know how big objects are, which helps in such jobs as checking quality, guiding robots, and sorting things out. These lenses are particularly useful for handling objects with different shapes or surfaces since they let you measure more accurately and have fewer mistakes because of the shape of the object. Also, the telecentric lenses help speed up production by giving fast, correct results that help systems act quickly and accurately in fast manufacturing environments.
In manufacturing, telecentric lenses help with optical inspection by allowing for accurate measurements of product features. Because they are designed the same way and keep one focal length from every point on the object surface, they produce consistent magnification regardless of the object's angle or distance. This makes it easier to check technical features such as sizes, shapes, and positions while avoiding errors from perspective effects. Tele-centric lenses simplify and improve the process of detecting defects and verifying specifications in such industries as automotive, electronics, and machinery manufacturing.
It's important to understand these telecentric lens specifications when considering buying.
The optical system specification of a telecentric lens involves key details concerning the lens's functioning. This includes telecentric lens elements, which comprise of apertures, focal length, and principal planes, among others. Many have state-of-the-art coatings that lessen flare and increase brightness, especially in poorly lit situations. Great care is taken in designing the optical systems to prevent chromatic, geometrical and other forms of aberration. This ensures that the final images are sharp and clean right throughout the field of view.
The telecentric lens is mounted with well-designed mechanical systems, which ensure there is a maintained stability and alignment, no matter what the environment conditions are. The barrels are made from sturdy materials such as aluminium, and the internal parts are professinally engineered for durability. If needed, there are also articulated focus, iris and zoom rings. Most of the telecentric lenses come in such standard mounting configurations for easy integration into various cameras and imaging systems. Alignment stays right, even with large shift or tilt, to make inspection accurate.
Performance lenses are compared based on resolution, image contrast, light gathering ability and distortion. High-resolution lenses can resolve fine details, while contrast measures the difference in shades or colours. Lenses with better light-gathering capacity work well in low-light conditions. However, only expert-professional applied telecentric lenses come with performance specifications for other non-technical users.
The telecentric lens resolution specification concerns detail capturing in the observed object. This is a very important aspect of any imaging system, and it depends mainly on the lens design and sensor used. Good telecentric lenses have very fine resolution, ranging from a few microns to several sub microns in empirical measurement. Furthermore, factors such as lens aberration, optical dust and alignment affect it.
A1. Yes, they eliminate perspective distortion, leading to accurate size measurement.
A2. The working distance determines how far the lens can be from an object while still producing a clear image. It is essential in choosing a lens for an application.
A3. Definitely, they provide precise measurements and help with things like checking quality, sorting, and guiding robotics.
A4. By selecting a high-quality telecentric lens with proper coating and a well-designed optical system, one can minimise aberrations like chromatic aberration.
A5. A telecentric lens provides consistent measurements from any angle, while a regular lens can distort the object's image. This was the main reason why telecentric lenses are very popular in industrial applications.
