Application Scenarios for Telecentric Lenses

(1) High-precision dimensional measurement: In industries such as automotive parts manufacturing and electronic components production, the dimensions of parts need to be measured with high precision. Telecentric lens can eliminate the measurement error caused by the object distance change, to ensure the accuracy of the measurement results. For example, in the production of automotive engine block, the use of telecentric lens can accurately measure the cylinder bore, the diameter of the piston and other key dimensions, to ensure the assembly accuracy of the parts.

(2) Appearance defect detection: For some products with high surface quality requirements, such as cell phone screens, integrated circuit boards, etc., telecentric lenses can provide uniform illumination and clear imaging, making it easy to detect small scratches, cracks, bubbles and other appearance defects. Cell phone screen, for example, telecentric lens can clearly capture the screen surface of the smallest defects, to help manufacturers screen out substandard products in a timely manner to improve product quality.

(3) Electronic chip inspection: In the process of chip manufacturing, it is necessary to carry out high-precision inspection of the chip's photolithography pattern, circuit wiring and so on. Telecentric lenses can provide high-resolution, distortion-free images, which help detect tiny defects and errors on the chip and ensure the performance and quality of the chip.

Application Scenarios of Common Industrial Lenses

(1) General industrial monitoring: In the production workshop, warehouse and other places in the factory, it is necessary to monitor the production process, equipment operation status, personnel operation and other real-time monitoring. General industrial lens can provide a large field of view and clear images to meet the general monitoring needs. For example, in the automated production line next to the installation of ordinary industrial lens, the operator can monitor the screen real-time understanding of the product flow on the production line, equipment operating status, etc., to detect and deal with abnormalities in a timely manner.

(2) Logistics and warehousing management: in logistics and distribution centers, warehouses and other scenarios, ordinary industrial lenses can be used for identification, positioning and tracking of goods. Through the ordinary industrial lens installed on the shelves, forklifts and other equipment, combined with image recognition technology, it can realize the automatic inventory of goods, inventory management, forklift navigation and other functions to improve the efficiency and accuracy of logistics and warehouse management.

(3) Robot vision guidance: in the robot vision system, ordinary industrial lenses can provide environmental information for the robot to help the robot perform operations such as target recognition, path planning and obstacle avoidance. For example, in robot welding, assembly and other tasks, ordinary industrial lenses can obtain the position and attitude information of the workpiece in real time to guide the robot to accurately complete the operation.

Distinguishing methods for lens application scenarios

(1) Precision requirements

Telecentric lenses: Suitable for scenarios with extremely high precision requirements, such as micron or even sub-micron size measurement and defect detection. If you need to accurately measure the size of the object, and the measurement error is required to be controlled within a very small range, or need to detect extremely small defects, telecentric lens is a better choice.

Ordinary industrial lenses: for precision requirements are not particularly high, only need to carry out general observation, monitoring and identification of the scene, ordinary industrial lenses can usually meet the demand. For example, in some of the appearance of the object for general inspection, or the positional accuracy requirements in millimeter-level applications, ordinary industrial lenses can be competent.

(2) Object distance variation

Telecentric lens: when the object distance changes within a certain range, telecentric lens can maintain the size and clarity of the image is basically unchanged, especially suitable for the application of the object distance is not stable. For example, in the automated production line, the object may be in different positions through the detection area, the use of telecentric lenses can ensure that in the case of changes in the object distance can still obtain accurate measurement and detection results.

Ordinary industrial lenses: The imaging of ordinary industrial lenses will change significantly in size and sharpness as the object distance changes. If the object distance is relatively fixed, or the object distance changes to the imaging of the scene does not have much impact, ordinary industrial lenses can work normally.

(3) Field of view requirements

Telecentric lens: usually has a small field of view angle, suitable for high-precision observation and measurement of a small range of objects. If a single or a few objects need to be detected and measured in detail, and the details of the objects are required to be high, telecentric lenses can provide better results.

Ordinary industrial lenses: generally have a large field of view and are able to observe a large range of objects at the same time. In scenes where you need to monitor a large area, observe multiple objects at the same time, or understand the overall layout of an object, ordinary industrial lenses are more suitable.