For high-precision imaging, the combination of telecentric lenses and long focal lengths is an ideal choice. Telecentric lenses effectively eliminate perspective distortion, while long focal lengths provide greater magnification. This pairing is suitable for scenarios demanding extreme accuracy, such as detecting minute defects on semiconductor chips. It enables clear capture of microscopic imperfections on the chip surface, ensuring inspection accuracy.

When speed is a critical requirement, pairing a small-format lens with a short-focal-length lens offers distinct advantages. Small-format lenses reduce data processing demands, while short focal lengths enable rapid focusing and shorter imaging times. This combination significantly boosts sorting efficiency in high-speed applications like sorting lines, where items must be identified and categorized within extremely brief intervals.

For cost-sensitive projects, non-telecentric lenses paired with visible light bands offer an economical solution. Non-telecentric lenses are relatively low-cost, while visible light sources and sensors feature mature technology and affordable pricing. In standard textile inspection—where routine characteristics like fabric color and texture are examined without requiring high precision or specialized wavelengths—this combination effectively meets inspection needs while controlling costs.

In specialized environments like thermal imaging or fluorescence detection, infrared or ultraviolet lenses must be selected based on specific wavelength requirements. Infrared lenses capture infrared radiation emitted by objects for thermal imaging applications, while ultraviolet lenses detect ultraviolet light emitted by fluorescent substances, meeting the specific requirements of fluorescence inspection. Ultimately, lens selection must be closely aligned with the actual application scenario, balancing factors such as precision, speed, cost, and environmental conditions to achieve the optimal choice.

Selection Guide ：

Precision Priority: Opt for telecentric lenses + long focal length combinations

Speed Priority: Opt for small image sensors + short focal length lenses

Cost-Sensitive: Non-telecentric lenses + visible light spectrum

Special Environments: Select infrared/ultraviolet lenses based on wavelength requirements