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Machine vision is all about enabling machines to see like human eyes, but with greater precision and reliability. In this setup, the lens acts like the human eye, playing a crucial role. Traditional lenses often create perspective distortion, making objects appear larger when closer and smaller when farther away. This distortion introduces significant errors during precision inspection, much like using a magnifying glass where the size of the object changes with distance.
This is where the bi-telecentric lens enters like a magician. With its specialized optical design, it ensures that light entering and exiting the lens remains parallel to the optical axis, like a perfectly straight bridge for the light to travel. Regardless of the object's distance from the lens, the image size remains consistent, eliminating perspective errors and achieving far greater accuracy in inspections.
Additionally, the bi-telecentric lens acts as a strict guardian against stray light, ensuring that the image edges are exceptionally clear. This provides a solid foundation for subsequent image processing, boosting both accuracy and efficiency.
Multi-Surface Objects: When inspecting objects with multiple surfaces, such as food containers or beverage bottles, traditional lenses may introduce parallax errors, leading to inaccurate measurements. A bi-telecentric lens ensures precise measurement for every surface, serving as a tailored measurement tool for these tasks.
Tilted or Misaligned Objects: If the object is positioned at an angle relative to the lens, traditional lenses produce distorted images, compromising measurement accuracy. In contrast, a bi-telecentric lens acts like a steady navigation system, maintaining accurate imaging and measurements regardless of the object's tilt.
Unstable Object Positions: On production lines, objects often shift or bounce. Traditional lenses suffer from image quality degradation due to these distance variations. A bi-telecentric lens, however, acts like a stabilizer, eliminating errors caused by distance changes and ensuring consistent, reliable inspection results.
Complex Object Structures: For objects with intricate designs, such as perforated or three-dimensional components, traditional lenses may struggle with distortion and inaccurate measurements. The bi-telecentric lens, akin to a master sculptor, captures the object's true form and dimensions with exceptional precision.
Minimal Distortion and Uniform Brightness Requirements: Some inspection tasks demand images with virtually no distortion and uniform brightness. Traditional lenses may fall short, but the bi-telecentric lens, through its advanced design, delivers distortion-free, evenly lit images, providing an ideal basis for high-precision analysis and measurement.
Parallel Illumination for Defect Detection: Certain defects can only be detected under specific directional lighting. A bi-telecentric lens pairs seamlessly with parallel illumination systems, capturing defects with high accuracy and preventing missed detections or false positives caused by incompatible lighting.
Extreme Precision Demands: In applications requiring micron-level accuracy, where measurement errors must be limited to as little as one micron, traditional lenses cannot meet the challenge. The bi-telecentric lens, functioning like a high-precision measurement microscope, easily meets the stringent requirements of ultra-precise inspections.
In the realm of precision visual inspection, the bi-telecentric lens stands out as a true superhero. Solving an array of complex problems, it ensures that inspection results are both accurate and reliable. Whether it's tackling challenging measurement tasks or enhancing the stability of detection systems, the bi-telecentric lens continues to prove its unmatched value.
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