In the fields of industrial manufacturing and quality inspection, precision and efficiency remain the core benchmarks for evaluating technological advancement. With the rapid development of smart manufacturing, traditional visual inspection methods struggle to meet the demands for high-precision, high-repeatability production due to issues like perspective errors and parallax interference. The emergence of double-telecentric lenses, leveraging their unique optical design and intelligent solutions, is redefining the boundaries of visual inspection, delivering revolutionary breakthroughs for industries such as precision manufacturing, electronic components, and automotive parts.

I. Double-telecentric lens: Redefining optical precision from principle to advantage

The double-telecentric lens is a special optical design whose core innovation lies in ensuring that both the object-side and image-side principal rays remain strictly parallel to the optical axis. This design completely resolves the perspective distortion and parallax issues caused by angle-of-view changes in traditional lenses, achieving two major breakthroughs:

1. Zero-error imaging: Regardless of an object's position within the depth of field, the image size remains consistently uniform, completely eliminating the “near large, far small” distortion.

2. Dual magnification support: Through optimized optical structure, it simultaneously provides two magnification levels, flexibly adapting to different inspection scenarios without frequent equipment changes.

Additionally, the double-telecentric lens delivers sharp imaging with a large depth of field, ensuring crisp, blur-free images across the entire field of view—even on complex curved surfaces or three-dimensional structures. Combined with its stray light suppression design, it effectively minimizes environmental light interference, guaranteeing stable and reliable detection data.

II. Core Solution: Software-Hardware Synergy to Build a Closed-Loop Intelligent Inspection System

The exceptional performance of the double-flange lens stems from the deep integration of software algorithms and hardware optical configurations:

1. Software Algorithm Layer:

① Sub-pixel edge extraction: Overcomes pixel-level limitations to achieve micron-level edge positioning accuracy;

② Defect feature learning: Utilizes deep learning models to automatically identify defect types such as scratches, holes, and character missing;

③ High-precision measurement tools: Incorporates intelligent calibration and compensation algorithms, enabling millisecond-level calculations for parameters including length, angle, and roundness.

2. Hardware Optical Configuration:

① Dual telecentric lens body: As the core component, it ensures fundamental optical performance;

② High-resolution camera: Optimized for lens optical parameters to capture detailed raw images;

③ Visual inspection lighting: Customized solutions such as coaxial lighting and ring lighting enhance defect feature contrast.

III. Comprehensive Application Coverage: From microscopic defects to macroscopic dimensions, one lens does it all.

The adaptability of the double-telecentric lens is exceptional, and it can be widely applied in the following fields:

1. Surface defect inspection: Micrometer-level defects such as screen scratches and cracks; missing characters and oxidation spots on metal surfaces; micro-pore blockage and shape abnormalities in ceramic filter elements.

2. Precision dimensional measurement: Mobile phone frame gap clearance, key height differential; Silicon steel laminate core stacking thickness, interlayer gap; Mechanical gear disc pitch, tooth profile deviation.

IV. Why Choose Double-Telecentric Lenses? Four Major Advantages at a Glance

• Eliminate parallax and distortion: Say goodbye to traditional lens perspective distortion, with data authenticity improved by over 90%.

• Double the efficiency: A single device supports two magnification levels, reducing the cost of switching equipment;

• Stable and reliable: Anti-stray light design adapts to complex industrial environments, with a failure rate below 0.1%.

• Cost Reduction and Efficiency Enhancement: Software algorithms undergo continuous upgrades, enabling new functionalities to be added without requiring hardware replacement.