001 · Eyewear · Certainty AI

Sunglass Lens Inspection Automation

Polarized · Mirrored · Tinted

Style meets certified safety. Visual, cosmetic, and optical inspection of sunglass lenses with precision optics, polarization metrology, and Certainty AI.

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LIVE · Lens Cell
VISION AI
Sunglass lens inspection
Scratch
<50µm
Axis
±0.5°
Rate
60 - 100/hr
Status
PASS
002 · Challenges

Why sunglass lenses are uniquely challenging

Sunglass lenses are transparent, curved, and often coated or laminated. Typical hurdles include:

Transparency + High Gloss

Glare hides sleeks, hairline scratches, pinholes, and stains.

Polarizing Films

Demand axis accuracy and high extinction; mis-alignment causes visual strain.

Tint & Gradient Uniformity

Uneven dyeing or mirrored layers create blotches and hot-spots.

Mirror/IR/AR Coatings

Specular reflections confuse classic vision tools.

Curvature & Decentration

Refraction shifts apparent defect position; edge chips affect assembly.

Pair Matching

Left-right pair must match in axis, tint, and geometry for customer comfort.

003 · Intelgic Solution

Task-matched lighting + polarization metrology

Task-Matched Lighting

  • Telecentric/collimated backlight for silhouette, edge chips, CT/ET and wedge
  • Coaxial bright-field for coating pinholes, haze, water spots, rainbow
  • Low-angle dark-field for sleeks, micro-scratches, digs
  • Cross-polarization to suppress glare on mirrored/AR surfaces
Task matched lighting

Polarization Metrology

Automated axis detection using a programmable polarizer/analyzer pair with rotation sweep. Extinction/efficiency estimation and L-R axis match for pairs.

Spectral/Transmission

Optional UV/visible source + sensor to estimate luminous transmittance and UV cut; gradient/tint uniformity maps.

Custom Vision Design

Lighting geometry, optics, and motion tuned per SKU to material, base curve, tint/coat stack, and takt time.

004 · What We Inspect

Comprehensive defect coverage

Surface & Coatings

  • › Hairline scratches, sleeks, scuffs, digs/pits
  • › Mirror/IR, AR, hard-coat pinholes, streaks, haze, delamination, water spots
  • › Contamination: fingerprints, polish residue, dust nibs

Polarization & Tint

  • › Axis and efficiency/extinction; pair axis match
  • › Tint/gradient uniformity and ΔE color variance maps
  • › UV/visible transmittance estimates; photochromic response

Edges & Geometry

  • › Bevel chips, shelling, sharp edges
  • › Diameter, optical center vs. marks, CT/ET, wedge
  • › Decentration inference via marks and optical center analysis

Layout & Markings

  • › Brand logos, laser/micro-marks, ink stamps
  • › OCR/OCV verification
  • › Placement tolerances vs. datums
005 · Stations & Use Cases

Typical stations across the line

Post-Tinting

Gradient and uniformity maps; early tint defects before coating

Post-Coating

Mirror/AR/hard-coat: glare-suppressed pinhole and haze detection

Polarization Station

Axis/efficiency measurement and left-right pair matching

Post-Edging/Finishing

Bevel chips, diameter, wedge, mark verification

Final QC & Packaging

Full audit → DQC with optical and cosmetic results

006 · System Architecture

Imaging hardware + vision software

Imaging Hardware

  • › Cameras: high-resolution area-scan (12-45 MP) with HDR for high-gloss scenes
  • › Optics: telecentric for metrology; high-NA macro for micro-defects; liquid lens autofocus
  • › Lighting: telecentric/collimated backlight, coaxial bright-field, low-angle dark-field, polarization kits, uniform dome
  • › Polarization unit: motorized polarizer/analyzer with angular encoder; reference calibration lens set
  • › Spectral/UV module (optional): stabilized UV/visible source and calibrated sensor
  • › Motion & fixturing: rotary/flip module; auto-centering nests; barcode/RFID reader
  • › Controllers: industrial PCs with GPU acceleration; synchronized strobes; PLC/robot IO

Vision Software & Integration

  • › Recipe-based inspection by material, tint, coating, and base curve
  • › Reflection-aware segmentation; pair-aware comparison for L-R matching
  • › Metrology: diameter, CT/ET, wedge, optical center vs. marks; logo presence/position
  • › Polarization analysis: axis (deg), relative extinction/efficiency; pass/fail to spec
  • › Tint/UV analysis: uniformity maps, ΔE statistics, UV cut estimate
  • › Real-time PASS/FAIL with reason codes; rework routing and reject diverter control

Integration Layer

  • › PLC/robot, MES/ERP via OPC-UA, Modbus/TCP, Ethernet/IP, REST APIs
  • › Label/laser marker integration for serialized IDs; data exchange with coaters and edgers
007 · Capabilities & Specs

Performance, DQC, and deployment

Pair-Matching Analytics

  • › Axis delta (L-R) with tolerance bands
  • › Tint ΔE match and gradient profile overlay
  • › Geometry match: diameter, CT/ET, wedge
  • › One-click pair approval and DQC bundle

Performance & Throughput

  • › Scratches/digs <10 µm; coating pinholes ≥20-30 µm
  • › Polarization axis: ±0.5-1.0°
  • › Tint uniformity ΔE maps; UV cut estimate
  • › 600-1,800 lenses/hr manual; 10-30/min automated

Digital Quality Certificate

  • › Lens/pair ID, job, timestamp, recipe version
  • › Annotated defect snapshots and measurements
  • › PASS/FAIL logic; operator/station traceability
  • › Optional transmittance and photochromic plots

Dashboard & KPIs

  • › Yield by shift/material/tint/coat
  • › Defect Pareto (coating, surface, edge, layout)
  • › Pair-match rates (axis, tint, geometry)
  • › FP/FN trends; CSV/PDF exports; REST APIs

Deployment Options

  • › On-premises for real-time control
  • › Cloud or hybrid for centralized DQC
  • › Cross-plant benchmarking and model fleet updates
  • › Mobile app for field returns and supplier audits

Safety & Compliance

  • › Light guards, interlocks, E-stops
  • › Anti-scratch handling fixtures
  • › Audit trails, role-based access, e-signatures
  • › Documentation support for eyewear QMS

Implementation Process

  • › Discovery & samples: defect taxonomy, throughput
  • › Feasibility lab: optics, lighting, polarization trials
  • › Pilot cell: line integration and KPI validation
  • › Deployment + scale & support with SLA

Technical Specifications

  • › Cameras: 12-45 MP area; HDR/global shutter
  • › Optics: telecentric 0.3-1.0×; macro up to 5×
  • › Lighting: backlight, coaxial, dark-field, cross-pol, dome
  • › Interfaces: OPC-UA, Modbus/TCP, Ethernet/IP, REST
008 · FAQ

Frequently asked questions

Yes. Cross-polarized coaxial imaging isolates coating glare, while a rotating analyzer measures axis and extinction through the mirror stack.
Uniform dome illumination and calibrated colorimetry generate ΔE maps and gradient slope profiles for pass/fail decisions.
We estimate UV blocking with a controlled UV source/sensor module and record it in the DQC. For formal certification to specific standards, we can attach results from your off-line instruments.
Yes. The pair-matching module compares axis, tint ΔE, and geometry (diameter, CT/ET, wedge) and blocks packaging if out of tolerance.
We can run stimulus-based darkening/clearing tests and log kinetics curves alongside standard cosmetic/geometry checks.

Solution

Industrial AI

LEGAL

Head Quarter

17352 Murphy Ave Suite 101
Irvine, CA 92614
Phone: (949) 317-2420

Branch Office

5ES7-H, 5Th Floor, East Tower, Mani Casadona, Plot no -IIF/04, Action Area -IIF, Newtown, Kolkata-700160

Certificate

intelgic ISO 27001 certification

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