A windshield can pass every strength test and still fail the driver. A small bubble in the PVB sitting in the driver's line of sight, a pinhole in the black frit band or a slight lens effect in front of the ADAS camera can each turn a good lite into a warranty claim. Automotive glass inspection with AI vision checks every lite at every key step, classifies each defect by type, size and zone, and holds the ones that matter before they reach HUD or camera fitment. See it on real glazing images in a short windshield inspection demo.
Catch Windshield and Sidelite Defects Before They Reach the Car
iFactory Vision Defect Detection puts cameras after edge grinding, frit printing, bending and tempering, lamination and final inspection. The AI classifies every defect by type, size and zone, holds the lite and links it to the step and shift that made it.
Not Every Square Centimetre of Glass Is Equal
A bubble in the frit band is invisible to the driver. The same bubble in front of the driver's eyes is a reject. That is why windscreen quality is judged by zone. UN Regulation No. 43 defines test areas from the driver's V points for cars (M1) and caps optical distortion at 2′ of arc in Zone A and 6′ of arc in reduced Zone B. The AI maps each defect to a zone before it decides anything. Ask our glazing support team how zones are set up from your OEM drawing.
For vehicles other than cars, R43 uses Zone I. It is drawn from an eye point 625 mm above the seat R point, bounded by fixed angles set out in the regulation's annex, with the same 2′ of arc distortion limit.
Where Each Defect Is Born on the Line
Most glazing defects are made at one step and found at another, often hours later at final inspection. A shell chip from the grinder, a smear from the frit screen and a bubble from a weak de-air cycle all look like "reject" on a paper sheet. Cameras placed after each step catch the defect where it was born, so the fix goes to the right machine. Sidelites and backlites are usually bent and tempered as single lites, while windscreens are bent as a pair and laminated with a PVB interlayer, and laminated sidelites follow the same route. Walk your own line with our glazing vision engineers.
Five Ways to Light Glass, and What Each One Sees
Clear glass hides its own defects. A camera only sees a bubble, a scratch or a lens effect when the light is set up to reveal it, which is why glazing lines use more than one lighting method. Transmitted light shows dark point defects, while reflected light is needed to identify tin pick-up. Distortion is measured as optical power, usually in millidiopters, either through the glass against a grid or by reflecting a fringe pattern off the surface. Our vision support team can help you choose for each station.
Know Which Step Made the Defect, Not Just That It Exists
iFactory links every held lite to the station, cycle and shift that produced the defect. Quality engineers ask in plain words and get the pattern, the evidence and the lites at risk.
One Defect Size, Four Different Answers
A fixed size limit across the whole lite either rejects good glass or ships bad glass. The matrix below shows how the AI combines size class and zone into a decision. It is an illustration only. The real size bands and counts come from your OEM drawing and control plan, and the system applies exactly what you load. Build your own matrix with our quality vision team.
Two Small Areas That Carry the Biggest Risk
A head-up display uses the windscreen as a mirror. Light reflects off both the inner and the outer glass surface, so the driver can see a main image and a fainter ghost. HUD windscreens use a wedge-shaped PVB interlayer so the two surfaces are not parallel and the images overlap. A fixed wedge gives full overlap only at a point or along a line, which is why some designs vary the wedge angle. The ADAS camera has a different problem. It looks through a small clear window in the frit, and any lens effect, point defect or haze there changes what the camera sees. Talk to our support engineers about inspecting both areas.
- Ghost image separation checked in the HUD eye box
- Wedge angle and interlayer thickness profile
- Reflected distortion and shape by deflectometry
- Point defects judged against the HUD drawing
- Every point defect in the window held for review
- Optical power and haze across the camera's view
- Frit edge around the window clean and in position
- Bracket and primer present for camera mounting
Six Numbers Worth Tracking From Day One
When a car plant reports a ghost image or a bubble in the driver's view, the glass supplier needs to answer fast: which lites, which day, which step. A paper tally can count rejects, but it cannot link a defect to the lite, the zone and the autoclave cycle. A lite record with images can, and it turns into the measures below. See a full lite record in a live record walkthrough.
Size the Inspection Load With Your Own Numbers
The value of catching a defect before it ships depends on your contracts, your OEM penalties and your scrap costs, which only you know. Instead of a savings claim, this worksheet sizes the inspection load. Every input is assumed. Replace them with your own figures and the arithmetic stays the same. Our support team can help you build a fuller case.
Add your own scrap cost per lite, OEM claim costs and the cost of a containment sort. Keep them out of the sum unless your own records support them.
A Rollout Checklist for Your Glazing Line
Tick through these items as you plan cameras, zones and limits. Most of the work is agreeing the rules before the first camera goes up. Plan the first station in a rollout planning call.
Cameras, Lighting and Edge Server Delivered as One Package
iFactory delivers Vision Defect Detection as a turnkey system. Cameras and lighting are fitted at your chosen stations, and a pre-configured NVIDIA AI server ships racked and ready with the glazing defect models loaded, so images are processed on site at line speed. You rack it, plug in power and Ethernet, and the AI is live. To scope it for your line, talk to our deployment team.
- Pre-configured NVIDIA AI edge server, racked and ready
- Cameras and lighting matched to each station
- Defect models tuned on your own glass images
- Zone maps loaded from your OEM drawings
- Lite hold signals to your line controls
- Lite records with images, zones and source step
- 24×7 remote monitoring of models and hardware
Stations agreed, cameras, lighting and server installed, zone maps and limits loaded.
Models tuned on your glass and run silently beside your inspectors.
Hold logic switched on, inspectors trained, daily trend review started.
Vision Defect Detection Built for Glazing Lines
iFactory is built for the way glass is made: many steps, defects that surface late and tight zone rules from the car maker. See how it fits your line in a pilot walkthrough.
What Glazing Quality Teams Ask About AI Inspection
Put Every Lite Through the Same Careful Eye
Cameras after each key step, defects classified by type, size and zone, held lites linked to the step and shift that made them. Delivered turnkey and live in 6 to 12 weeks.
