Ceramic glaze appearance: control glare before judging colour and marks
The source polarized-light image shows a pale glazed part with a dark irregular region on its surface. It is a practical starting point for separating glare, colour variation and local marks in a repeatable inspection recipe.
Stabilize glare and colour processing before assigning a surface threshold.
Real camera capture
- MethodWhite polarized ring illumination
- EvidenceReal application-lab capture
- SetupSource light identified; imaging kit proposed
- AcceptanceValidate on your own parts
Lighting application-lab catalog capture
What the camera saw
Cropped from the source test sheet; original test annotations are retained. Captures are not generated or enhanced. Drag a comparison slider, or open any image full size.
The challenge
Glossy glaze changes appearance with viewing angle, so a highlight can obscure or resemble a colour difference.
A useful recipe must preserve the actual mark while handling normal glaze and shape variation.
How it was solved
The source identifies the white LS-POR8090 polarized ring for ceramic surface colour-difference inspection.
Use the proposed colour camera and confirm a correctly sized lens-side analyzer. The source does not supply its analyzer orientation, exposure or colour-calibration settings.
Why it works
- 1
Controlling the illumination and analyzer orientation can reduce selected specular reflections, depending on the material and geometry.
- 2
A colour camera preserves colour information for the new trial; the source image itself does not provide calibrated colour difference or a before-and-after glare comparison.
Lighting application-lab catalog capture
Evidence you can inspect
A dark irregular region stands out against the pale glazed surface.
The source labels this ceramic colour-difference inspection with the white LS-POR8090 polarized light.
One source image, without colour calibration, a numerical colour difference, analyzer recipe or a demonstrated defect-detection rate.
From image contrast to a production decision
What to validate on your part
- 01
Rotate the analyzer
Find settings that reduce glare while preserving the required surface features.
- 02
Include glaze variation
Collect accepted colour, gloss and mould-shape variation along with known marks.
- 03
Control colour processing
Fix exposure, white balance and any colour-calibration method before comparing production parts.
From the demo to your test bench
Parts in this setup
LightTested
LS-POR8090
70 mm Polarised light, POR series (LS-POR8090)
White polarized LS-POR8090 ring identified in the ceramic example; printed housing 80 mm OD, 38 mm opening and 18 mm high. Confirm the matching camera-side analyzer for the trial.
$139.00
In proposed setup
CameraOur pick
MV-CS050-10GC
Hikrobot MV-CS050-10GC 5MP Area Scan Camera, GigE, IMX264, Color, Basic
5 MP colour global-shutter camera for colour and angle-coded contrast; confirm colour processing and exposure in the trial.
$739.00
In proposed setup
LensOur pick
LS-KF1628M-ML
16mm, F2.8, 1.1", C-mount, Macro lens (52 mm (-0.25X) to 546 mm (-0.03X)) (LS-KF1628M-ML)
Proposed 16 mm C-mount macro lens. The illustration uses its printed 0.1x magnification at 152 mm working distance. The proposed camera sensor gives a derived 84.456 × 70.656 mm field. Confirm field, focus and residual distortion on the actual sample; this is not calibrated measurement accuracy.
$319.00
In proposed setup
Camera test stationOur pick
LS-BT-XZ-G-6-6045
Camera stand with XZ adjustment and glass tray, height 600 mm (LS-BT-XZ-G-6-6045)
600 mm column, 600 × 450 mm breadboard, XZ adjustment, glass tray and two lighting holders as listed. Proposed bench fixture; confirm loads, travel and camera/lens clamps.
$359.00
In proposed setup
"Tested" identifies the part named in the source. "Our pick" is a proposed alternative or supporting part. Confirm colour, optics, controllers, power supplies, cables and mounting before ordering.
The set-up
| Lighting | White polarized ring illumination |
|---|---|
| Test light | LS-POR8090, white |
| Ring envelope (printed) | 80 mm OD × 38 mm opening × 18 mm high |
| Camera and lens | Source versions not identified; current proposed parts below |
| 3D spacing | Illustrative, to be confirmed on the sample |
| Derived proposed field | 84.456 × 70.656 mm = sensor dimensions / 0.1x; source field not supplied |
| Mounting (proposed) | LS-BT-XZ-G-6-6045; 600 mm column, 600 × 450 mm base, glass tray and two light holders |
Mount the optics with intent
The station is an optical test bench, with its two lighting holders included in the catalog listing. The 3D column and base follow the published height and footprint. Carriages, clamps and part supports are schematic: confirm camera screw pattern, lens support, light fasteners, permissible load and actual travel before ordering.
Complete the electrical system
Select a controller against the exact light voltage, drive mode and power, then confirm camera data/power/I/O cables and a suitable PC. These are not silently added to the proposed optical kit. The matching camera-side polarizer/analyzer is a required trial item; confirm filter thread, clear aperture and orientation before ordering.
Build this system
Start from this setup, adapt it to your part.
The configurator opens with this study's camera, lens, light and station picked. Swap any part, check fit and price, then buy or ask for a quote.
Camera and available lens CAD are published models. Lens and light envelopes use printed dimensions. The linked station uses its published base size and column height; carriage, brackets, fittings, parts and spacing are illustrative. Confirm load, travel, fasteners and clearances before ordering. Light paths explain the arrangement and do not simulate optical performance. The illustrated ring position keeps the drawn viewing envelope inside its central aperture; verify vignetting and illumination on the actual sample. Representative part geometry is illustrative, not reconstructed inspection evidence.
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Make the next trial specific.
Tell us the part size, smallest defect or tolerance, available working distance, material and line speed. Include what a good part and a reject look like.
About this case study: the photos and camera images come from the application laboratory of the maker of the lighting and optics we sell, imaged on the parts shown; your results depend on your part, camera and set-up. This is an application-lab study, not a LumaSpec customer deployment. Source figures are reported results; proposed components require a fresh trial. The 3D scene illustrates the arrangement and does not simulate imaging performance.