Material colour appearance: keep lighting changes out of the inspection
A swatch fan and a textured material have different recorded appearances under the two source lighting conditions. The practical task is to make colour comparisons repeatable across material and finish variation.
Compare the material against a controlled reference, not a changing capture setup.
Real camera capture
- Proposed light housing (spec)162 × 36 × 26 mm
- EvidenceReal application-lab captures
- Camera (proposed)2448 × 2048 colour
- Field (derived proposal)84.46 × 70.66 mm derived from printed 0.1x magnification
Explore it in 3D
Camera and available lens CAD are published models. Light envelopes and the station base/height use printed dimensions. Part shapes, brackets, holders, shielding and spacing are illustrative; they are not reconstructions of a source part or a complete mechanically validated assembly. Light paths explain the proposed arrangement and do not simulate optical performance. The proposed field is derived from the printed camera pixel dimensions and the stated lens magnification/working-distance pair, not measured from the source capture. Specimen colours in 3D are illustrative display colours, not a calibrated colour target or a simulation of the light spectrum. The 30 mm emitting width is printed; the 150 mm illustrated strip length is schematic and proposed, not a printed light-output specification.
Lighting application-lab image sheet
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.
Source natural-light condition: Same source swatch-fan example under the natural-light condition.
Source natural-light condition: Textured material under the source natural-light condition.
The challenge
A change in recorded hue can come from the lighting or camera as well as the material. Surface texture and gloss make that distinction harder.
How it was solved
The source compares natural-light and white-light photographs without identifying a calibrated reference, camera processing or exact source light. The proposed colour camera and two natural-light bars provide a fresh controlled trial.
The swatch fan is an illustrated sample, not a certified calibration chart. Its printed codes do not establish measured reference colours.
Why it works
- 1
Keeping illumination geometry and colour processing fixed helps separate material variation from capture variation.
- 2
These photographs demonstrate changed appearance, not a numerical colour-error measurement or an accepted/rejected production sample set.
Lighting application-lab image sheet
Evidence you can inspect
The swatches and textured material change recorded appearance between the source lighting conditions.
The source supplies labelled photographs but no calibrated colour measurement, processing settings or acceptance tolerance.
An application-lab lighting demonstration, not a customer deployment or a qualified production inspection. Proposed camera, lens, fixture and scene spacing require a fresh trial. Source observations do not establish a defect-size limit, accuracy guarantee or production false-call rate.
From image contrast to a production decision
What to validate on your part
- 01
Establish the reference
Select an appropriate colour reference and lock camera exposure, white balance and processing.
- 02
Separate colour and gloss
Test the actual material finish, texture and light angle rather than relying on one flat sample.
- 03
Measure repeatability
Repeat captures across reloads, batches and allowed ambient-light conditions before setting a colour tolerance.
From the demo to your test bench
Parts in this setup
LightOur pick
LS-SPC-0113
Natural light, 162 x 36 x 26 mm (LS-SPC-0113)
Two proposed broad-spectrum natural-light bars for adjustable illumination. Each printed housing is 162 × 36 × 26 mm; exact source light is not named. The 30 mm emitting width is printed; the 150 mm illustrated strip length is schematic and proposed, not a printed light-output specification.
$599.00
In proposed setup · quantity 2
CameraOur pick
MV-CS050-10GC
Hikrobot MV-CS050-10GC 5MP Area Scan Camera, GigE, IMX264, Color, Basic
Proposed 5 MP colour global-shutter camera, 2448 × 2048 pixels at 3.45 µm, C-mount. Colour processing, exposure and white balance must be controlled; the source camera is unidentified.Not available in the United States. Available for delivery to other countries.
$739.00
In proposed setup
LensOur pick
LS-FFL-1454
16mm, F2.8, 1.1", C-mount, Macro lens (52 mm (-0.25X) to 546 mm (-0.03X)) (LS-FFL-1454)
16 mm C-mount macro lens. Its printed 0.1x / 152 mm working-distance pair gives a derived 84.46 × 70.66 mm field on the proposed camera. Confirm focus, coverage and fixture clearance.
$319.00
In proposed setup
Camera test stationOur pick
LS-MNT-0097
Camera stand with XZ adjustment and glass tray, height 600 mm (LS-MNT-0097)
600 mm column, 600 × 450 mm breadboard, glass tray and two lighting holders. Proposed bench fixture; actual load, travel, clamps, mounting fasteners and light clearance must be confirmed.
$629.00
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
| Source camera | Not identified in the source sheet |
|---|---|
| Camera and lens | Proposed catalog components |
| Proposed field | 84.46 × 70.66 mm derived from printed 0.1x magnification |
| Lens-to-part in proposed scene | 152 mm; printed working-distance pair |
| Mounting (proposed) | LS-MNT-0097 · catalog test station with two lighting 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.
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. Light envelopes and the station base/height use printed dimensions. Part shapes, brackets, holders, shielding and spacing are illustrative; they are not reconstructions of a source part or a complete mechanically validated assembly. Light paths explain the proposed arrangement and do not simulate optical performance. The proposed field is derived from the printed camera pixel dimensions and the stated lens magnification/working-distance pair, not measured from the source capture. Specimen colours in 3D are illustrative display colours, not a calibrated colour target or a simulation of the light spectrum. The 30 mm emitting width is printed; the 150 mm illustrated strip length is schematic and proposed, not a printed light-output specification.
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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.