Watch-bracelet links: inspect finish across repeated reflective surfaces
The source capture shows a bracelet-link array with bright boundaries and darker link faces. The repeated reflective surfaces make it a useful trial for separating surface marks from normal link edges and finish direction.
Use accepted finish variation to stop normal link reflections becoming defects.
Real camera capture
- Light in sourceLS-BAR-1349 · white
- EvidenceReal application-lab image
- Imaging kitCamera, lens and fixture proposed
- AcceptanceValidate on representative parts
Explore it in 3D
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. Representative part geometry is illustrative, not reconstructed inspection evidence. The specimen and lighting angle are representative, not dimensions or settings recovered from the source capture.
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
Every link presents another curved or angled reflective face to the same camera.
A bright boundary is normal, while a scratch may be faint and depend strongly on orientation.
How it was solved
The source identifies the white adjustable four-sided light for scratch inspection on a watch chain. The image shows the link pattern, without labelling an individual reject.
Use known finish defects and accepted machining or brushing marks to decide which per-side lighting recipe preserves useful face detail.
Why it works
- 1
Independent illumination directions give different reflected signals from link edges, faces and local marks.
- 2
The observed image does not measure scratch depth or establish a cosmetic acceptance grade.
Lighting application-lab catalog capture
Evidence you can inspect
Bright link boundaries and fainter surface detail are visible across the array.
The source labels this watch-chain scratch inspection under the white adjustable four-sided light.
No particular defect is labelled, and no scratch dimensions, appearance-grade limits or detection statistics are given.
From image contrast to a production decision
What to validate on your part
- 01
Include finish orientation
Test every accepted brushing or polishing direction along with known scratches.
- 02
Check link positions
Cover the centre, ends and allowed articulation of the bracelet sample.
- 03
Agree the cosmetic boundary
Use labelled accepted and rejected samples and record false calls before choosing thresholds.
From the demo to your test bench
Parts in this setup
LightTested
LS-BAR-1349
Four-side adjustable bar light (LS-BAR-1349)
White LS-BAR-1349 adjustable four-sided light identified in the source watch-chain scratch example. Printed outer envelope 154 × 154 × 42 mm; the exact test angles are not reported.
$209.00
In proposed setup
CameraOur pick
MV-CS050-10GM(NPOE)
Hikrobot MV-CS050-10GM(NPOE) 5 MP GigE area scan camera, IMX264, Gen 2 basic version, Mono, Without PoE
5 MP monochrome global-shutter camera proposed for a contrast trial. Confirm field, sampling, exposure and algorithm on the actual application.Not available in the United States. Available for delivery to other countries.
$819.00
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)
Proposed 16 mm C-mount macro lens at its printed 0.1x magnification / 152 mm working-distance pair. The proposed 2448 × 2048 sensor with 3.45 µm pixels gives a derived 84.456 × 70.656 mm field; confirm focus, coverage and residual distortion on the real sample.
$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, XZ adjustment, glass tray and two lighting holders as listed. Proposed bench fixture; confirm loads, travel and camera/lens clamps.
$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
| Tested light | LS-BAR-1349, white |
|---|---|
| Source camera / lens | Not specified in the source image caption; proposed parts below |
| Proposed lens point | 0.1x at 152 mm, printed lens pair |
| Derived proposed field | 84.456 × 70.656 mm = sensor dimensions / 0.1x; not a source test field |
| Light envelope (printed) | 154 × 154 × 42 mm |
| Mounting (proposed) | LS-MNT-0097; 600 mm column, 600 × 450 mm base, glass tray and two included 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. 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. Representative part geometry is illustrative, not reconstructed inspection evidence. The specimen and lighting angle are representative, not dimensions or settings recovered from the source capture.
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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.