Rubber gaskets: make local surface changes stand out
A real blue-light capture turns a dark rubber gasket into a bright ring with visible local surface differences. A multi-angle ring is useful to test when a single reflection direction hides the feature of interest.
Use multi-angle light to test visibility around the entire seal.
Real camera capture
- Proposed light housing (spec)Ø225 × 64 mm
- EvidenceReal lighting-lab captures
- Camera (proposed)2448 × 2048 monochrome
- Field (derived proposal)33.78 × 28.26 mm
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.
The challenge
Dark rubber absorbs light, while curved sealing faces return highlights unevenly. A usable inspection needs contrast around the ring, not just at one point.
How it was solved
The source identifies the blue LS-RNMU225 configuration. The catalog lists the base model without a fixed blue variant; the proposed quote therefore records blue as a configuration to confirm.
The source does not state which zones were active or their intensity. The 3D ring illustrates the envelope and viewing aperture, not the exact tested zone settings.
Why it works
- 1
Lighting from more than one elevation can reveal surface slopes that a single direction misses.
- 2
A bright ring and dark local differences are visible, but the image does not prove leak tightness or identify the physical cause of each mark.
Lighting application-lab image sheet
Evidence you can inspect
The supplied camera image shows a bright gasket ring with localized changes in its surface appearance.
The sheet reports uniform imaging and visible defects; it gives no defect dimensions or active-zone recipe.
A lighting application-lab demonstration. The source supplies no customer deployment, defect-size limit, repeatability study or production false-call data. Proposed camera, lens, field, mounting and spacing are not the original tested system.
From image contrast to a production decision
What to validate on your part
- 01
Define the real reject
Use known tears, flash, contamination and acceptable moulding texture near your acceptance limit.
- 02
Sweep lighting zones
Record zone combinations and intensity alongside images, keeping exposure fixed.
- 03
Check the whole circumference
Repeat at different rotations and loading heights; validate any blind regions and fixture shadows.
From the demo to your test bench
Parts in this setup
LightTested
LS-RNMU225
200 mm Multi-angle ring light (LS-RNMU225)
Source uses the blue configuration; confirm blue wavelength, zones and controller before ordering.Colour: Blue, as required by source trial; confirm configuration; Zones: Confirm zone count and drive channels against application
Configuration to confirm
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, 2448 × 2048 pixels, 3.45 µm pixels and C-mount. Proposed for a bench contrast trial; the source does not identify its camera. Requires separate camera power; this NPOE model does not support PoE.
$819.00
In proposed setup
LensOur pick
LS-KF3528M-ML
35mm, F2.8, 1.1", C-mount, Macro lens (59 mm (-0.7X) to 150 mm (-0.25X)) (LS-KF3528M-ML)
35 mm C-mount macro lens; its printed 0.25x at 150 mm working distance gives a derived 33.78 × 28.26 mm field on the proposed camera. Confirm light coverage and focus on the actual part.
$339.00
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 evidence | Application-lab source captures |
|---|---|
| Camera and lens | Proposed catalog components; source camera unspecified |
| Proposed field (derived) | 33.78 × 28.26 mm at 0.25x |
| Lens working distance (spec) | 150 mm at the listed magnification |
| Mounting (proposed) | LS-BT-XZ-G-6-6045 · 600 mm station, glass tray and 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. 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 part geometry is illustrative and is not reconstructed from the camera image. The proposed field is derived from the printed lens magnification and camera pixel dimensions; actual coverage and focus need a bench check. 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.
Plastics, rubber and ceramics
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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.