Spring and hook assembly: diffuse reflections around a curved mechanism
A dome-lit source capture shows a shiny coil spring, its hook and surrounding mechanism. Broad illumination makes it possible to test the assembled geometry without relying on a single narrow glint.
Make the attachment visible, then validate the mechanical requirement independently.
Real camera capture
- MethodDiffuse white dome
- EvidenceReal application-lab capture
- SetupSource light identified; imaging kit proposed
- AcceptanceValidate on your own 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.
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
The wire and hook are curved reflective surfaces. A directional reflection can hide part of a coil or attachment.
The assembly rule must distinguish geometry, position and normal manufacturing variation.
How it was solved
The source uses the white LS-DS175 dome for spring-hook inspection. The camera views the part through the dome aperture.
A proposed fixture holds the assembly in a repeatable plane. Check dome clearance over the mechanism as well as lens clearance through the opening.
Why it works
- 1
A diffuse dome illuminates curved surfaces from many directions, reducing reliance on one specular path.
- 2
The image can support position or presence checks; it does not measure spring force, material condition or fatigue life.
Lighting application-lab catalog capture
Evidence you can inspect
The shiny spring coils, hook and surrounding mechanism are visible in the supplied image.
The source names spring-hook inspection using a white LS-DS175 dome, without numerical assembly results.
A lighting application example. Correct visible assembly cannot establish force, preload or mechanical durability.
From image contrast to a production decision
What to validate on your part
- 01
Define the assembly states
Capture correct, missing, displaced and incorrectly hooked springs with verified sample labels.
- 02
Vary the reflections
Test accepted wire finish, tilt and surrounding hardware.
- 03
Check mechanical requirements separately
Keep visual assembly checks separate from required force or functional tests.
From the demo to your test bench
Parts in this setup
LightTested
LS-DS175
116 mm Dome light source (LS-DS175)
White LS-DS175 dome named in the spring-hook example; printed 175 mm outer diameter, 35 mm camera hole and 83.7 mm height.
$449.00
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 for a bench contrast trial; confirm sampling, sensitivity and exposure on the actual part.Not available in the United States. Available for delivery to other countries.
$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)
Proposed 35 mm C-mount macro lens. The illustration uses its printed 0.25x magnification at 150 mm working distance. The proposed camera sensor gives a derived 33.7824 × 28.2624 mm field. Confirm field, focus, port clearance and residual distortion on the actual sample; this is not calibrated measurement accuracy.
$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 | Diffuse white dome |
|---|---|
| Test light | LS-DS175, white |
| Dome envelope (printed) | 175 mm OD × 35 mm camera hole × 83.7 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 | 33.7824 × 28.2624 mm = sensor dimensions / 0.25x; 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.
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.
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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.