Screw silhouettes: compare a collimated panel with telecentric system needs
A compact collimated panel produces a clear screw silhouette in this real application image. It is a practical contour-lighting example, separate from the telecentric thread-measurement study and its reported metrology result.
Collimated lighting improves a silhouette; stable magnification is a separate lens decision.
Real camera capture
- Proposed light housing (spec)64 × 64 × 19 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
Thread flanks and the underside of a head can collect stray light, making the apparent edge depend on the lighting geometry.
How it was solved
The source uses white LS-4PFT5050, a collimated panel with a 50 × 50 mm emitting surface. The proposed setup deliberately uses a conventional macro lens.
Collimated illumination and a telecentric imaging lens are different components. This case demonstrates the light; it does not borrow the accuracy claim of a different telecentric test.
Why it works
- 1
More directional backlighting can give the edge less wraparound than an uncontrolled luminous background.
- 2
A conventional imaging lens still changes scale with object distance. Add telecentric optics when stable magnification is part of the measurement requirement.
Lighting application-lab image sheet
Evidence you can inspect
Thread crests, roots and the head outline are visible in the silhouette.
The sheet describes clear contour imaging; it gives no pitch accuracy, repeatability or smallest measurable feature.
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
Calibrate the proposed optics
Set image scale using a reference at the screw plane and chosen aperture.
- 02
Challenge height variation
Repeat at the required part heights to quantify scale and edge-position changes.
- 03
Decide whether telecentric is needed
Compare the observed variation with the measurement tolerance before choosing the final lens.
From the demo to your test bench
Parts in this setup
LightTested
LS-4PFT5050
Collimated back light, 64 x 64 x 19 mm (LS-4PFT5050)
White collimated panel named in the source; 64 × 64 × 19 mm housing and 50 × 50 mm emitting surface.
$89.00
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, 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. Representative part geometry is illustrative, not reconstructed inspection evidence.
Metal parts and machining
Related case studies
Metal parts and machining
Spring-window appearance in a clutch plate
Use the spring-window pattern for appearance and prove mechanical function separately.Light in sourceLS-HFS150100 · whiteExplore the study
Metal parts and machining
Cutting-bit end-face appearance
Prove the local end-face signal before assigning a wear or damage threshold.Light in sourceLS-FLS74 · blueExplore the study
Metal parts and machining
Scratch contrast on a machined cylinder
A curved surface needs a tested angular coverage plan.Proposed light housing (spec)440 × 50 × 117.13 mmExplore the study
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.