Recessed features: compare directional images before combining them
Four source captures illuminate the same recessed features from different zones. The changing shadows preserve information that an all-on image can hide; the separately supplied processed output is not a calibrated height map.
Preserve directional evidence before choosing how to combine it.
Real camera capture
- Proposed light housing (spec)Ø91 × 25.5 mm
- EvidenceReal application-lab captures
- Camera (proposed)2448 × 2048 monochrome
- Field (derived proposal)33.78 × 28.26 mm derived from printed 0.25x magnification
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
A shallow circular recess can look different with each lighting direction. Lighting every direction simultaneously can fill in the shadow that reveals a local slope.
How it was solved
The source belongs to the segmented-light family but does not name its exact unit, colour or camera. The proposed white LS-2HPR75-4 is a four-zone catalog choice, not an identified source SKU.
The source supplies four individual zones, an all-zones capture and a processed output. The processing method is not stated. In 3D, the proposed ring is shown with all four white zones on; seams and the specimen depth are illustrative.
Why it works
- 1
Different directions produce different intensity and shadow responses on a recessed surface. Keeping the individual frames lets a trial compare those responses.
- 2
Multiple lighting directions do not by themselves produce calibrated 3D. No height reconstruction, recess depth, processing algorithm or detection threshold is established by the source.
Lighting application-lab image sheet
Evidence you can inspect
The same circular recesses have different highlight and shadow patterns under the four zones.
The source labels four zone captures, all-zones illumination and a processing effect, without naming the source unit or processing method.
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
Capture the directions separately
Keep exposure and gain fixed and save every zone image before creating a combined result.
- 02
Use known surface conditions
Include acceptable recesses and independently confirmed deformations, scratches or contamination.
- 03
Validate the output
Measure contrast and false decisions; use a separately calibrated height method if depth is the acceptance criterion.
From the demo to your test bench
Parts in this setup
LightOur pick
LS-2HPR75-4
2.5D zone segmented light, Ø91 mm (LS-2HPR75-4)
Proposed four-zone diffuse ring:91 mm outer diameter, 41 mm opening, 25.5 mm height and 24 V drive. Exact source unit is not identified; confirm a controller with independent zone channels.Colour: White proposed; source colour is not stated; Zone drive: 4 independent zones; confirm matching controller and acquisition timing
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
Proposed 5 MP monochrome global-shutter camera, 2448 × 2048 pixels at 3.45 µm, C-mount. The source camera is unidentified. This NPOE model requires separate power and 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 / 150 mm working-distance pair gives a derived 33.78 × 28.26 mm field on the proposed camera. Confirm focus, coverage and the actual part plane.
$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, glass tray and two lighting holders. Proposed bench fixture; actual load, travel, clamps, mounting fasteners and light clearance must be confirmed.
$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
| Source camera | Not identified in the source sheet |
|---|---|
| Camera and lens | Proposed catalog components |
| Proposed field | 33.78 × 28.26 mm derived from printed 0.25x magnification |
| Lens-to-part in proposed scene | 150 mm; printed working-distance pair |
| Mounting (proposed) | LS-BT-XZ-G-6-6045 · 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.
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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.