MV-CS050-10GM(NPOE)View part & specifications →Browse camera options →Home / Case studies / Four-zone imaging of recessed circular features
Application study · Formed parts and surface inspectionRecessed 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.
- 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
Test stationIncluded light holdersCameraObiettivoIlluminazionePartCampo visivo
Drag to rotate · scroll to zoomWalk through this setup 5 guided stops
From component to inspection
Understand each choice.
Choose a stop to frame the part in 3D and see why it belongs in this setup. The component notes and links remain available if 3D cannot load.
Proposed component
MV-CS050-10GM(NPOE)
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.
Proposed component
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.
Proposed component
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.
Proposed component
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.
Inspect the real capture
Follow the contrast to the part.
Preserve directional evidence before choosing how to combine it.
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.
From the demo to your test benchCameraMV-CS050-10GM(NPOE)View part & specifications →Browse camera options → Imaging lens
LS-KF3528M-MLView part & specifications →Browse imaging lens options → Inspection light
LS-2HPR75-4View part & specifications →Browse inspection light options → Test station & mounts
LS-BT-XZ-G-6-6045View part & specifications →Browse test station & mounts options →
Build around the parts you can buy.
Explore each component, check its specifications and compare alternatives. The proposed quote includes the linked test station; its catalog listing includes two lighting holders.
MV-CS050-10GM(NPOE)View part & specifications →Browse camera options →LS-KF3528M-MLView part & specifications →Browse imaging lens options →LS-2HPR75-4View part & specifications →Browse inspection light options →LS-BT-XZ-G-6-6045View part & specifications →Browse test station & mounts options →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.
Configure the mounting station →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.
Lighting application-lab image sheet
Evidence you can inspect
Visible in the images
The same circular recesses have different highlight and shadow patterns under the four zones.
What the source reports
The source labels four zone captures, all-zones illumination and a processing effect, without naming the source unit or processing method.
How to use this evidence
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.
What the camera saw
Cropped from the source test sheet; original test annotations are retained. Captures are not generated or enhanced. Drag the comparison slider or use the image buttons.
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.
From image contrast to a production decision
What to validate on your part
A useful sample image is the starting point. These are the checks that turn the concept into a defensible inspection.
- 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.
Explore your inspection requirementsNo limit from motion
How many pixels cover your feature?
Compare feature coverage, camera pixel requirements and exposure using your own planning inputs. These are calculated planning values, not inspection results or an accuracy specification.
Editable planning scenario. Adjust these example inputs for your application; they are separate from the source test and 3D setup. Motion allowance and target coverage are starting points to validate, not acceptance limits. Pixel count starts from the proposed camera's catalog resolution.
Enter finite numbers in every field. Field width, feature width, target coverage, exposure and allowed motion must be greater than zero; horizontal pixel count must be a positive whole number; material speed may be zero. Use values within the supported numeric range if a calculation cannot be represented.
Object sampling mm/px
Pixels across feature px
Horizontal pixels for target px
Motion during exposure px
Exposure ceiling from motion µs
Formulas and assumptions
The field, feature, speed and exposure start with neutral example values. They are not taken from the source test or the 3D illustration. Allowed motion starts at an editable 0.5-pixel example; it is not a recommended acceptance limit. Target coverage starts at an editable 5-pixel example; it is not a recommended detection or measurement threshold. The horizontal pixel count starts from the catalog Resolution row for MV-CS050-10GM(NPOE). Use the effective width after cropping, binning or decimation if those modes are enabled.
- Object sampling (mm/px) = field width (mm) / horizontal pixels.
- Pixels across feature = feature width (mm) / object sampling (mm/px).
- Horizontal pixels for target = field width (mm) × target pixels across feature / feature width (mm), rounded up to a whole pixel.
- Motion (px) = speed (mm/s) × exposure (µs) / 1,000,000 / object sampling (mm/px).
- Exposure for allowed motion (µs) = allowed motion (px) × object sampling (mm/px) / speed (mm/s) × 1,000,000.
The exposure result is the maximum duration from this motion allowance alone. At zero speed, motion sets no exposure limit; the camera, lighting, saturation and other constraints still apply. A shorter exposure does not itself guarantee a reliable inspection.
Field width and feature width refer to the same object plane. The motion calculation assumes uniform linear motion parallel to the field-width direction and a single exposure. It does not model perspective, vibration, rolling-shutter distortion, diffraction, defocus or optical distortion. A strobe may change the effective exposure.
The target result is a horizontal sampling requirement, not a camera recommendation or a change to the selected camera. It uses the effective image width after cropping, binning or decimation and does not determine the vertical resolution or sensor size. Pixel coverage alone does not establish detectability or measurement accuracy. Validate contrast, lens performance, working distance, illumination, calibration, camera exposure limits and the inspection algorithm on representative parts. Changing field width does not change the 3D model or certify that the proposed lens can achieve that field.
The set-up and the parts
| 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 |
IlluminazioneOur pickLS-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 timingConfiguration to confirmIn proposed setupCameraOur pickMV-CS050-10GM(NPOE)
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.
$819.00In proposed setupObiettivoOur pickLS-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.
$339.00In proposed setupCamera test stationOur pickLS-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.
$359.00In proposed setupCustom configuration requirements stay attached to this quote. The configurator starts with the standard parts; confirm the custom lights with your quote.
"Tested" identifies the part named in the source. "Our pick" is a proposed alternative or supporting part. The quote includes only cards marked "In proposed setup", with the quantities shown; other test arrangements are separate. Confirm colour, optics, controllers, power supplies, cables and mounting before ordering.
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.
More case studies
Lithium battery manufacturing · Surface defect detection
Battery welds and tabs
Control what shiny metal reflects.
- IlluminazioneFlat dome, 100 × 100 mm emitting
- Dimensioni140 × 140 × 11.5 mm
Electronics (SMT / AOI) · Solder joint inspection
PCB solder joints with an RGB AOI light
Use lighting angle to make solder shape visible.
- IlluminazioneAOI, 160 mm outside, 45 mm aperture
- Altezza55 mm
Precision machining · Surface defect detection
Scratches on machined metal
Choose lighting direction before adding resolution.
- Test lightFour-sided adjustable bar light
- Housing (spec)230 × 230 × 37 mm
Start with your inspection requirement
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.
Discuss your applicationConfiguri un sistema