Repeated label codes: keep modules and margins visible across the sheet
The real capture shows a sheet of repeated small two-dimensional marks and adjacent identifiers. White bar illumination provides a starting point for checking code modules across the field, while the code type and read performance remain to be verified.
Choose how many labels fit the field from the smallest code module, not the sheet size.
Real camera capture
- Light in sourceLS-2BS14738-RGBW · white
- EvidenceReal application-lab image
- Imaging kitCamera, lens and fixture proposed
- AcceptanceValidate on representative parts
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
Small codes at different sheet positions can have different focus and module contrast.
A camera view that contains many labels may leave too few pixels across the smallest code feature.
How it was solved
The source identifies the white bar and calls the application QR-code inspection. The visible mark type is not independently verified here, so this study refers to two-dimensional codes.
Determine the actual symbology, module size and required code margins on your labels before deciding how many labels one camera should inspect.
Why it works
- 1
A repeatable reflected-light recipe can preserve the dark/light module pattern and nearby text across a sheet.
- 2
One visible array does not establish a successful decode, payload identity or verifier grade.
Lighting application-lab catalog capture
Evidence you can inspect
Repeated two-dimensional marks and adjacent printed identifiers are visible across the supplied image.
The catalog captions the example QR-code inspection and identifies a white 147 mm bar.
The exact symbology, payloads, minimum module size, code grades and decode results are not provided. No code is decoded for this page.
From image contrast to a production decision
What to validate on your part
- 01
Identify the code requirement
Confirm symbology, payload format, quiet-region requirements and any needed verification standard.
- 02
Test sheet corners and centre
Check module sampling, focus and contrast at every planned label position.
- 03
Use difficult print examples
Include missing modules, blur, low contrast and damaged labels in a blinded reader test.
From the demo to your test bench
Parts in this setup
LightTested
LS-2BS14738-RGBW
147 x 32 mm Bar light (LS-2BS14738-RGBW)
White 147 × 38 × 27 mm bar named in the source code-inspection example; the printed emitting width is 32 mm. One source light model is identified, but its angle and quantity are not documented.
$109.00
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 proposed for a contrast trial. Confirm field, sampling, exposure and algorithm on the actual application.
$819.00
In proposed setup
LensOur pick
LS-KF1628M-ML
16mm, F2.8, 1.1", C-mount, Macro lens (52 mm (-0.25X) to 546 mm (-0.03X)) (LS-KF1628M-ML)
Proposed 16 mm C-mount macro lens at its printed 0.1x magnification / 152 mm working-distance pair. The proposed 2448 × 2048 sensor with 3.45 µm pixels gives a derived 84.456 × 70.656 mm field; confirm focus, coverage and residual distortion on the real sample.
$319.00
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
| Tested light | LS-2BS14738-RGBW, white |
|---|---|
| Source camera / lens | Not specified in the source image caption; proposed parts below |
| Proposed lens point | 0.1x at 152 mm, printed lens pair |
| Derived proposed field | 84.456 × 70.656 mm = sensor dimensions / 0.1x; not a source test field |
| Bar housing (printed) | 147 × 38 × 27 mm |
| Mounting (proposed) | LS-BT-XZ-G-6-6045; 600 mm column, 600 × 450 mm base, glass tray and two included 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. Representative part geometry is illustrative, not reconstructed inspection evidence. The specimen and lighting angle are representative, not dimensions or settings recovered 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.