Moulded bottle bases: read the cavity code under a dome light
The source image shows the base of a moulded bottle under a white dome light: a five-point star in the centre, a ring of curved moulded marks and a raised two-character code. The code stands out from the surrounding moulded relief.
Diffuse dome light evens out the curved base so the moulded code can be read.
Manufacturer test image
- Light in sourceLS-DOM-0094 · white
- EvidenceManufacturer test image
- Imaging kitCamera, lens and fixture proposed
- AcceptanceValidate on representative 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. The specimen and lighting distance are representative, not dimensions or settings recovered from the source capture.
Lighting manufacturer's catalog test image
What the camera saw
Images from the manufacturer's application test, cropped; the original annotations are kept and nothing is generated or enhanced. Drag a comparison slider, or open any image full size.
The challenge
A cavity code moulded into a bottle base identifies the mould that made it, but it has the same colour as the base and is surrounded by other relief.
The curved, glossy base sends hot spots back to the camera under direct light.
How it was solved
The source identifies the white dome light with a 138 mm luminous size for reading characters on the bottom of a bottle.
Use the proposed monochrome camera through the dome's 30 mm camera hole, then locate and read the code against known cavity codes. The source does not name its camera, lens or software.
Why it works
- 1
A dome surrounds the part with diffuse light from many directions, which evens out the reflections from the curved glossy base.
- 2
Raised relief still changes the light slightly at its edges, which outlines the characters without a hard shadow.
Lighting manufacturer's catalog test image
Evidence you can inspect
A raised two-character code, a central star and a ring of curved moulded marks are visible on the base.
The source captions the example as inspecting the characters at the bottom of a bottle and identifies the white dome light.
One source capture. No base size, code set, read rate or bottle material is supplied.
From image contrast to a production decision
What to validate on your part
- 01
Use every cavity code
Collect bases from each mould cavity, including worn and faint codes.
- 02
Check code position
Confirm the code is found at every rotation of the bottle.
- 03
Measure reader outcomes
Record correct reads, no-reads and wrong reads on a separate labelled set.
From the demo to your test bench
Parts in this setup
LightTested
LS-DOM-0094
138 mm Dome light source (LS-DOM-0094)
White version of the dome light identified in the source bottle-base example. Printed 138 mm luminous size, 198 mm overall diameter, 30 mm camera hole and 96.5 mm height. The catalog lists red, green, blue and white variants; this trial selects white.
$839.00
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.Not available in the United States. Available for delivery to other countries.
$819.00
In proposed setup
LensOur pick
LS-FFL-1454
16 mm, F2.8, 1.1", C-mount, Macro lens (52 mm (-0.25X) to 546 mm (-0.03X)) (LS-FFL-1454)
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-MNT-0097
Camera stand with XZ adjustment and glass tray, height 600 mm, 600 x 450 mm base (LS-MNT-0097)
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.
$1,309.00
In proposed setup
"Tested" marks the part the manufacturer used in its application test. "Our pick" is our proposed alternative or supporting part, not tested by the manufacturer in this set-up. Confirm colour, optics, controllers, power supplies, cables and mounting before ordering.
The set-up
| Tested light | LS-DOM-0094, 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 |
| Dome envelope (printed) | OD 198 mm × H 96.5 mm; 30 mm camera hole |
| Luminous size (printed) | 138 mm |
| Mounting (proposed) | LS-MNT-0097; 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 distance are representative, not dimensions or settings recovered from the source capture.
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Make the next trial specific.
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About this case study: the photos and camera images are the manufacturer's application test images, supplied by the maker of the tested part and taken on the parts shown; LumaSpec did not run this test. Your results depend on your part, camera and set-up. This is a manufacturer's application study, not a LumaSpec customer deployment. Reported figures are the manufacturer's; proposed components require a fresh trial. The 3D scene illustrates the arrangement and does not simulate imaging performance.