MV-CA050-12GCView part & specifications →Browse camera options →首页 / Case studies / Contamination in blister packs
Application study · Pharmaceutical packagingCapsule contamination in clear blister packs: reducing curved-surface glare
Clear blister domes act like a row of curved mirrors. An arch-shaped shadowless light lights them from every side at once, so the domes stop glaring and a tiny black speck on a capsule stands out.
Reduce glare before searching for a dark speck.
- 光源Arch shadowless, 125 × 70 mm emitting
- 工作距离5–50 mm (light spec)
- Viewport45 mm camera hole
- ResultDirt clear, even background
Test stationIncluded light holders相机镜头光源Part视场
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-CA050-12GC
5 MP 2/3" colour, so capsule colour can be checked in the same image.
Proposed component
LS-KF1628M-ML
16 mm macro lens; a 100 mm pack on a 2/3" sensor needs about 0.085x.
Tested component
LS-DL12570
Arch shadowless light, 125 × 70 mm emitting, 139 × 112 × 62 mm, 45 mm camera viewport.
Proposed component
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.
Inspect the real capture
Follow the contrast to the part.
Reduce glare before searching for a dark speck.
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.
From the demo to your test bench相机MV-CA050-12GCView part & specifications →Browse camera options → Imaging lens
LS-KF1628M-MLView part & specifications →Browse imaging lens options → Inspection light
LS-DL12570View 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-CA050-12GCView part & specifications →Browse camera options →LS-KF1628M-MLView part & specifications →Browse imaging lens options →LS-DL12570View 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 supplied camera image shows a dark mark on a capsule under diffuse arch illumination.
What the source reports
The source identifies the white arch light and describes visibility of the dirty region; no defect size is stated.
How to use this evidence
An optical contrast trial. It does not establish pharmaceutical process validation or a contamination detection limit.
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
Each blister dome reflects a bright highlight from any small light. Highlights hide what is under them and can be mistaken for defects.
The defect is small and dark on a two-tone capsule, so the light must be even over the whole pack.
How it was solved
The LS-DL12570 arch light curves over the pack along the conveyor and sends light down from every angle across the web. The domes reflect the evenly lit arch instead of a hot spot.
The supplied capture shows the capsules against a dark background, with a dark mark visible on a light capsule surface. It demonstrates useful contrast, without establishing contamination size or a production acceptance threshold.
Why it works
- 1
Diffuse light from a wide arc removes glare from curved, glossy packaging.
- 2
The open ends of the arch let the web pass through, so it fits inline on a blister machine.
- 3
The 45 mm viewport keeps the camera on axis without a beam splitter.
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
Cover packaging variation
Test dome shape, foil finish, wrinkles and position variation.
- 02
Use known defects
Include the smallest required speck and contaminants on both capsule colours.
- 03
Measure false calls
Run acceptable packs at the intended speed and check reflections against the rejection rule.
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-CA050-12GC. 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
| 光源 | Arch shadowless light (LS-DL12570), white 6600 K |
|---|---|
| 工作距离 | 5–50 mm (light spec) |
| 相机 | Area scan through the 45 mm viewport |
| Mounting (proposed) | LS-BT-XZ-G-6-6045 · camera test station with glass tray and two lighting holders |
光源TestedLS-DL12570
Arch shadowless light, 125 × 70 mm emitting, 139 × 112 × 62 mm, 45 mm camera viewport.
$279.00In proposed setup相机Our pickMV-CA050-12GC
5 MP 2/3" colour, so capsule colour can be checked in the same image.
$679.00In proposed setup镜头Our pickLS-KF1628M-ML
16 mm macro lens; a 100 mm pack on a 2/3" sensor needs about 0.085x.
$319.00In proposed setupCamera test stationOur pickLS-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.
$359.00In proposed setup"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.
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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 application配置系统