MV-CS050-10GCView part & specifications →Browse camera options →Accueil / Case studies / UV adhesive presence on circuit boards
Application study · Electronics assemblyPCB adhesive under UV: separate material presence from board texture
The supplied UV board captures show bright material contrast on populated electronics. They support a trial for adhesive presence and spread while keeping component appearance, coating and solder reflections in the test.
Identify what fluoresces before deciding what the bright regions mean.
- Method365 nm UV material contrast
- EvidenceReal application-lab capture
- SetupSource light identified; imaging kit proposed
- AcceptanceValidate on your own parts
Test stationIncluded light holdersCaméraObjectifÉclairagePartChamp de vision
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-CS050-10GC
5 MP colour global-shutter camera for colour and angle-coded contrast; confirm colour processing and exposure in the trial.
Proposed component
LS-KF1628M-ML
Proposed 16 mm C-mount macro lens. The illustration uses its printed 0.1x magnification at 152 mm working distance. The proposed camera sensor gives a derived 84.456 × 70.656 mm field. Confirm field, focus and residual distortion on the actual sample; this is not calibrated measurement accuracy.
Proposed component
LS-BS15030-UV365
150 × 30 × 24 mm 365 nm UV bar with 140 × 25 mm luminous area, proposed in place of the different source bar. Begin with one bar; bracket geometry and direction are illustrative.
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.
Identify what fluoresces before deciding what the bright regions mean.
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.
From the demo to your test benchCaméraMV-CS050-10GCView part & specifications →Browse camera options → Imaging lens
LS-KF1628M-MLView part & specifications →Browse imaging lens options → Inspection light
LS-BS15030-UV365View 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-CS050-10GCView part & specifications →Browse camera options →LS-KF1628M-MLView part & specifications →Browse imaging lens options →LS-BS15030-UV365View 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 catalog capture
Evidence you can inspect
Visible in the images
The first board capture has a blue bright region; the separate ring-lit board has strong bright contrast around components.
What the source reports
The source labels both examples UV adhesive inspection on circuit boards and names their bar and ring lights.
How to use this evidence
No material formulation, camera filter, threshold, acceptable coverage or cure measurement is given.
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 PCB contains coatings, inks, solder and component bodies that may respond differently under UV.
A bright region can be the desired adhesive, a coating or an unrelated reflection unless the material is validated.
How it was solved
The source provides two separate 365 nm examples: one with a UV bar and one with a UV ring. They do not form a controlled comparison on the same board.
The proposed LS-BS15030-UV365 bar differs from the source bar. Start with one illumination direction and confirm whether more coverage is required before adding another unit.
Why it works
- 1
UV-responsive adhesive can become easier to segment from the board when its emitted spectrum and the camera filter are well chosen.
- 2
The images demonstrate material contrast under the source lighting; they do not identify every bright region as adhesive or quantify coverage.
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
Measure material response
Compare adhesive, solder mask, conformal coating, markings and flux residue under the selected UV/filter combination.
- 02
Include placement variation
Use populated boards with acceptable adhesive spread as well as known missing and excess deposits.
- 03
Test obscured areas
Check shadows beneath tall components and at the edge of the required bead region.
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-CS050-10GC. 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
| Éclairage | 365 nm UV material contrast |
|---|---|
| Source evidence | Independent bar-lit and ring-lit board examples |
| Proposed bar envelope | 150 × 30 × 24 mm |
| Camera and lens | Source versions not identified; current proposed parts below |
| 3D spacing | Illustrative, to be confirmed on the sample |
| Derived proposed field | 84.456 × 70.656 mm = sensor dimensions / 0.1x; source field not supplied |
| Mounting (proposed) | LS-BT-XZ-G-6-6045; 600 mm column, 600 × 450 mm base, glass tray and two light holders |
ÉclairageOur pickLS-BS15030-UV365
150 × 30 × 24 mm 365 nm UV bar with 140 × 25 mm luminous area, proposed in place of the different source bar. Begin with one bar; bracket geometry and direction are illustrative.
$109.00In proposed setupCaméraOur pickMV-CS050-10GC
5 MP colour global-shutter camera for colour and angle-coded contrast; confirm colour processing and exposure in the trial.
$739.00In proposed setupObjectifOur pickLS-KF1628M-ML
Proposed 16 mm C-mount macro lens. The illustration uses its printed 0.1x magnification at 152 mm working distance. The proposed camera sensor gives a derived 84.456 × 70.656 mm field. Confirm field, focus and residual distortion on the actual sample; this is not calibrated measurement accuracy.
$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.
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