Machine Vision Knowledge Base
Knowledge
12.5X Zoom Lens for Optical Encoder Disc Inspection
A 512 P/R metal encoder disc inspected with a 12.5X zoom lens and a 2 MP camera: real fields on a 1/2-inch sensor, illumination choices and what the images prove.
14X Zoom Lens for Laser Decapsulation: Die Imaging Case
How a 14X continuous zoom lens and a 12 MP camera image a chip during laser decapsulation, and what an inclined axis does to focus and depth of field.
Diffuse vs Collimated Backlight for Dimensional Measurement
The difference between diffuse and collimated backlight is not brightness but edge position: t·tanα decides whether a measured diameter drifts with part thickness.
Lighting for Metal Surface Scratches: Dark Field Without Guesswork
Why bright field hides scratches on machined metal, how low-angle dark field makes them visible, and how to set angle, azimuth and surface roughness limits before promising a detection rate.
PCB AOI Lighting: Coaxial, Low-Angle and RGB in One Cell
Three optical problems on one PCB — pad reflectance, solder topography and silkscreen colour — need three different illuminations. How to combine them without wasting frames.
Motorized Zoom Lens for PCB Inspection: Selection and Integration | POMEAS
How to select and integrate a motorized zoom lens on a PCB inspection line: magnification-to-feature matching, RS-232 program positions, and where fixed optics fit.
Optical Surface Profiler Guide: WLI vs Point Confocal vs Focus Variation | POMEAS
Optical surface profiler guide: WLI vs point confocal vs focus variation, PSI/VSI mode selection and WLI100 specs for 3D topography and roughness.
PCB AOI Lens Upgrade: 17.3 mm to 12 mm or 8 mm FOV
Keep your AOI camera and light, shrink the field of view from 17.3 x 17.3 mm to 12 x 12 or 8 x 8 mm. The magnification maths, lens routes and WD cost.
Optical Metrology OEM Modules: Design-to-Production Verification Checklist
A six-gate qualification path for optical metrology modules, from optical feasibility to change control, with the specification fields that actually transfer.
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