Machine Vision Knowledge Base: Lens Selection and Application Guides
Knowledge
Zoom Lens for Medical Device Inspection: Selection Rules | POMEAS
Four optical requirements decide the lens for medical components, plus the cleanroom and record constraints that eliminate otherwise suitable options.
Transparent and Coated Surfaces: Zoom Lens Setup | POMEAS
Transparent parts fail on contrast, not resolution. Two-surface ghosting, depth of field, and which illumination makes an edge visible at all.
Single-Motor vs Dual-Motor Zoom Lens: How to Choose | POMEAS
One motor drives magnification, two drive magnification and focus. What the second axis buys in changeover time, and why it still is not autofocus.
Autofocus vs Motorized Zoom Lens: What Each Solves | POMEAS
Zoom, focus motor and closed-loop autofocus are three different things. Which one fixes which problem, and where image-based autofocus fails outright.
Build a Multi-Magnification Inspection System | POMEAS
Three architectures for multi-magnification inspection and how each one fails. Six design steps with real DOF, NA and FOV data from 0.58X to 7.5X.
Manual Zoom Lens for Semiconductor Observation | POMEAS
Engineering observation is not production inspection. What a 14X zoom lens delivers on a die, why 2.80 um is the limit, and what 2000X does not mean.
Manual Zoom Lens for Precision Component Inspection | POMEAS
Size a manual zoom lens from the part: wide view sets maximum magnification, smallest feature sets minimum. Five part classes with worked FOV and sampling numbers.
PCB Repair Station: Zoom Lens vs Stereo Microscope | POMEAS
A repair bench needs working distance and depth of field, not magnification. Where a stereo microscope still wins, where a C-mount zoom lens does, and the FOV arithmetic.
600 x 600 mm AOI: Field-of-View Budget and Stitch Count | POMEAS
A 600 x 600 mm AOI panel takes 1,156 fields at a 20 mm field and 196 at 50 mm. The stitch-count arithmetic behind panel-level takt time.
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