Machine Vision Knowledge Base: Lens Selection and Application Guides
Knowledge
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.
Panel-Level Packaging Metrology: Line Scan, WLI and Film Thickness | POMEAS
Panel-level packaging needs three measurements: 2D line scan, 3D white-light interferometry and 1D film thickness. Which tolerance belongs to which channel.
One-Shot Multi-Dimension Measurement: What 100 Items in a Single Capture Really Means
Online heads can evaluate up to 100 dimensions from one capture. What that claim includes, what it excludes, and where the accuracy differs per item.
Putting an Online Gauge on the Line: Integration, Data and Sorting
What putting an online gauge on a production line actually involves: triggering, data output, sorting logic and the interface questions to confirm with the vendor.
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