Machine Vision Knowledge Base
Knowledge
How to Choose a Zoom Lens + APO Objective: 5-Step Checklist
Select a zoom lens + APO objective in 5 steps: set NA from feature size, size FOV, match the TV tube, check low-mag vignetting, request verified data.
Motorized Zoom + APO for Semiconductor Wafer Inspection
Motorized zoom plus APO objectives for semiconductor and wafer inspection: a 12.5X body with a 10x APO gives a computed 5.8x-75x, 1 um range.
Matching Camera Sensor to Zoom Lens Image Circle: 1/3–1 Inch
Camera sensor to zoom lens image circle matching: 1x, 1.5x, 2x tube rules, why 1/3-inch sensors never flag vignetting, and the 72.5% field limit.
Zoom Lens Total Magnification & FOV Calculator: Worked Examples (2X–50X)
Calculate total magnification and field of view for zoom lens + APO objective setups. Worked examples from 1.4X to 75X, FOV down to 0.12 mm.
APO vs Plan Achromatic vs Achromatic Objectives: Which Does Your Inspection Need?
APO vs plan achromatic vs achromatic objectives: what each correction class fixes, MPO NA 0.055-0.42 and WD 20.5-45 mm, plus a resolution reverse lookup.
Why Do Corners Go Dark at Low Magnification? Vignetting in Zoom Lens Systems Explained
Why do corners go dark at low magnification? Vignetting in zoom lens systems explained: the field measured just 72.5% of the sensor width, corners at 0.
Zoom Lens with APO Objectives: Magnification, Vignetting and Industrial Applications
How a zoom lens works with 2X-50X APO objectives: total magnification and FOV calculations, why vignetting appears at the low-magnification end, and how to choose a combination for semiconductor, PCB and precision inspection.
Motorized Zoom Lens Guide: Selection, Control and Integration
A motorized zoom lens changes magnification under software control. Compare the four families, fix six numbers before requesting a quote, and review published models plus the RS-232, SDK and AI control paths.
6.5X Zoom Lens Selection Guide for Machine Vision
How to choose a 6.5X zoom lens for machine vision: magnification range, working distance, control method, optical quality and integration - with POMEAS LZ model specifications.
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