Image Dimension Measurement System: IMAGE 3 Series Selection Guide

An image dimension measurement system captures a part image once and derives multiple dimensions - length, width, diameter, angle, position and profile - from that image, so a full inspection runs in seconds instead of the minutes a manual method needs. The POMEAS IMAGE 3 series is an image dimension measurement system built around telecentric optics, monochrome CMOS cameras and one-key measurement software: place the part, run the program, output the report. This guide summarizes the series specification and how to choose a model.

How an Image Dimension Measurement System Works

The instrument illuminates the workpiece with a controlled light (ring, backlight or coaxial), images it through a telecentric lens onto a high-resolution CMOS sensor, and the AI-Image measurement software detects edges and fits geometric features against the program. Because telecentric optics keep magnification constant over the depth of field, small part-height variation does not skew the measurement scale. The minimum display unit across the series is 0.1 μm, and results can be output as one-key reports for quality records.

IMAGE 3 Series Model Comparison

Figures per the POMEAS IMAGE 3 specification table (product page, checked 2026-11-03):

Camera options are 20 MP or 12 MP monochrome CMOS; the MAX and MAX2 single-frame field of view is 6 × 6 mm to 25 × 25 mm class for small high-precision parts. The full product page is the IMAGE 3 instant vision measuring system.

How to Choose a Model

Three inputs decide the model. First, the largest part envelope in the part family: up to Ø100 mm in the lens field of view the base IMAGE 3 works without an XY stage; beyond that, PLUS and PRO add motorized ranges up to 300 × 200 mm. Second, the tightest tolerance: MAX and MAX2 carry ±0.25 μm precision-mode repeatability where the base series is ±0.5 μm. Third, whether height matters: only the MAX line adds the optional 8055 spectral confocal height sensor. For the underlying method and trade-offs, see the flash measurement machine selection guide.

Where It Fits in the Inspection Toolkit

• Batch QC of small precision parts - washers, shims, connectors, machined inserts; one program covers many dimensions. Background: what a flash measuring machine is.
• Comparison with manual/VMM workflows - cycle and accuracy trade-offs are quantified in one-press image measurement vs conventional VMM.
• Height-critical parts - steps and topography via the confocal option; see flash measurement height measurement.
• Industry examples - connector inspection and injection-molded or medical parts are covered in flash measurement for connectors and flash measurement for medical parts.

Frequently Asked Questions

What is an image dimension measurement system?

It is an optical instrument that images a part once and derives many dimensions from that image - length, width, diameter, angle, position and profile - using telecentric optics and edge-detection software. The POMEAS IMAGE 3 series performs this with one-key measurement and one-key report output.

Which IMAGE 3 model has the highest precision?

IMAGE 3 MAX and MAX2, with ±0.25 μm precision-mode repeatability versus ±0.5 μm on the other models, per the specification table. They also add the optional 8055 spectral confocal height sensor.

What measuring range does the series cover?

The base IMAGE 3 works within an 18 × 18 mm field of view (or Ø100 mm in wide-field mode) without an XY stage. IMAGE 3 PLUS extends to 200 × 200 mm and PRO to 300 × 200 mm in wide-field mode, with Z travel to 75 mm.

Can it measure part height as well as XY dimensions?

Yes on the MAX line: the optional 8055 spectral confocal sensor (WD 55 mm, range ±3 mm) adds height measurement. The IMAGE 3, PLUS and PRO models are XY-only instruments.

Request a Model Recommendation

Send your part drawing, the tightest tolerance and batch size to POMEAS for a model recommendation and sample measurement on your own parts.