The Excelitas Technologies pco.edge 3.1 is a scientific CMOS camera that bridges the gap between high-sensitivity scientific imaging and industrial machine vision. Its 3.1-megapixel sensor with 6.5 µm pixel pitch achieves a median readout noise of just 1.1 electrons in rolling-shutter mode and 2.7 electrons in global-shutter mode, with a dynamic range exceeding 27,000:1 — capturing both faint signals and bright reflections in a single frame without saturation.

Why does global shutter matter for 3D metrology?

In laser triangulation and structured-light 3D scanning, any motion during exposure — whether from a moving conveyor, a vibrating production line, or a scanning laser line — creates geometric errors in the reconstructed point cloud. The global-shutter mode exposes all 2048×1536 pixels simultaneously, freezing motion at up to 50 fps without the spatial skew inherent to rolling-shutter readout. Global Reset mode offers a middle ground: simultaneous exposure start with rolling readout, useful when the full 27,000:1 dynamic range is needed with minimal motion artifact.

How does Peltier cooling improve measurement repeatability?

The sensor is Peltier-cooled and stabilized to +5°C (at up to 27°C ambient), reducing dark current below 0.5 electrons per pixel per second. This thermal stability ensures that pixel response and dark-current offset remain constant across long measurement runs, critical for industrial quality-control applications where frame-to-frame consistency directly impacts pass/fail decisions. Photo-response non-uniformity is specified below 0.2%, and non-linearity below 0.6%, preserving measurement linearity across the full 16-bit digitization range.