The ES10ZE from Prior Scientific is an entry-level single-axis focus controller that brings motorized Z-positioning to manual microscopes — a key enabler for extended-depth-of-field imaging, automated Z-stack acquisition, and repeatable focus-position recall in inspection workflows. The controller drives a 2-phase, 1 A-per-phase, 1.8° stepper motor (typically the H122 or H122E focus drive) attached to the microscope's fine-focus shaft via a model-specific adapter sleeve. With 10 nm programmable resolution and a maximum traverse speed of 1,600 µm/s, the ES10ZE covers both sub-micron positioning for high-NA oil-immersion objectives and rapid racking between widely separated focal planes.

How is the ES10ZE integrated into imaging workflows?

The RS232 and USB interfaces use a simple 8-bit, 9600-baud serial protocol (no parity, no handshake) that is supported by leading microscopy imaging software suites for automated Z-stack acquisition, multi-position time-lapse, and tiled image stitching. The controller appears as a standard COM port — no proprietary driver architecture. For manual operation without a computer, the large digipot knob provides smooth, tactile focus adjustment with speed proportional to rotation rate, while dedicated pushbuttons handle Set Zero (establishing a reference position), Move Up/Move Down for rapid coarse refocusing, and speed setting. A digital position readout displays the current Z coordinate. An optional linear optical encoder on the focus drive reduces minimum step size to 50 nm for applications requiring absolute position verification, such as metrology and semiconductor inspection.