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PS3H122R (Leica)


Bolt-On Motorized Focus Drive for Leica Microscopes

Prior's PS3H122R bolt-on motorized focus drive is compatible with manual Leica microscopes. See the product compatibility tab for details. 

The unit clamps directly to the coarse focus knob and assumes control over the fine focus, having sufficient resolution to maintain the step resolution of the manual focus drive it is attached to. 

Installation is simple and does not require the microscope body to be inverted or disassembled. Simply clamp the PS3H122R onto the focus drive and push it onto the fine focus knob. Additionally, some microscopes allow the PS3H122R to be directly coupled to the fine focus drive, enhancing repeatability. 

Compatible with Prior's 3-axis OptiScan® and ProScan® controllers, and single-axis ES10ZE, the PS3H122R represents a simple method of enabling automated Z-stacking, extended focus and autofocus operations on manual microscopes.


    • No twist cable connection
    • 0.002 µm minimum step size ensures microscope fine focus resolution is retained
    • Easy to install, no microscope disassembly required
    • Adaptable to numerous current and older generation Leica microscopes
    • Compatible with Prior OptiScan and ProScan controllers

Specifications as per datasheet. Please see datasheet for details.

Option Manufacturer Compatibility Notes

PS3H122R

+ H968

Leica DMR, DMIR

PS3H122R

+ H2754

Leica DM2500, DM2000

PS3H122R

+ H2581

Leica DM4000, DM5000, DM6000
PS3H122DM4 Leica DM4000, DM5000, DM6000 Direct coupling
PS3H122LS Leica DMLS

PS3H122R

+ H2575

Leica DMi8

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