Motorized zoom lens systems designed to be integrated into custom optical instruments and operated remotely. Lenses are paired with 4 axis custom motion controllers.


Lens name Zoom ratio Focal length, mm Image circle, mm
L084 40x 6.3 ~ 252 9.2
L085 25x 5.3 ~ 130 6.8
L086 18x 6.8 ~ 120 9.2
L116 (TBD) 5x 10.5 ~ 47 9.2
L117 32x 6.5 ~ 212 9.2
L119 (TBD) 16x 16.8 ~ 269 20.8
L120 28x 6.7 ~ 190 9.3


Detailed SCE2-M controller documentation is located here. Information and examples below explains how to use lens functions.


In order to function properly, controller has to be configured. There are many things that should be adjusted: max motor speed, direction, homing parameters, motor acceleration, motor steps per mm calibration and more. Mostly suitable parameter table is maintained along with source code on SCE2-SDK repository on GitHub. Most parameters can be updated during normal operation, but controller restart might be required. Motors are calibrated to match g-code travel value with physical motor travel length in mm.

Firmware has 2 startup command lines that are executed during power on sequence. Any G-code command can be used. However for smaller motors we recommend setting lower so motors will not overheat.


Iris (also known as aperture) is responsible for:

New lenses have 2 types of iris mechanisms;

Due to construction topology DC-Iris is always closed after controller is reset


Two interpretations of homing are used in lenses and controllers.

If standard firmware detects that limit switch is actuated it decides that it is dangerous situation and motors should be powered down. While for CNC this behavior is perfect it is not acceptable for lens control. It is pretty easy to configure controller to operate normally when limit switch is actuated. However if limit switch is already actuated homing procedure will fail. This functionality should be fixed in upcoming firmware updates. Meanwhile prior to homing procedure axes should be moved away from limit switches manually before performing homing procedure.


Source code of development kit is maintained on GitHub.

Lens Tester GUI


Console demo


Revision #9
Created 22 January 2022 17:19:16 by Saulius
Updated 18 July 2023 05:25:40 by Saulius