The Stepper Shutters are based on miniature stepper motors and geared drives, providing reliable low-power performance in a very compact package. The shutter blades retain position in the absence of power. Driven by a simple, two-phase bipolar stepper pulse train, the blades move between physical hard stops, with no homing sequence required.
The Stepper Shutters are designed for long life and high reliability. The controlled speed/motion of the stepper drive minimizes blade stop impact, for long life, low wear, and low noise. The shutters are designed to withstand harsh environmental conditions, including shock, vibration and extreme temperatures typical in transportation and field portable applications.
Blade shape and coatings are optimized for visible and IR imaging applications. The Stepper Shutters are specifically designed to fit restricted space envelopes and low power budgets, particularly in miniaturized night vision cameras and sights.
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