India’s Zen Technologies has developed an optical filter that could make military laser training systems more precise, durable, and low-maintenance.
The new “Single ILU Long Pass Filter” combines visible and infrared laser beams into one stable output, marking a shift from traditional setups that use separate beams and often struggle with alignment issues.
In laser-based combat training, visible beams help instructors monitor a trainee’s aim while infrared beams simulate actual firing, typically requiring two separate systems.
Zen’s filter merges both functions into a single beam path, cutting down on complexity, improving alignment, and reducing the need for constant recalibration.
That makes the system more reliable in outdoor training environments, where bulky, fragile components are more likely to be a liability.
According to the company, the breakthrough “enhances the accuracy, realism, and responsiveness of combat training simulators.”
With its modular build and compact form, the filter supports mobile and export-friendly trainer setups, not just full-scale simulators.
The tech was recently granted an Indian patent, marking a milestone in Zen’s push to modernize military training through homegrown innovation.
