Theon ClipIR Thermal Clip-On Thermal Module for Day Sight Conversion to Dual-Channel Day-Night System

The Theon ClipIR Thermal is the clip-on thermal module designed for the precision shooter, forward observer, and sniper who have invested in a high-quality optical scope — Nightforce, Schmidt & Bender, Leupold Mark 5HD — and who need nocturnal capability without replacing the day sight they have mastered and trust for precision shooting in light conditions, via a module that mounts in seconds in front of the ocular without touching the weapon, mounts, or zero adjustment.

The uncooled vanadium oxide (VOx) 640×480 pixel detector with 12 μm pitch and 35 mK (millikelvin) NETD thermal sensitivity detects 0.035°C temperature differences between target and background, sufficient to distinguish a person against a vegetation background at ambient temperature or against snow in Andean winter conditions where the temperature difference between human body and environment can reduce to 2-3°C with high-quality thermal camouflage clothing. The 35 mm F/1.0 aperture focal provides 18.5° horizontal field of view (sufficient for area search) with STANAG-calibrated detection range of 1800 meters on person target and 3500 meters on vehicle.

The clip-on mount positions the module in front of the weapon optical scope objective — not the ocular, as previous-generation systems — via 50 mm tube clamp (compatible with 40-56 mm objectives via included adapters), aligning the thermal module optical axis with the scope optical axis to ±0.1 milliradian precision (equivalent to ±5 cm at 500 meters) without needing to recalibrate the weapon zero. The shooter observes the thermal image projected in the optical scope ocular through the same reticle and elevation/windage adjustment system used in daytime conditions, without changing any of their shooting procedures.