At 9000 m person detection with a 290 mm F1.7 ABF lens, the XHM2290C-ABF provides an ultra-long-range passive OEM optical core for custom maritime and border surveillance platform integration.
Demand for passive long-range optical detection at ranges historically reserved for radar and thermal imaging has grown significantly across coastal and border surveillance programmes that have encountered thermal sensor export restrictions or procurement delays exceeding twelve months. That demand has redirected engineering effort toward high-aperture electro-optical modules capable of achieving 9000 m-class person detection in a passive configuration, without the controlled-goods licensing that limits thermal sensor procurement in several active programme regions. Starlight-class CMOS sensor technology operating behind F1.7 or faster telephoto lenses has made that performance level achievable in a COTS module form factor for the first time.
Ultra-Long-Range OEM Optical Core for Custom Platform Integration
The XHM2290C-ABF provides that capability as a bare integration module, pairing a 290 mm F1.7 auto-back-focus telephoto lens with a starlight-class CMOS sensor rated to 0.001 lux at 5 fps. Person detection is rated to 9000 m and vehicle detection to 18000 m under standard test conditions, establishing the module as one of the longest-range passive EO cores available to integrators working outside the thermal imaging supply chain. The bare-module format allows system integrators to design the mechanical housing, environmental sealing, pan-tilt interface, and power architecture to the specific requirements of their installation, rather than adapting a complete camera system to a non-standard site envelope.
Maritime Chokepoint and Coastal Observation Applications
Fixed observation posts covering maritime chokepoints, strait approaches, and island perimeters require detection geometry that identifies surface contacts well before they enter the enforcement engagement envelope. At 9000 m rated person detection range, the XHM2290C-ABF provides the optical core to deliver that early-warning geometry from a single fixed mount, in passive mode that avoids radar or laser emissions that would reveal sensor position to approaching vessels. Integrators building coastal observation platforms have used the 290 mm ABF module format to develop installations inside existing lighthouse structures, hilltop communication masts, and cliff-mounted enclosures where standard camera housings cannot be accommodated without civil engineering modification.
ABF Requirement at 290 mm and Operational Uptime
The auto-back-focus mechanism becomes critical to sustained operational performance at 290 mm focal length, where thermal focus drift between a cold overnight minimum and a warm afternoon maximum can shift the focal plane by enough to reduce effective detection range by 30 percent or more without correction. Fixed installations that cannot be serviced more frequently than once per quarter rely on ABF compensation to maintain detection performance across seasonal temperature cycles. The XHM2290C-ABF addresses that operational requirement directly, making it the appropriate optical core for programmes specifying 9000 m passive detection with a multi-year unattended service interval as a combined procurement requirement.