The Cold Harbour CHAD (Cold Harbour Aperture Defender) is a lens protection accessory designed for night-vision devices that use PVS-14–style optics. It features a screw-in, adjustable iris aperture that improves depth of field, allowing users to view objects at varying distances with enhanced clarity and focus without the need to refocus the objective lens. The CHAD also provides added lens protection during use and handling.
The Cold Harbour CHAD (Cold Harbour Aperture Defender) is a lens protection accessory designed for night-vision devices that use PVS-14–style optics. It features a screw-in, adjustable iris aperture that improves depth of field, allowing users to view objects at varying distances with enhanced clarity and focus without the need to refocus the objective lens. The CHAD also provides added lens protection during use and handling.