Ophir IR Optics 2026 Catalog

FoldIR 25-275mm f/5.5, Motorized Continuous Zoom 680520 Property Value Optical WFOV NFOV Focal Length 25mm 275mm F# 5.5 Average transmission (3.4-4.2μm) 85% (HD) Cold stop to FPA Distance 19.4mm Cold Stop CA Ø3.6mm Back Focal Length 23.37mm in air Minimum Focusing Range 50m 5m Nuc (by defocus) Yes Mechanical Focus Mechanism Motorized Focus Time (minimum range to ∞) ≤8 sec. Zoom mechanism Motorized Zoom Time (NFOV to WFOV) <5 sec. Max. Dimensions Ø60 x 96 x 84.2mm Weight 302gr NEW NFOV (275mm) HFOV 640x512 15µ 2.0° WFOV (25mm) HFOV 640x512 15μ 23.4° MWIR | ZOOM 110 For latest updates please visit our website: www.ophiropt.com/infrared-optics 01-2026