Mitutoyo M Plan Apo NIR 5x Objective (NA 0.14, WD 37.5mm, Infinity, M26)

The Mitutoyo M Plan Apo NIR 5× is a wide-area survey objective from Mitutoyo’s M Plan Apo NIR series — a line specifically engineered for near-infrared imaging and spectroscopy applications where standard visible-optimized objectives are inadequate. The NIR designation indicates that this objective uses optical glass and anti-reflection coatings selected for high transmission across the 400–1000nm+ spectral range, enabling applications including NIR reflectance imaging of silicon wafers (which are transparent at NIR wavelengths), Raman spectroscopy with NIR excitation lasers (785nm, 830nm, 1064nm), NIR laser processing and delivery, and any imaging or spectroscopy application requiring high objective transmission in the near-infrared. The 37.5mm working distance is exceptional, providing ample clearance for specimens in environmental chambers, cryostats, vacuum systems, and laser processing setups, as well as room for beam delivery optics and other components that must coexist with the imaging objective. At 5×, this objective provides a wide field of view for rapid specimen survey and navigation — the ideal starting point in a multi-magnification NIR inspection workflow before stepping up to higher magnification M Plan Apo NIR objectives. The plan apochromat correction ensures flat-field imaging with accurate chromatic registration across the full visible and NIR spectrum. Compatible with Mitutoyo FS series microscopes and other infinity-corrected systems with M26 thread nosepieces. Catalog number 378-822-5.