Nikon CFI Plan Apo Lambda D 40x Objective (NA 0.95, Infinity)

The Nikon CFI Plan Apo Lambda D 40× is part of Nikon’s Lambda D objective series — a line specifically engineered for the demands of modern digital microscopy. The Lambda D designation indicates optimization for reduced focus shift across wavelengths, ensuring that fluorescence channels remain parfocal when switching between excitation wavelengths — a critical requirement for multi-color widefield and confocal imaging where z-drift between channels would compromise co-localization accuracy and 3D reconstruction quality. At NA 0.95, this is the highest NA available in a dry 40× objective, providing resolution and light collection approaching that of lower-NA immersion objectives without the need for immersion media — making it ideal for high-throughput screening, slide scanning, and any workflow where the convenience of a dry objective is preferred without sacrificing optical performance. The plan apochromat correction ensures accurate chromatic registration across all fluorescence channels. Compatible with Nikon CFI series microscopes including Eclipse Ti2, Ti, Ni, E, and FN series. Supplied new from stock, catalog number MRD70470.