Nikon CFI Plan Apo Lambda S 40XC Silicone Immersion Objective

The Nikon CFI Plan Apo Lambda S 40XC is a premium silicone immersion objective engineered specifically for deep tissue imaging and 3D cell culture applications at mid-high magnification. As part of Nikon's Lambda S series, this objective combines apochromatic correction with silicone immersion technology, delivering exceptional optical performance for imaging thick specimens at depth. The silicone immersion medium (refractive index ~1.40) closely matches the refractive index of biological specimens, dramatically reducing spherical aberration when imaging deep into thick samples compared to oil or water immersion. With a high numerical aperture of 1.25, this objective provides outstanding resolution and light-gathering efficiency for detailed cellular imaging in thick specimens. The Lambda S designation signifies Nikon's advanced optical design optimized for extended spectral range and superior flatness of field. The 0.3mm working distance provides adequate clearance for imaging into thick specimens, while the integrated correction collar (C designation) allows precise compensation for coverglass thickness variations (0.13–0.21mm). Compatible with Nikon's CFI infinity optical system, this objective integrates seamlessly with Eclipse Ti2, Ni-E, and A1 series research microscopes, making it ideal for laboratories conducting 3D cell culture imaging, organoid research, thick tissue imaging, and live cell observation in thick specimens. This objective is in new condition.