The CLS-F50-3P is a near-infrared microscope scanning lens with an operating wavelength range of 800–1800 nm and an effective focal length of 50 mm, specifically optimized for high‑performance three‑photon laser scanning microscopy. It delivers excellent diffraction‑limited performance across the NIR band, ensuring high concentration of laser focal energy for bright, clear, high‑resolution imaging. The anti‑reflection coating is specially designed for high‑power NIR lasers, offering a high laser damage threshold and enhanced reliability. The lens features a standard M30.5×0.5 external thread for easy installation. When used with our TTL200MP2 standard tube lens, it forms an object‑space telecentric system, effectively eliminating vignetting at the field edge and ensuring uniform imaging across the entire field of view.

Key Features & Benefits:  

Superior NIR Performance:   Optimized for the 800-1800 nm window, which is critical for three-photon excitation (e.g., ~1300nm & ~1700nm).

Diffraction-Limited Imaging:   Maintains spot size at the theoretical diffraction limit across the entire field of view, guaranteeing maximum resolution and signal intensity.

High Laser Damage Threshold:   Features proprietary anti-reflection (AR) coatings specifically designed for high-power NIR lasers, ensuring reliability and longevity.

Object-Side Telecentricity:   When paired with a compatible tube lens like our TTL200MP2, it creates an object-side telecentric system. This eliminates vignetting and maintains a consistent chief ray angle across the FOV, which is crucial for uniform illumination and precise galvo scanning.

Standard Mount:   M30.5 x 0.5 external thread for easy and secure integration into most microscope setups.

Ideal as the primary scan lens in   three-photon microscopy   systems.

Also suitable for other   multiphoton microscopy   (e.g., two-photon) and   NIR laser scanning   applications requiring high power throughput and large FOVs.

For optimal telecentric performance, pair with a matched tube lens .