Designed for high-performance imaging in the near-infrared short-wavelength range of 850–1050 nm, the CLS-F18-BB scan lens features an effective focal length of 18 mm, an entrance pupil diameter of 4 mm, and an entrance pupil position located 11.7 mm behind the lens. It supports a maximum single-axis scan angle of ±10.6°, delivering a field of view of 4.7×4.7 mm and a diffraction-limited region of 4.2×4.2 mm, ensuring excellent focusing quality and imaging resolution across a wide field. With a working distance of 7.5 mm, the lens provides ample clearance for sample placement and flexible integration into complex microscopic imaging paths.

The CLS-F18-BB is ideally suited for laser sources operating in the 850–1050 nm range, such as Ti:Sapphire lasers. It is widely used in two-photon excitation microscopy, deep-tissue near-infrared imaging, and high-power laser point-scanning systems. The lens features an optimized anti-reflection coating across this wavelength band, significantly improving transmission efficiency, reducing reflection losses, and effectively minimizing thermal effects under high-power excitation, thereby ensuring stable long-term operation and high image quality.

For mechanical integration, the CLS-F18-BB is equipped with an external M25×0.75 mounting thread. It can be easily adapted to SM1 (1.035″-40) threading via the SM1A12 adapter or to RMS (0.800″-36) threading via the RMSA2 adapter, offering broad compatibility and straightforward installation. For imaging systems that require dispersion compensation (e.g., OCT or multiphoton microscopy), the lens can be paired with a dedicated dispersion compensator for the corresponding wavelength band to further enhance axial resolution and image contrast. Overall, the CLS-F18-BB scan lens combines a wide field of view, high transmittance, and deep-tissue imaging capability, making it an ideal choice for near-infrared short-wavelength laser scanning imaging systems.