Thorlabs AC254-150-A-ML Mounted Achromatic Doublet Lens

The AC254-150-A-ML is a mounted achromatic doublet lens with a 150 mm focal length (~f-number varied slightly due to tolerances) and a 25.4 mm (Ø1″) diameter, featuring an SM1-threaded mount (1.035-40) for easy integration.

It comes with an anti-reflection coating optimized for the 400–700 nm spectral range, enhancing transmission and reducing reflections.

The lens is constructed from N-BK7 and SF5 Schott glasses, a standard pairing for achromatic doublets aimed at minimizing chromatic aberration in the visible range.

On OptoMechs, additional technical details include:

• Clear aperture of > 90% (~which gives about 22.9 mm usable diameter)

• Mounting threads: SM1 (1.035″-40)

• Average reflectance over the AR coating is < 0.5%

• Operating temperature range: –40 °C to +85 °C