🔬 Overview
-
The AC254‑075‑B‑ML is a mounted, Ø 1-inch achromatic doublet lens with a 75 mm focal length, pre‑mounted in an engraved SM1‑threaded housing for easy integration into Thorlabs optomechanics.
-
It features a broadband anti‑reflection coating (BBAR) optimized for the 650–1050 nm near‑IR range, delivering average reflectance under 0.5%
-
Designed for best performance at the design wavelengths of approximately 706.5 nm, 855 nm, and 1015 nm, offering minimized chromatic aberration
✅ Key Specifications
| Specification | Details |
|---|---|
| Aperture Diameter | Ø 1 inch (≈ 25.4 mm) |
| Focal Length (EFL) | 75 mm |
| Mount Thread | SM1 (1.035″–40) |
| Coating Range | 650–1050 nm (BBAR) |
| Reflectance (Avg, at 0°) | < 0.5% |
🧰 Use Cases & Tips
-
Ideal for modular optical setups: collimating diode lasers, building beam expanders, imaging systems, or focusing broadband light near 650–1050 nm.
-
Precision mounting via SM1 thread means effortless compatibility with lens tubes, cage systems, or precision optomechanics.
-
Because it is cemented, it offers mechanical robustness and lower internal scatter compared to air‑spaced lenses.





