Description
M9×P0.5 NIR Collimating Lens for 850nm Laser Diodes — EFL 13.554mm
Our M9-threaded NIR collimator lenses with 13.554 mm effective focal length are engineered for 830–870 nm laser diodes, specifically optimized at 850 nm.
Featuring a precision glass aspheric element with >97% transmission BBAR coating at 850 nm and a fine-thread M9×0.5 metal housing for in-situ focus adjustment, these compact assemblies deliver low-divergence collimated beams for LIDAR transmitters, IR illuminators, and OEM NIR LD packaging.
Custom EFL (8.0 / 18.0 / 24.0 mm etc.), threads (M6/M10/M12), and coating bands (905 nm / 940 nm / 1064 nm) available on request.
Specifications:
-
Mount / Thread: M9 × P0.5 (fine pitch), full or half thread; overall length ≈ 10 mm
-
Effective Focal Length (EFL): 13.554 mm (±2% tolerance)
-
Design Wavelength: 830–870 nm (optimized @ 850 nm)
-
Lens Element: Molded glass aspheric or AR-coated N-BK7 / Fused Silica plano-convex
-
Clear Aperture (CA): Ø5.5 – Ø6.5 mm (typical Ø6.0 mm)
-
Numerical Aperture (NA): 0.22 – 0.32 (matches typical 5.6 mm / 9 mm TO-can NIR LD)
-
Working Distance (WD): ≈ 11.0 – 12.2 mm (adjustable by thread depth)
-
Coating: BBAR @ 830–870 nm (Ravg < 0.5% per surface; Rs < 0.3% @ 850 nm)
-
Housing Material: Nickel-plated brass or black-anodized aluminum
-
Transmission: ≥ 97% @ design wavelength
-
Surface Quality: 60-40 / 40-20 Scratch-Dig
-
Recommended LD: 5.6 mm / 9 mm TO-can NIR LD (850 nm), typical multimode emitter
We are professional manufacture on the optical lenses &lasers for over 20 years experience.
With the advanteges,we offer optical products in the fileds of University laboratory, Industry, Scientific research,Medical treatment, Mechanical equipments, lasers and Construction industry and so on.
Looking forward to communicating whether we have the opportunity to cooperate. For the lens/laser products you need, I would like to quote our competitive price.
Please contact for any custyom needs,
Contact:Rebecca Xu
Email: rebecca@realpoo.cn
