Parameters
Model:405-G-2
Material:high quality coated glass optical lenses for all types of blue violet / blue laser products;
Lens demention: 6.33mm diameter
Transmittance: 98% or more
Lens focal length: 4.02mm
Back focal length: 4.8mm
Working distance: 2.357mm
Glass material: L-BAL35
Lens properties: single-chip
Surface treatment: 405nm / 445nm antireflection coating
They are collimating lens for blue laser diodes, can be used for NDB7875/NDB777 laser diodes.
Please keep the lens clean.

Application
This coated laser lens is a high permeability optical component used for as Industrial testament, Lab, DIY.
Before carrying on some laser DIY activities, please read about the technical information first and protect your eyes before laser ray.
Be sure the operator has experience in optics DIY or testing.

Package
5pcs 405-G-2 Coated Glass Collimator Lens for 405nm 450nm Blue Laser Diodes w Holder