EFL12mm aspherical glass collimating lens

M9x0.5 mm threaded housing , single glass lens design . This single element lens gives around 15-20% increase in output compared with the 3-element lenses with a reduction in beam quality. 

Specifications:

Lens Material : Single element ; Coated optical glass

Lens Holder : 9mm x 0.5mm thread , 10mm length , brass

EFL ( Effective Focal Length): 12mm

CA (Clear Aperture) : 5.3/4.9mm

NA (Numerial Aperture) : 0.22mm

SD (Diode to lens) : 10.77m

Coating :400-700nm