Collimating Lens - Dia. <5.0mm

The laser diode collimators, or laser diode collimating lens, are optical elements which focus the laser beams, or just focus at infinity with little or no parallax. For different uses, they are designed in different diameters and different focal lengths to fit optical mechanism. General speaking, the longer the focal length is, the better collimating it would be for diode laser collimation. It is because the diode laser lase as Gaussian Beam.

Here under list products with diameter <5mm.

Product ID	Dia.	Focal Length	N.A.	Div. Angle	BFL	pdf	Buy
CO2.4FL1.1	2.4	1.14	0.55	57°	0.72
CO2.4FL1.5	2.4	1.45	0.56	58°	0.88
CO3FL2	3	2	0.5	53°	1.09
CO3FL3.2	3	3.2	0.37	40.5°	2.09
CO3FL3.8	3	3.8	0.33	36°	2.99
CO3FL4.5	3	4.5	0.3	33°	3.46
CO3FL5	3	5	0.25	28°	4.03
CO3FL6	3	6	0.22	24.5°	5.2
CO4FL4	4	4	0.4	43°	2.91
CO4.5FL2.75	4.5	2.75	0.64	65°	1.5
CO4.5FL8	4.5	8	0.22	24.5°	6.73
CO4.7FL6.2	4.7	6.2	0.3	33°	4.37

unit : mm

Note: We provide standard AR coating within 400-700nm or 600-1050nm. For customized coating, please contact us.

Outline dimensions：