LF Series Nd:YAG Laser Focusing Lenses

1. LF Series Multi-element Nd:YAG Laser Focusing Lenses

LF series Nd:YAG laser focusing lenses consist of multi-element lenses. They have high imaging quality. A small focusing spot diameter can be obtained together with the use of beam expanders. These focusing lenses are widely used in laser cutting, welding, engraving and drilling. (Reference: Calculation of Focused Beam Spot Size with a Focusing Lens)

Model	LF2	LF3	LF5
No of lenses	2	3	5
Focal length (mm)	75.772	72.122	75.202
Working distance (mm)	68.437	66.759	56.911
Max entering beam diameter (mm)	24	30	30
Laser wavelength (mm)	1064	1064	1064
Transmission	>95%	>95%	>90%
Max focused beam diameter (mm)	<0.01	0.01	0.01
Connection screw (mm)	M39×1	M48×1	M56×0.75
Dimension (AxBxC, mm)	44x16x36	54x25x44	60x42x56

2. Single-element Laser Focusing Lenses

Part No.	Name	Wavelength	Diameter	Thickness	Remark
FL-1064-01	YAG laser focusing lens	1064nm	20mm	2.5mm	dielectric coating, F=200mm
FL-1064-02	YAG laser focusing lens	1064nm	25mm	3mm	dielectric coating, F=100mm
FL-1064-03	YAG laser focusing lens	1064nm	25mm	3mm	dielectric coating, F=75mm

Other lenses available upon request.

CO2 laser focusing lenses