Focusing Lens Collimating Coated Replacement Glass Lens for NEJE MASTER 3500mw / 7W laser engraving / cutting module head

Optical Design Specification:
Design Wavelength: 405nm-450nm
Effctive Focal Lengh(EFL): 10mm – 50mm
Material: D-ZK3
New lens, Clear focus, Not stray light, Adjustable focal length.
Vacuum packaging delivery.

About Long Focus Length Specification

Focusing Lens for NEJE MASTER 20W laser head
Optical Design Specification:
Design Wavelength: 405nm-450nm
Effctive Focal Lengh(EFL): 30mm – 50mm
Material: D-ZK3
New lens, Clear focus, Not stray light, Adjustable focal length.
Vacuum packaging delivery.

Please note that the physical color is black, not accepted disputes or refunds due to the color.