Description

• Long Optical Lens：Clear focus, Not stray light, Adjustable focal length.
• Optical Design Specification:Wavelength: 405nm-450nm;Effctive Focal Lengh(EFL): 30mm – 50mm;Material: D-ZK3
• Application Module: NEJE 20W 30W Laser Engraving Module；(not suitable for other brand Laser module)
• Packge List：1 Optical Lens；(Please don’t play for children under 3 years old.)