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20mm ZnSe Focal Lens 10600nm CO2 Laser Engraver Cutter Focus 1.5"2"2.5"3"4"5"7.5

Availability: In stock


Quick Overview

Based in Wuhan, Central China Hubei Province, Lilly Electronics is engaged in fabrication, sales and R&D of consumer electronics maninly in the industry of Laser, IC and LED! You are welcome to visit us for culture exchange and mutrual business development and progress.

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ZnSe material is a polycrystalline material transparent yellow crystalline particle size of about 70μm, tr...ansparency range 0.5-15μm.
By the chemical vapor deposition (CVD) method for the synthesis of non-existent impurities absorption, scattering loss is very low.
Because of 10.6μm wavelength of light absorption is very small , thus becoming the selected material in production of high -power CO2 laser optics system.
It is commonly used in various optical system.
ZnSe material has highly thermal-shock ressistant, making it the best optical material in high-power CO2 laser system .
Its hardness grade is just 2/3 of the ZnS multispectral, the material is relatively soft and easy to produce scratches, also has great refractive rate, so it is necessary plating on the surface with high hardness antireflection coating to protect it and to get a higher transmittance rate.
The scattering of light is low. When used as material for high-power laser devices, need to strictly control material absorption and internal structural defects , and using the polishing technology with minimal- damage and the highest-level quality of coating process.
This type of Focusing lens is of high quality, the material is with cylindrical polished, high transmittance, enhanced coating process and durable easy stripping, after focusing, it has fine laser dot shape and procude quality cutting engraving result.
CO2 laser focusing lens is widely used in laser processing , laser engraving machine , laser engraving machine, laser marking machine , laser cutting machine indispensable accessories!

Thickness: approximate 2mm
Tolerance of Thickness: ±0.010 mm
Tolerance of Diameter: +0.000mm-0.005mm
Edge thickness variation (ETV): <= 0.002
Aperture: 90% of the Diameter
Face accuracy (radial deviation / irregularity) @0.63um<= 0.20%
Surface Figure (power-irregularity) at 0.63 microns
Plano: 1 fringe - 0.5 fringe
Radiused: depending on radius
Surface Quality: 20-10 AR Coating
Reflectivity Per surface at 10.6 microns: <= 0.20%
Specifications available: Diameter 20mm/19.05mm/18mm/25mm FL=25.4mm/1 inch, 38.1mm/1.5 inches, 50.8mm/2 inches, 63.5mm/2.5 inches, 100mm/4 inches, etc (please contact us for other specification via ebay message)

1 x 20mm ZnSe Focal Lens 10600nm CO2 Laser Engraver Cutter Focus 1.5"2"2.5"3"4"5"7.5

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