18mm ZnSe Focal Lens 10600nm CO2 Laser Engraver Cutter Focus

Features: .

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 18mm, 38.1mm/1.5" ,50.8mm/2",63.5mm/2.5", etc (please contact us for other specification via ebay message)

Details:

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!

Package:

1 x 18mm ZnSe Focal Lens 10600nm CO2 Laser Engraver Cutter Focus

Payment Method

PayPal Preferred

Shipping & Delivery

We provide free shipping to international via China Post Airmail or Hong Kong Post Airmail,

and every parcel will be registered with tracking number.

We can also ship by UPS/EMS/DHL/FedEx for alternative shipping method for corresponding fees.

International customers may experience delays by customs or national post providers. Review your duty-free limits.

Please let us know before payment if you need split shipment.

Time of Delivery

The time to ship to international via China Post Airmail or Hong Kong Post Airmail quite depends on different destination of the world,

it is also subject to change due to the local weather conditions, postal policy and custom checking.

Based on the postal Air mail rules and our experience, kindly please be noted that To United States / United Kingdom / Australia,

it takes around 10-15 business days;

To Canada, it takes around 12-18 business days;

To Brazil / South America, it takes around 25-35 business days.

To Italy / France / Spain / Germany/ Eastern Europe, it takes around 15-20 business days.

Returns & Replacements & Repair

We accept returns & replacements within 14 days from the day the customer receive the products,

please make first contact within 14 days from receiving the order. Products should be returned in original condition.

As a benefit to our customers, we also provide repair within 3 months from the day when this item is shipped out, after repair is done,

we will send you the item, but the customer should pay both shipping ways.