Dia: 20mm FL:101.6mm 4" New ST ZnSe Focal Lens for CO2 Laser Cutting Engraving | Инструменты

High quality ZnSe Lens for 10.6um CO2 Laser Engraving Cutting Diam 20mm FL 101.6mm 4"

 

Brand New, High Quality and Extra Long Life. FEATURE: Mateial: Zns Optional Focus Length: 38.1mm/25.4mm/63.5mm ZnSe is used for optical windows, lenses, mirrors, prisms and optical blanks, plates, disks, sheets, slabs particularly for infrared applications.  Zinc Selenide (ZnSe) - transparent in wide spectral range from yellow (visible) to far IR. ZnSe material is a chemically inert, non-hygroscopic and highly pure product that is very effective in many optical applications due to its extremely low bulk losses, high resistance to thermal shock and stability in virtually all environments, easily machined. To obtain superior transmittance, ZnSe crystals are grown by Chemical Vapor Deposition process . Zinc Selenide is polycrystalline material, demonstrates superior CO2 laser transmittance and is employed in the transmission optical components used in CO2 laser processing. Specification:   Diam 20mm

Thickness

approximate 2mm

Tolerance of Thickness

±0.010''

Diameter

+0.001''-0.005''

Edge thickness variation (ETV)

<= 0.002''

Aperture

90% of the Diameter

Face accuracy (radial deviation / irregularity) at 0.63um

<= 0.20%

Surface Figure (power-irregularity) at 0.63 um

Plano:0.1 fringe - 0.5 fringe Radiused: depending on radius

Surface Quality

20-10

AR Coating Reflectivity Per surface at 10.6 microns

<= 0.20%

WARRANTY / RETURN POLICY:   30 days Satisfaction Guarantee.Retuns accepted whine 30 days. Return must in original package. Buyer is responsible for shipping the Item to us. We provide technology support by E-mail reply within 24 hours or MSN online support. shipping   All items in stock. we post the items within 24 hour once we receive the payment, including weekend. Both standard and express shipping service are avaliable. Standard shipping service will take 6-12 working days to USA by USPS.You could trace the Item at www.usps.com. Standard shipping service will take 9-17 working days to Europe (except Italy) and Australia by China air mail, Italy will take 15-30days. Express door to door service will only take about 5 working days to USA, Europe, Austrilia. Note:   We value every customer. We leave positive feedback when payment clears and very appreciate you give us positive feedback .If you are not satisfied with a transaction, please contact us and allow us to resolve it before leaving feedback. Special requirment, please put down a note when payment. We will declare the item as gift or sample with low value.