New Laser Znse Plano Concave Negative Lens Cnc Cutting

US $49.00

Haifa, Israel
Mar 7th

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Negative ZnSe lens! Up for your bid is a high quality NEW ZnSe Plano-concave lens. The lens is 10mm (0.394") in diameter and is about 3mm (0.12") thick. The focal length is -20.2mm (-0.795"). It is specified for 2.94um (Er:YAG laser) and 0.635um (red diode laser) wavelengths. It may also work for CO2 lasers because ZnSe also transmits 10.6um well. Negative focal length (concave) lenses are useful in a "telescope" arrangement together with a convex lens. This creates a beam expander that allows to create a wider laser beam. There are several advantages to a wider beam: first, it has a lower divergence. Second, and very important for laser CNC setups, is the fact that the wider the beam is when it hits the focusing lens, the smaller the spot at the focal point. A smaller focal spot means the power of the beam is concentrated in a smaller area, and the higher power density allows more powerful and accurate cutting / engraving action. This lens is NEW in the original FACTORY BOX and is untouched. I only opened one of these for taking the pictures. You get an unopened box. ZnSe optics cost a fortune when bought from the manufacturer. Buy on eBay and save! I have more of these, as well as other optics for many types of lasers. Contact me if you are interested in a quantity purchase or another type / size of optic. This item is guaranteed non-DOA! Take a look at my other items on eBay! Terms and Conditions If you have any questions regarding this item, feel free to ask and we'll answer to the best of our knowledge. Payment through Paypal is preferred. a bank wire transfer is also possible. For other methods, please contact us directly. We ship all over the world. We've shipped countless times to the USA and Europe, and it goes smoothly and quickly. Estimated delivery time is up to 14 days. Our shipping method is EMS (Postal Service Express Mail Service) - very reliable from our experience. It has online tracking and insurance is also available for a small fee. We COMBINE SHIPPING for multiple items! this will significantly lower your shipping costs if you buy several items. Please note that any customs duties and taxes are the responsibility of the buyer - however in our experience, in many cases there is no charge. When in doubt, please consult the regulations in your country. Israel residents must pay VAT (currently 18%) as required by law. GOOD LUCK BIDDING! Powered by SixBit's eCommerce Solution

Condition:

New: A brand-new, unused, unopened, undamaged item in its original packaging (where packaging is applicable). Packaging should be the same as what is found in a retail store, unless the item is handmade or was packaged by the manufacturer in non-retail packaging, such as an unprinted box or plastic bag. See the seller's listing for full details. ...

Product Type

Laser ZnSe lens