OMTech 18mm ZnSe Focus Lens for Laser Engraving Machines

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OMTech, a collaboration of 30-year industry veterans and promising new technicians in Anaheim, California, has quickly grown into the largest online brand for precision engraving with its affordable yet quality lasers and US-based support.

What makes OMTech special is the supportive online family its users have built up in the forums and social media, where they share inspiration and sharpen their DIY skills together, alongside the company's skilled and helpful staff.

OMTech's growth is inseparable from the success of its users, which is why the company is dedicated to keeping the OMTech family on the cutting edge of laser crafting.

Excellent Performance

OMTech's laser engraver focus lenses are made from CVD ZnSe for superior performance and an extended service life. Both sides of the lenses bear strong antireflective coatings to deliver better than 99.5% transmittance of 10.6 μm infrared light, allowing your CO₂ laser engraving machine to work better and faster.

Premium Material

OMTech's laser engraver focus lenses are made in the USA from first-rate chemically vapor deposited zinc selenide for exceptional service and durability.

Lasting Durability

OMTech's laser engraving focal lenses undergo a double-sized coating process to offer superior transmittance of infrared light as well as improved resistance to scratches and dents.

Secure Packaging

Each lens is shipped swaddled in soft protective foam above and below inside a secure plastic case, ensuring they arrive at your door in perfect mint condition.

Product Information

Diameter: 18mm Diameter Tolerance: ±0.1mm Material: USA CVD Znse Transmittance: ≥99.5% Clear Aperture (polished): ＞90% Package Weight: 0.68 lb. Thickness: 2mm Thickness Tolerance: ±0.2mm Focal Length: 1.5/2/2.5/3/4 inch Centration: ＜3 arc minutes Double-side AR Coating: R＜0.5% per surface Package Dimension: 3.15" x 2.76" x 0.79"

Cleaning Your Lens 1. Wearing gloves or finger cots, use a squeeze bulb or similarly gentle device to blow dust and other impurities from the surface of the lens. 2. Gently wipe the surface of the lens with an alcohol-soaked pad or swab to remove any fingerprints or similar oily smudges. 3. Gently pad the surface of the lens with a clean and dry cotton pad or swab to remove any excess alcohol or moisture.

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