Feature

●HIGH-QUALITY CVD ZnSe: OMTechs powerful focus lenses are manufactured from premium zinc selenium via chemical vapor deposition for superior optical properties
●HIGH TRANSMITTANCE: Both sides of each lens are coated with strongly antireflective coatings to achieve a better than 99.5% transmittance rate for infrared light at a wavelength of 10.6 microns
●LASTING DURABILITY: Our laser engraver focus lenses double-sided coating process also ensures outstanding scratch resistance for a long service life
●WIDE COMPATIBILITY: This 20mm laser focus lens can be used in your 50W-80W CO2 laser engraving and cutting machine for more accurate and efficient production
●EASY TO USE: The meniscus shape of OMTechs engraver focal lens lets you install it easily and correctly onto your machine in the proper orientation; detailed cleaning instructions also help you take the best care of your lens


Description

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Excellent Performance

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

Features

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Premium Material

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

Lasting Durability

Our 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, all to ensure they arrive at your door in perfect mint condition.

Product Information

Diameter 20mm
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"
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Cleaning Your Lens

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Step 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.

Step 2

Gently wipe the surface of the lens with an alcohol-soaked pad or swab to remove any fingerprints or similar oily smudges.

Step 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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20mm USA CVD Znse Laser Focus Lens 18mm USA CVD Znse Laser Focus Lens 12mm USA CVD Znse Laser Focus Lens Si Laser Reflective Mirror Mo Laser Reflective Mirror
Diameter 20mm 18mm 12mm 20/25mm 20/25mm
Focal Length 1.5/2/2.5/3/4 inch 1.5/2/2.5/3/4 inch 1/2/3/4 inch X X
Material USA CVD Znse USA CVD Znse USA CVD Znse Silicon Molybdenum
Wavelength 10600nm 10600nm 10600nm 10600nm 10600nm