II-VI Focusing Lens — USA CVD ZnSe
Meniscus lenses are designed to minimize spherical aberration producing a minimum focal spot size for incoming collimated light.

Product Structure

|  | High-quality ZnSe crystal USA CVD ZnSe material Up to 300W CO2 laser resistance | 
| High precision process Precise sling, polishing, grinding processes High temperature, laser resistance |  | 
|  | High Transmittance 99.5% High quality material and exquisite coating reduce the loss of laser | 
| Superb Coating Process
 Doble-sided solid coating Wipeing resistance extended durability |  | 
Product Size

Laser Path

How to determine focal length


| Diameter | 38.1mm(1.5″) | 50.8mm(2″) | 63.5mm(2.5″) | 76.2mm(3″) | 101.6mm(4″) | 
| 19.05mm | Plano convex | Plano convex | Plano convex | – | – | 
| 20mm | Plano convex | Meniscus | Meniscus | Meniscus | Meniscus | 
| Material: USA CVDZnSe | Wavelength:10.6um | ||||
| Diameter:12,18,19.5,20,25mm | Diameter Tolerance:±0.1mm | ||||
| FocusLength:1.5,2,2.5,3,4,5inches | Focus Length Toleance:±2% | ||||
| Transmittance:99.5% | Clear Aperture(Polished)>90% | ||||
| AR CoatingReflectivity<0.3% | Scratch-Dig:20-10 | ||||
Raylasers Test Process


Clean instructions
1.Use an air bulb to blow off any loose contaminants. (dust, lint particles)
2.Squeeze a few drops of acetone onto the lens tissue, wetting the complete optic’s diameter. (smudges, fingerprints)
3.Using the cotton swab and distilled vinegar, wipe the lens. Immediately use a wet cotton swab to remove any acetic acid, then clean with a clean dry cotton swab. (spittle, oils)

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