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Materials | K9,BK7,etc or custom |
Diameter | 40mm |
Diameter Tolerance | -0.00/-0.10mm |
Thickness Tolerance | +/-0.10 |
Focus Length Tolerance | +/-2% |
Centration | <3 arcminutes |
Surface Quality | 60-40 |
Surface Figure | λ/4@633nm |
Bevel | <0.25mm X 45° |
Clear Aperture | Central 85% of diameter |
Coating | Double Layers MgF2 Coating Achromatic Optical Lens |
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1. Great care should be taken when handling infrared optics. Please note the following precautions :
1) Always wear powder-free finger cots or rubber/latex gloves when handling optics. Dirt and oil from the skin can severely contaminate optics, causing a major degradation in performance.
2) Do not use any tools to manipulate optics -- this includes tweezers or picks.
3) Always place optics on supplied lens tissue for protection.
4) Never place optics on a hard or rough surface. Infrared optics can be easily scratched.
5) Bare gold or bare copper should never be cleaned or touched.
6) All materials used for infrared optics are fragile, whether single crystal or polycrystalline, large or fine grained. They are not as strong as glass and will not withstand procedures normally used on glass optics.
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