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Double
Concave lenses have two inward curved surfaces
and a negative focal length. They are used for
image reduction and to spread light.
Specifications & Tolerances
Focal Length: ＼ 1%
Thickness: ＼ 0.1mm
Surface Quality: 40-20 Material: BK7, Fused Silica, SF11
Diameter: + 0, -01mm Centration: ＼
1arcmin
Aperture: >90%
Coating: Optional
Broadband AR 400-700nm (other wavelength
available)
Damage Threshold: 10J/cm2 , 8nsec pulse;
1MW/cm2, CW at 1064nm typical
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Standard focal lengths from -10 to
-400mm |
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Standard diameters from 10 to 50.8mm |
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Complete range of optional
anti-reflection coatings available |
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Lenses
Mounts available |
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Customer
special requirements available |
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