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Meniscus Lenses(Meniscus)
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Crystaltechno Ltd. manufactures menicus lenses from different types of optical crystals, glasses and Fused Silica.
Spherical meniscus lenses are widely used as focusing transfer optics and output optics. So far the meniscus lenses have lower aberration spot values than plano-convex ones, they are usually used at the power laser systems or in the image transmitting schemes.
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PARAMETER |
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VALUE |
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Surface figure |
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Lambda/2 per inch |
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Scratch-Dig |
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40-20 (FS, BK7)
60-40 (CaF2, BaF2, MgF2, LiF, sapphire Al2O3, Ge,Si, Zinc Selenide (ZnSe) CVD, ZnS)
80-50 (KRS-5,) |
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Diameter tolerance |
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± 0.1 mm |
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Paraxial Focal Length Tolerance |
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± 2% |
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Centration |
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less than 5 arc minutes |
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Clear aperture |
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90 % |
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Bevels |
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(0.3-0.5) mm x 45° |
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Crystaltechno LTD makes meniscus lenses from the list of optical materials below:
CaF2
BK7
Fused Silica
CaF2
BaF2
MgF2
KRS-5
Al2O3
Si
Ge
ZnSe
Ordering Info
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