Meniscus lens

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Meniscus lens
Posting date : Jun 18, 2010
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Free Member Scince Jun 18, 2010
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90-
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Detailed Description
We call them Meniscus lenses because the two curves of the lens lies on the same direction, just like a meniscus when view by its cutaway view. Specifications Material: .............................BK7, Silica, CaF2, Silicon, etc. Diameter Tolerance: ....................................+0.0, -0.1 mm tc tolerance: .....................................................±0.1 mm Clear Aperture: .......................................................>85% Surface Quality: ......................................................40-20 Flatness: .......................................................N=3, △N=1 Centration: ....................................................±3 arc mins Size (φ): ............................................3 to 200mm or larger Part No. F(mm) Dia(mm) Rad1(mm) Rad2(mm) Tc(mm) Te(mm) fb(mm) PML 101 100.0 25.4 33.72 90.0 4.0 2.5 97.5 PML 102 125.0 25.4 38.47 90.0 4.0 2.8 121.8 PML 103 150.0 25.4 42.52 90.0 4.0 3.0 146.3 NML 101 -100.0 25.4 90.0 32.59 3.0 4.5 -99.2 NML 102 -125.0 25.4 90.0 37.26 3.0 4.2 -123.7 NML 103 -150.0 25.4 90.0 41.42 3.0 4.0 -149.5 Note: Other sizes and specifications are available upon request.

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