achromatic lens(doublets or triplets)

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achromatic lens(doublets or triplets)
Posting date : Jul 16, 2010
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Free Member Scince Apr 26, 2010
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69-
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Detailed Description
"Achromatic Lens is an achromatic consists of a positive low-index Crown Glass lens element cemented to a negative high-index Flint Glass lens element. Specification of our achromatic lens as follow: *Material:BK7 and ZF2(or according to your request) *Dia.:+0/-0.05 *Center thickness tolerance:+/-0.1 *Surface quality: 60-40 Scrath/Dig *Surface figure:0.5-0.2 *Centration < 3arc min *Chamfer:0.1-0.25*45 degrees *Design wavelength:486.1mm,587.6mm,656.3mm (the parameter is demision of nomal lens,so specification will be changed according to different demision and material)"

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