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




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