Cheap lens optical, Buy Quality lens 20mm directly from China lens laser Suppliers: Dia 20mm Optical Laser Lens, Focusing 63.5mm
Optical Laser Focusing Lens Diameter 20mm FL 63.5mm 1. Features: 1) Diameter :20mm 2) Focal length :63.5mm/2.5" 3) Thickness :2mm+-0.2 4) Material :Imported USA CVD ZnSe 5) Structure :Meniscus lenses(wavelength 10.6um) 6) Usage : Apply for co2 laser cutting and engraving 7) ZnSe lenses can be provided as a generated blank, polished optic and/or coated to your requirements. We control the quality of the optic from material, through fabrication and coating, thus ensuring that you receive the highest quality optic in the market. 2. Specifications: Diameter Tolerance : +0/-0.13mm Thickness Tolerance: ±0.25mm FL Tolerance: Centration: Clear Aperture: >90% Surface Figure: Surface Quality: 40-20 scratch and dig AR/AR coating: R
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