Product description:
Double concave glass lens
Double concave lens is the most common form of Negative lens. Negative lens is most suited to producing diverging light or a virtual image, where the input light is converging.
Material: BK7, Fused Silica, SF10, CaF2, Sapphire .etc. Paraxial Focal Length Tolerance: ±2% Dimension Tolerance: ±0.2(General). ±0.05(High Precision) Centration: <3 arc min IRR: λ/4@633nm(General),λ/10@633nm(High Precision) Clear Aperture: >80%(Small Size), >95%(Large Size) Surface Figure <1.5λ@633nm(General),<λ/4@633nm(High Precision) Surface Quality: 60/40(General),10/5(High Precision) Bevel: <0.25mm Coating: Uncoated, AR,PR, HR, etc.
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Product Categories : Optical Lens
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