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Plano Concave Lenses

Plano-concave Lenses have one concave surface. It has negative focal length. It is often used to expand light or to increase focal length in existing systems. Specifications ..

Plano Concave Lenses

产品说明

Plano-concave Lenses have one concave surface. It has negative focal length. It is often used to expand light or to increase focal length in existing systems.

Specifications

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%(Laege 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:	Uncaoted, AR,PR, HR, etc.

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