MSE PRO BK7 Plano-Concave Lenses with 1/4 Wave MgF₂ Coating@550nm, Ø1/2"

MSE PRO™ BK7 Plano-Concave Lenses with 1/4 Wave 

MgF₂ Coating@550nm, Ø1/2"

MSE supplies offers Ø1/2" BK7 Plano-Concave Lenses with 1/4 Wave MgF₂ Coating@550nm. It is a plano-concave lens diverges parallel input rays. It has a negative focal length. While the output rays do not actually meet to form a point, they do appear to be diverging from a virtual image located on the object side of the lens. At absolute conjugate ratio greater than 5:1 and less than 1:5, plano-concave lenses are nearly the best form lens to reduce spherical aberration, coma, and distortion. The curved surface of the lens should face the object in distance or infinite conjugate, except in a high energy laser system, this should be reversed to eliminate the possibility of a virtual focus.

MSE Supplies can offer a variety of optical elements, with different focal length and coating options. Please contact us for customization or bulk orders. 

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