N-BK7 Plano-Concave Spherical Le...

Changchun Sairuioptics Technology Co., Lt

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Basic Info

Centration	<3 arcmin	Design Wavelength	587.6 nm	Diameter Tolerance	+0.0/-0.1 mm
Focal Length Tolerance	±1%	Material	N-BK7	Surface Quality	60/40
Thickness Tolerance	±0.2mm

Product Description

Plano-concave lenses diverge a collimated beam from a virtual focus and are commonly used in Galilean-type beam expanders. Given their negative focal length and negative spherical aberration, plano-concave lenses can be used to balance out aberrations of other lenses in the system.