N-BK 7 Lens

Manufactured in the USAManufactured in the USA


N-BK 7 Lenses are a specialty of Guild Optical Associates. Custom sizes and radii are manufactured to your exact specifications creating a cost effective BK 7 lens for your custom optical application. BK 7 transmits 91% from roughly 250nm – 2500nm. Guild Optics’ in house tooling capabilities allow us to create your custom radius of curvature without additional lead times or exorbitant NRC totals.


Spherical Lenses only

Diameter: From 10 mm (.393″) to 200 mm (7.875″)
Thickness: Nearly any thickness; varies by diameter
Radius of Curvature: Convex, Concave, Meniscus, in any measurement from flat to hemispherical
Surface Quality: Down to 20/10 Scratch/Dig
Quantities: From singles to full production runs

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