Secondary Focusing Lens Assembly
These lens assemblies focus the collimated beam from a condenser and create an image of the arc or filament one focal length away. They consist of a plano convex lens and a flanged lens holder. The lens holder is also available separately if you need to mount a different focal length lens. Here we list fused silica lenses only. We can also supply infrared lens assemblies for our IR sources. Contact a Sales Engineer for details.
We offer a family of Fiber Bundle Focusing Assemblies for Oriel Light Sources. Choose one of these when you need to focus a collimated source into a single core fiber, and require maximum throughput.
If you have enough beam power, choose the secondary focusing assembly with the focal length most convenient for your optical system. But if you want as much power as possible and therefore cant afford to waste any, F/# matching becomes very important. The lower the F/#, the smaller the focused spot. If you are illuminating a monochromator or a fiber, we recommend that you choose one of our dedicated Monochromator Illuminators or Apex Fiber Illuminators. These sources have a focused output matched to our 1/8 and 1/4 m monochromators and fused silica fibers.