The Focusing Beam probes focus the output of our Fused Silica Fiber Bundles. The fiber bundle is placed one focal length from Lens 1, to produce a collimated beam. This collimated beam is focused one focal length from Lens 2. The working distance is 7 mm less than the focal length of Lens 2. Lens 1 is a 19 mm focal length, F/1.7 fused silica lens, and is included with the probe. Choose lens 2 from the Lenses Ordering Information Table, based on the image magnification and working distance required. The nominal magnification is defined as the ratio of the focal lengths of Lens 2 to Lens 1. We offer two models; the 77662 has a shutter that completely closes off the beam. The less expensive 77646 does not include a light shutter.
The Imaging Beam probe images the output from Oriel^® Glass Fiber Bundles (for liquid light guides, see Collimating Probes for Oriel^® Liquid Light Guides). It uses a complex lens (Lens 1) to collect the light, and a second lens, Lens 2, to re-image the end of the fiber bundle one focal length away. You can re-image at 1:1, 2 mm from the end of the probe, ...

The Focusing Beam probes focus the output of our Fused Silica Fiber Bundles. The fiber bundle is placed one focal length from Lens 1, to produce a collimated beam. This collimated beam is focused one focal length from Lens 2. The working distance is 7 mm less than the focal length of Lens 2. Lens 1 is a 19 mm focal length, F/1.7 fused silica lens, and is included with the probe. Choose lens 2 from the Lenses Ordering Information Table, based on the image magnification and working distance required. The nominal magnification is defined as the ratio of the focal lengths of Lens 2 to Lens 1. We offer two models; the 77662 has a shutter that completely closes off the beam. The less expensive 77646 does not include a light shutter.
The Imaging Beam probe images the output from Oriel^® Glass Fiber Bundles (for liquid light guides, see Collimating Probes for Oriel^® Liquid Light Guides). It uses a complex lens (Lens 1) to collect the light, and a second lens, Lens 2, to re-image the end of the fiber bundle one focal length away. You can re-image at 1:1, 2 mm from the end of the probe, with the 40230 Lens. Or, form a larger image at greater distances. At 100 mm from the probe, the magnification is 12.5 and you can clearly see the individual fibers. Select Lens 2 from the Lens Ordering Information Table.