Product Description
As per Newport Website:
The 77501 Radiometric Fiber Optic Source uses a 100 W quartz tungsten halogen lamp as the source of b roadbandVIS-NIR radiation. It is completely integrated into a compact enclosure with prealigned lamp mount and fiber holder. The lamp is a 100 W QTH lamp with a 2.3 x 4.2 mm filament. This large filament is suitable for fiber bundles and liquid light guides. The lamp is replaceable (average lamp life is 50 hours). An aspheric lens collects and collimates the lamp output. A second, plano convex lens, re-images the lamp filament onto the fiber input. The 77501 does not include a fiber optic. It accepts any 11 mm ferrule terminated Oriel® Fiber. Choose the 77501 when you need a highly stable, VIS-NIR large core fiber illuminator. The spot size is 6 mm, so it is not recommended for small core fibers. The 77501 also includes a number of built-in convenience features Including: a filter holder for 1 inch (25.4 mm) diameter filters, so you can shape the output, a light shutter to cut off all the light without shutting down the power supply, and a variable iris so you can change the light level without changing the voltage.