Beam expander 4X

4X Reimaging Beam Expander For Very Small Beams Description: Beam expanders are designed to work with C-mount threaded cameras that have 4.5mm imager back focal spacing or with CS (12.5mm) back focal spacing. The 4X beam expander is an expanding telescope that images the beam as it looks at 8mm from the end of the expander onto the CCD while enlarging the image 4X. Specification Recommended Wavelengths: 400 - 1800nm Interface: C-mount Approximate Expansion Ratio: 4X Total Assembly Length: 50mm