DiOptika 20X Beam Expander 1300nm to 1700nm

• Large Output Clear Aperture: 47mm Diameter
• Clear Max. Input Beam Size(based on 20X): 2.35mm
• Clear Input Aperture: 5mm
• Optical Material: F2
• Expansion Ratio 20X
• Wavelength Range: 1300nm to 1700nm
• Adjustable focus to collimated or focus different wavelengths
• High performance better than lambda/4 design
• Damage threshold > 500Wcm2
• Three element optical design corrected for spherical abberation
• Compact Optical Length: 135mm
• AR coated  lenses with high 97% throughput
• Variable focus (2m to infinity) via knurled adjustment ring
• Optional flat mounting base with M4 & 8-32 mounting holes
• Optional 10X and 15X attachments avaialble to change expansion ratio
• Comes with storage case