RSI's IR Beam Expander is now for sale.  Features include:

• Germanium and Zinc Selenide optics optimized for 8-11.5 micron wavelength range
• 3.7-times magnification
• 8.36 mm effective Entrance Pupil Diameter
• 45-degree full Field Of View
• 40 mm back working distance to Exit Pupil
• Adjustment capabilities for collimation, 120 threads-per-inch

Applications

• Hyper- & Multi- Spectral Imagers
• Chemical & Bio-agent detection
• Target image recognition & analysis
• Matched to currently available RSI/PSI products:
• Fabry Perot Wide-Angle Interferometer
• Infrared Beam Expander

Specifications
Optical Substrate	Germanium & ZnSe
Housing Substrate	Aluminum
AR Coated	Per your specification
Mechanical Envelope	Ф50 mm, 65 mm long
Mechanical Interface	Flange-Mounted

Optical Layout:

Near Diffraction-Limited Performance:

• 87% Encircled energy at Airy disk radial distance from centroid 0.4-milliradians
• Wavefront error nearly invariant over field
• Corrected for Spherical and Coma
  

Performance: Spot Diagram of image rays in radians at exit pupil.

Performance: Modulation Transfer Function in Spatial Frequency Space.

Contact Mark Boies (Boies "at"  rsimd.com) for more information and to customize your order.