Infrared Cryogenic Imaging Optics

Optimized for 8-11.5 micron light

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

Germanium and Zinc Selenide optics optimized for 8-11.5 micron wavelength range
31 mm Entrance Pupil Diameter located 12 mm in front of lens
17-degree full Field Of View
18 mm back working distance for your spectral filter, or let RSI provide one to fit your needs.

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
Housing Substrate	Aluminum
MTF Performance	≥0.59 at 12.5 lp/mm
AR Coated	Per your specification
Mechanical Envelope	Ф50 mm, 77 mm long
Mechanical Interface	Thread-Mounted

Optical Layout

Optical Layout - Infrared Cryogenic Imaging Optics

Near Diffraction-Limited Performance at Cryogenic Temperatures:

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

Infrared Cryogenic Imaging Optics

Infrared Cryogenic Imaging Optics

Performance: Spot Diagram of image rays on image plane.

Performance: Spot Diagram of image rays on image plane.

Performance: Modulation Transfer Function in Spatial Frequency Space.

Performance: Modulation Transfer Function in Spatial Frequency Space

Contact Jim Caron at caron@rsimd.com for more information and to customize your order.

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