R74 USAF Thermal Imaging Test Chart Group -2/1 to Group 4/6

The R74 Thermal Imaging test chart, with improved dual material, electroformed construction, provides a clear optical path USAF resolution pattern. Suitable for resolution testing of Thermal, Far IR, UV and X-ray systems.

The front blackened 100mm square copper foil supports a finely patterned nickel central foil. The open apertures provide a clear air path pattern, to eliminate chromatic and absorption issues experienced with other solid substrate formats.

 

Dimensions
100mm x 100mm

Glass Type and Thickness
Copper/Nickel Foil 0.16mm thick

Method
Etched copper foil, electroformed nickel central image, blackened front surface