Features: l With 1 inch (25.4mm) clear aperture, the instrument features small size and light weight, suitable for both laboratory and field use. l 20° incident angle pendulum interferometer, adopting self-compensation 20° incidence IR and laser beam splitter, and two laser detectors, improves optical efficiency 1.3 times comparing to traditional interferometer. l IR source hangs on interferometer chamber wall, with high efficiency of heat dissipation, thus good thermal stability. l Isolated vertical arrangement of optical system and electronic system makes the instrument more compact and with better anti-interference capability. l Fully sealed damp and dust- proof interferometer, adopting high performance, long lifetime sealing material and desiccator, ensures good adaptability to the environment l 5mm light spot in the sample compartment improves measurement sensitivity 3~6 times. l Horizontal rotary sample compartment door design saves space. Specification: l Spectral Range l Resolution