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3 March 1981 Absorbing Coatings For The Far Infrared
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Proceedings Volume 0257, Radiation Scattering in Optical Systems; (1981)
Event: 1980 Huntsville Technical Symposium, 1980, Huntsville, United States
Far-infrared optical sensors operating in the submillimeter wavelength region require baffle systems to suppress stray light. Because a high degree of rejection of the stray light is required, the baffle systems must use highly absorbent coatings. Most common optical baffle coatings are not functional at wavelengths greater than 100 μm. However, multilayer coatings have been developed that minimize front surface reflectance and maximize absorptance with a minimum required coating thickness. Data for a polyurethane binder and carbon-pigmented coating show that a multilayer coating with a thickness of approximately 5 mils has a reflectance of less than 10 percent over the wavelengths out to 300 μm.
© (1981) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
J. R Grammer, L J. Bailin, M D Blue, and S Perkowitz "Absorbing Coatings For The Far Infrared", Proc. SPIE 0257, Radiation Scattering in Optical Systems, (3 March 1981);

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