An Investigation of Infrared Diffuser Surfaces
Abstract
A study of several possible infrared diffuser surfaces has been carried out for near-normal (psi = 10 deg) incident radiation. Gold-coated grit surfaces, chemically etched aluminum, powdered sodium chloride, sulfur, magnesium oxide, and beaded surfaces were investigated using infrared bandpass filters. Angular distribution measurements of reflected radiation were made for the following infrared wavelength intervals: lambda < 1.4, 7.5 to 14.5, 11.8 to 15.5, 14.0 to 23, and 19.1 to 22.5 micrometers. Of all the surfaces investigated, it appears that powdered salt coatings are the most uniform and come closest to being a Lambert surface for infrared radiation. The gold-coated grit surfaces and the chemically etched aluminum also diffuse the infrared radiation somewhat but are nonuniform when viewed on a small scale.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 1974
- Accession Number
- AD0779771
Entities
People
- A. Matthew Smith
- Bobby E. Wood
Organizations
- Arnold Engineering Development Complex