Angular dependent optical properties of coated glazings - Validation of two predictive algorithms

Arne Roos, Joakim Karlsson, Peter A. Van Nijnatten, Michael G. Hutchins, Pietro Polato, Enrico Nichelatti, Marco Montecchi, Francois Olive, Charles Anderson

Research output: Contribution to journalArticle

5 Citations (Scopus)


The angular dependent optical properties of low-e and solar control glazings have been investigated in a European project, ADOPT, within the Standards Measurements and Testing programme. Two new predictive algorithms have been proposed and tested. One algorithm is based on an empirical formula and the other is based on a hybrid equivalent model, which approximates the actual coated glass. The validation procedure has included measurements as well as Fresnel calculations. The algorithms allow the user to calculate the solar heat gain coefficient versus angle of incidence for any transparent window combination without having to perform time-consuming measurements. For the tested window configurations the precision is mostly within one percentage point as compared to measured results.
Original languageEnglish
Pages (from-to)19 - 28
Number of pages10
JournalProceedings of SPIE - The International Society for Optical Engineering
Publication statusPublished - 2001
Externally publishedYes


All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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