Automobile windscreen rake, spectacle lenses and effective transmittance

Glyn Walsh

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


This study aimed to investigate the effect of windscreen rake angle on effective transmittance and the contribution of spectacle lenses to the total transmittance of the system. heoretical analysis has been carried out using the Fresnel reflectance equations. Windscreen rake can reduce effective transmittance significantly at angles present on modern aerodynamic vehicles. Spectacle lenses reduce the total transmittance still further, often to below the minimum level permissible in current international standards for windscreens.

Original languageEnglish
Pages (from-to)1376-1379
Number of pages4
JournalOptometry and Vision Science
Issue number12
Publication statusPublished - 1 Dec 2009


  • optometry
  • vision sciences
  • spectacle lenses


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