Change search
ReferencesLink to record
Permanent link

Direct link
Veiling glare in car windshields
2009 (English)Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

Veiling glare is the phenomenon when the dashboard or parts of the dashboard reflects into the windshield and creates veiling images. These images are both disturbing and impair the driver’s vision of the road scene. Cars are today more and more designed to have a "dynamic" expression with further raked windshields and the designers also wants to have the possibility to use lighter colors in the interior. This can lead to unwanted consequences in the form of an increased amount of reflections from the dashboard into the windshield. The goal with this thesis was to describe a measurable requirement that correlates with customer expectations together with different positions and angles of the light source, windshield and dashboard, material attributes of the dashboard and windshield characteristics like anti-reflective coating. The thesis work was carried out at the department of Human Factors Engineering and Ergonomics at Volvo Car Corporation, Gothenburg. There is an existing requirement that restrict the gloss and lightness of the instrument panel top surface. This requirement is valid at the specular sun angle (geometric relationship which creates a direct reflection from the light source into the driver’s eyes), which gives the gloss a much larger effect in the requirement compared to lightness. Volvo Cars has realized through own observations, that instrument top panel lightness plays an important role in the experience of veiling glare, particularly at high sun angles. Therefore Volvo Cars has created a complementing requirement that express a maximum lightness value based on a linear relationship tied to the windscreen angle. The problem is that it doesn't exist any linear relationships when the phenomenon veiling glare is examined further. In a laboratory environment a measuring method was developed to research the affecting factors of veiling glare at high sun angles. This work has been done through the use of several quality tools as Design of Experiment and Binary Logistic Regression. A subjective survey was performed to determine the customer acceptance for veiling glare at for different road scenes. The result from these studies was then combined to express maximum lightness value tied to geometrical properties between the windshield and the dashboard.

Place, publisher, year, edition, pages
Keyword [en]
Social Behaviour Law, Veiling, Glare, Windshields, Cars, Specular, Dashboards, Reflections, Anti-reflective, Coatings
Keyword [sv]
Samhälls-, beteendevetenskap, juridik
URN: urn:nbn:se:ltu:diva-58756ISRN: LTU-EX--09/009--SELocal ID: f51bfdd5-cea3-4055-a8c2-52795f8a7f23OAI: diva2:1032144
Subject / course
Student thesis, at least 30 credits
Educational program
Ergonomic Design & Production Engineering, master's level
Validerat; 20101217 (root)Available from: 2016-10-04 Created: 2016-10-04Bibliographically approved

Open Access in DiVA

fulltext(2882 kB)0 downloads
File information
File name FULLTEXT01.pdfFile size 2882 kBChecksum SHA-512
Type fulltextMimetype application/pdf

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

ReferencesLink to record
Permanent link

Direct link