A very difficult problem exists regarding windshield shape, and that is to create a balance between aerodynamics and optical distortion. To assist in solving this problem, this study, concerning the characteristics of visual perception for the optical distortion when drivers receive visual information through a windshield, was carried out. In this study, the windshield area was divided into 4 zones from the viewpoints of the level of drivers' fixation frequency and types of objects observed. Distortion was defined as the gap angle ( distortion angle ), which crossed the lines of a grid board with and without a windshield, and distortion angles were measured on a total of 4 windshields. Four drivers indicated areas in each windshield in which they felt the area was distorted. As a result, the thresholds of optical distortion were shown as a function of the horizontal and vertical distortion angles by discriminatory analysis. In addition, it was suggested that the thresholds of optical distortion corresponded with visual contrast sensivity for the spatial-temporal frequency of stimulus luminance about which drivers felt distorted. Finally, we developed a CAD simulation program which enabled estimation of the optical distortion level using windshield shape data, and we used this to investigate effects of the windshield installation angle and driver's eye point on the optical distortion.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    A Human Factors Analysis of Optical Distortion for Automotive Windshields


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    International Congress & Exposition ; 1994



    Publication date :

    1994-03-01




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    A human factors analysis of optical distortion for automotive windshields

    Makiguchui,M. / Shida,T. / Sugiura,S. et al. | Automotive engineering | 1994


    A Human Factors Analysis of Optical Distortion for Automotive Windshields

    Makiguchi, M. / Shida, T. / Sugiura, S. et al. | British Library Conference Proceedings | 1994


    A new automatic optical distortion measuring system for automotive windshields

    Seto,S. / Nakashita,Y. / Uemura,K. et al. | Automotive engineering | 1994


    A New Automatic Optical Distortion Measuring System for Automotive Windshields

    Seto, S. / Nakashita, Y. / Uemura, K. et al. | British Library Conference Proceedings | 1994


    A New Automatic Optical Distortion Measuring System for Automotive Windshields

    Uemura, Ken / Makiguchi, Minoru / Seto, Shigeyuki et al. | SAE Technical Papers | 1994