1996-02-01

Headlamp Light Performance - Criteria for Customer Satisfaction 960790

In the last years the possibilities to design the light pattern of automotive headlamps have been increased drastically.
Headlamps are playing an important role in the design of a vehicle. Today there are various computer programms allowing a detailed layout of the light distributions, other than simple parabolic reflectors with a given light pattern.
The questions: where to put the extra light and: what is the ideal distribution of the light volume on the road have been raised quite often and where mainly discussed between experts in lighting. In this paper we report the results of a customer inquiry about the criteria of a good light pattern and the ratings of different light distributions given by some concrete examples. We will report the results by comparing the answers of different customers with the theoretical ratings.
In this paper we will concentrate on the application of low beam, the most important light function in night-time driving. With the given data we try to define criteria which will lead to customer satisfaction.

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