Optical Near Field Measurements and Ray-Tracing Simulations of Coated and Uncoated Halogen Lamps for Glare Analysis Osram Sylvania Incorporated

Format:

Conference/Event

Author/Creator:

Tessnow, Thomas, author.

Conference Name:

SAE 2003 World Congress & Exhibition (2003-03-03 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2003

Summary:

Automotive lamps for headlights are constantly reevaluated for causes of glare issues. Lead wires, glass, sockets and even filaments reflect and/or scatter the light from the filament into undesired directions, possibly causing glare. The best way to account for scattered light in the design process is to measure the near field radiation pattern. A high-resolution camera on a goniometer is used to characterize the headlamp. The results are further analyzed in an optical ray-tracing package. This paper will look at the new double filament lamp (H13) in respect to glare as well as the effect of "cool blue" absorption coatings. Measurements of the emission patterns of the lamps with and without coating are compared. A ray-tracing model will simulate the effect of the coating and amplify the effect to determine how much increase in scattering is necessary to cause a glare problem. The goal is to show that the measured effect of absorption coatings on lamps is too small to cause glare

Notes:

Vendor supplied data

Publisher Number:

2003-01-0929

Access Restriction:

Restricted for use by site license