Methodology to Evaluate Automotive Lamp Venting

Automotive lamps are vented to the environment to reduce pressure differentials and provide a pathway to reduce lamp moisture vapor and eliminate condensation. Many venting products are available for use in any lighting application. Price and performance are major considerations in choosing the best vent system. This paper will present the methodology to characterize the moisture vapor diffusion performance of automotive vents. After performance characterization is known, application of the optimal venting product can be identified and design possibilities simplified for the lighting designer.