Development of Light-Attenuating Devices (LADs) to Simulate Night Visibility during Daylight

摘要

To circumvent safety, evaluation, and logistics problems in nighttime training, ARI has developed light-attenuating devices (LADs) to simulate night visual conditions and allow daytime training. Both single-density and bidensity lenses have been developed for a variety of facemasks. This report documents ARI's role in developing and fabricating LADs and discusses potential applications for training. Using LADs to simulate night visibility for night training and testing may be more advantageous than actual night training for several reasons. First, safety: With single-density LADs, someone with full vision can monitor trainees' performance. Second, performance evaluation: Instructors working in daylight can better observe and evaluate trainees' performance. Third, convenience: Daylight is a more convenient time for many qualifications tests. (Author)