详情

原文传递 Advanced Photonics Technology for Transportation Security and Safety.

题名：	Advanced Photonics Technology for Transportation Security and Safety.
关键词：	Photonics-; Road-striping; *Headlights-.;Incandescent-headlamps; Phosphors-; Light-emitting-diodes; Ultraviolet-light.
摘要：	The project continued its focus on two technology areas related to heavy vehicle safety and improved performance: use of long-persistence phosphors (LPPs) in highway and road striping, and inclusion of ultraviolet illumination to headlight configurations (specifically, ultraviolet light-emitting diodes (UV LEDs)) to improve visibility. Test samples of three types of LPPs in stable acrylic matrices were used in conjunction with standard white striping paint and compared to striping paint samples without LPPs in these stable matrices. The LPP samples in the stable acrylic matrix showed minimal deterioration with over eight months of weathering, while LPP mixed directly in striping paint was seriously deteriorated. In addition a UV LED array containing sixty individual LEDs, combined with an incandescent headlight, was found to produce noticeable fluorescence effects within the lighted area when pulsed by a 12-VDC power source. These results have taken us beyond the feasibility stage to a point that next steps in the technology development would concentrate on commercialization issues.
报告类型：	科技报告