A new, highly efficient curved reflex reflector is proposed to meet the requirement of EU ECE (Economic Commission for Europe) regulations based on the commercial design provided by an automotive company which has been in mass production. We used double pins with corner cubes which served as the building element of a SuperPin curved retro-reflector to enhance reflectivity performance. Our experiment outcomes indicated 46% higher retro-reflection efficiency and 33% larger working areas compared with the commercial design.
A highly efficient regular curved retroreflector is proposed to meet the requirements of the US Society of Automotive Engineers (SAE) regulations. It is demonstrated that 28% higher retroreflection efficiency and 33% more working area can be accomplished with the new designed retroreflector when compared with the commercial ones used in modern vehicles.Based on pin-bundling technology, the tooling of a reflex reflector mold can be produced, and it can serve as a testing sample or for mass production. In this study, a reflex reflector sample was designed and produced by bundled metal pins for SAE regulations. A curved retroreflector with new cube-corner structure is proposed and demonstrated. By use of genetic algorithms for optimization, the angles and positions of the pins serve as the optimizing parameters to enhance the performance of a curved retroreflector. Compared with conventional retroreflectors, it is found that 28% higher retroreflection efficiency and 33% more working area can be accomplished with our proposed one. effective working area and reflection efficiency are influenced seriously, and that could lead to the retroreflector not complying with SAE regulations [6,16].Based on pin-bundling technology, the tooling of a reflex reflector mold can be produced, and it can serve as a testing sample or for mass production. In this study, a reflex reflector sample was designed and produced by bundled metal pins for SAE regulations. A curved retroreflector with new cube-corner structure is proposed and demonstrated. By use of genetic algorithms for optimization, the angles and positions of the pins serve as the optimizing parameters to enhance the performance of a curved retroreflector. Compared with conventional retroreflectors, it is found that 28% higher retroreflection efficiency and 33% more working area can be accomplished with our proposed one.
A new LED rear light for automotives is proposed and demonstrated for EU ECE R07 regulation. The full rear light is a combination of a position lamp and a braking lamp, and LED light bars and micro-prisms are involved as their essential components. The micro-prisms are applied to homogenize the output of the rear light to decrease glare and accomplish EU ECE standard. Through experiments, it is shown that EU ECE R07 regulation can be met in the proposed rear light, and 12% (position lamps) and 26.5% (braking lamps) higher candela can be enhanced after the optimization of micro-prisms.
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