相比较传统的卤素灯和氙气灯,LED具有独到的优势,如寿命长,发光效率高,响应速度快,体积小,设计可塑性强等.近几年来,LED已逐渐被应用在汽车前照灯中,尤其是在高端车型中.然而,与传统光源相比,LED车灯也有必须考虑的独特问题,光色性能便是其中一个重要方面.由于其本身发光特性以及温度影响,LED车灯极易出现颜色漂移以及空间颜色不均匀的现象,这些现象不仅仅会影响整个车体的外观,也会带来安全隐患.本文
The vehicle headlamp assessment of light shape is necessary for road safety.Traditional testing methods using a CIE A-α type goniophotometer cost enormous amount of time and money.In this study, a fas
Manual Headlamp leveling in automobile is a mandatory system in India for a light source having an objective luminous flux which is less than 2,000 lumens.The purpose of this standard is to avoid glar
The last decade has seen huge progress in terms of light sources, molding technologies and optical simulations.The Rear combination lamps are more and more part of the customer signature, and now even
Thanks to unique styling opportunities, high energy efficiency, long lifetime and dynamic features, LED headlamps have gained a strong position in the market.Further development is ongoing at fast pac
传统的汽车前照灯光学测量方法是将车灯固定于分布式光度计,或将车灯的光分布直接投到测试墙面上测试其空间光强和照度分布.此方法的缺陷是无法直观得到车灯光能量在路面的分布情况,必须通过照度和光强的转换得到路面的照度分布情况.而由于路面的反射特性并非完全朗勃散射,导致通过上述方法测得的照度分布数据和驾驶员看到的实际亮度分布存在不一致的状况.本论文探讨了采用面式成像亮度计测量路面亮度分布的方法.通过采用CC
An AFS algorithm simulating the drivers preview behavior was studied in this research.The drivers preview change rule was studied with eight male drivers at different speed and different road curvatur
Laser headlamps are close before their first introduction into real world traffic.But before they are going to be introduced into serial application Audis laser headlamps are used in motor racing for
The vehicular illumination system has undergone considerable technological advances in recent decades such as the use of a Light Emitting Diode (LED) and HID (high intensity discharge) lamps.However,