Electric efficiency of the lighting technology of auto industry: Recent development and future prospect

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Abstract
To meet the increased demand of flexible and technologically advanced lighting system, superior technologies are introduced in the automobile industry. Though initially candle was used for the lighting however lighting technology is now staying at a supreme level of advancement. In 1908 though electric bulb was started to use in the motor vehicle but specifically from 1920 electric bulb were started to use in the passenger car. Technologies like advanced front lighting system or active intelligent lighting system playing the key role to achieve this supreme advancement of automotive lighting technology. Tremendous improvement are achieved both on luminous efficiency and power consumption of the lighting system. Technologies like light emitting diode (LED), Halogen, Xenon made the vehicle lighting system more flexible and secure. Lighting system of vehicle plays the role of lighting, signalling and safety issue. Light emitting diode (LED) and Xenon bulbs are comparatively expensive than halogen bulbs however the efficiency of halogen is comparatively lower than that of LED/Xenon bulbs. To represent the identity of vehicle lighting system play the key role which is directly related to the vehicle safety. That is vehicle lighting system not only used only for illumination but also for vehicle safety. In this paper the technologies used in the vehicle lighting system are deeply reviewed and compared. Besides this comparative discussion of this technologies from economical perspective are done.

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