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JINLING Chen
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KIM Chen
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Subject: AUTOMOTIVE LED-AUTO LED
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2009-12-07 |
 The fourth-generation automotive light
sources are LED: LED is a semiconductor PN junction diodes, when a
forward bias when imposed on the PN junction at both ends, so that PN
junction system has been stimulated, carrier transition from the
low-energy state to a high-energy state, when the in the high-energy
state of instability in the carrier back to low-energy state complex,
in accordance with the conservation of energy of the original Li,
excess energy will be released as photons, it is the principle of LED
electroluminescence. It is not an object through the fever can heat up
and glow, is a direct conversion of light energy, emission wavelength
depends on the energy difference of carrier state and low energy states
that energy difference. As for the interior light source, the use of
LED growing number of cases, especially the auxiliary lighting of the
LED interior lights, as well as the instrument version of the LED
backlight and so on. LED auto lamps before the basic structure consists
of five parts: 1.LED array, 2. Reflective mirror, 3. With light
microscopy, 4. Radiator, 5. Drive circuit. LED auto lamps and LED light
sources are directly associated with the development, only when
technological advances LED lighting, LED light sources used in car
headlights only more popular. With LED the quality of the next LED will
raise prices, LED light source there will be another outbreak of
revolution in lighting, epoch-making significance, it will further
affect the car lights change.
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