Stanley electric released automotive white LED headlamp sample

Stanley electric (Stanley Electric) recently exhibited the high power white LED for dipped beam and high beam headlights samples. Most of the current auto lighting manufacturers generally only in the use of white LED module, and then use the HID lamp light. In addition, TOYOTA and other white LED manufacturers also exhibited a white light source, such as the front facing LED, leaving the impression that the white LED module is moving toward high-power. All white LED module samples in the state of the optical lens with a diameter of about 30mm ~ 50mm, as the LED belongs to a larger variety.

2008 LED luminous efficiency will exceed HID lamp

The headlight of Stanley Electric is introduced with the German company Hella (Hella KG Hueck&Co.) joint development. The sample will be 4 large LED chip package into a high-power white LED module, this module is equipped with 5 headlights, in the last with 2. The light beam when the total of 700lm, according to reports "can ensure the brightness of HID lights just listed". Each white LED module emits a beam of about 140lm. The power consumed by the sample is 1.4 times as much as that of the HID lamp of the same brightness as that of the latter by a factor of 1.6. The increase in luminous efficiency of white LED has slowed in the past, but has recently regained momentum. Estimated before and after 2008 will reach and exceed the luminous efficiency of HID lamps, Stanley electric spokesman said.

Japan small silk production launch of the headlamp is equipped with 11 white LED module, including the 6, 5 additional high beam light. The light beam of 800lm ~ 1000lm. According to the running state, to control the LED module with the white light. For example, when driving at high speed, the central part of the 5 light, reducing the scope of the beam emitted by the front light, so that the light reaches the distance. In urban traffic, above the central part of the 1 lamp equipped with both sides of the 3 and the central portion with a white LED headlamp light module, enlarge the lighting angle. The front lamp also has the AFS function, and the central part of the headlamp is active in order to turn the light irradiation angle to the turning direction of the vehicle when the curve is running.

The energy conversion efficiency of the light source system is 65%

OSRAM launched a white LED light source for the headlights, equipped with a white LED module developed by the German OSRAM called "OSTAR". OSTAR is the 4 1mm square large LED chip packaging products together. The beam of each module is as high as 300lm. OSRAM uses OSTAR to produce a light source system that includes a power supply for the white LED module IC. When the system is powered up, the conversion efficiency can reach 65%. The back of the light source is equipped with a large heat sink, the cooling efficiency of the light source is also very high.

TOYOTA synthesis of white LED light source is also a large number of large LED chip package in 1 modules. The company is prepared to use 12 of this kind of light source prototype.

Practical time light white LED

At present, almost all of the concept cars used to guide the auto show are made of white LED headlamps. Not only is the production car with peculiar shape feel practical is very far, even as TOYOTA concept car Lexus brand flagship sedan launched LF-Sh and TOYOTA brand next-generation minivan concept car also equipped with white LED headlamps, let a person feel the practical is very close.

But in order to use the white LED as the main light source of the headlight, the corresponding legal amendment seems to be somewhat slow. The practical phase of the white LED headlamps will be pushed back to the point of view of the various companies in the exhibition hall heard many times. The United Nations Economic Commission for Europe to consider the headlight laws of "GRE" is estimated to be at the beginning of the year by the end of 2006 to 2007 to allow the headlight main light with white LED, but the time available even if the soonest dragged after the autumn of 2007. GRE allows the use of estimates, including Japan and other regions will also allow the use of white LED. A headlamp manufacturers said that if the GRE Committee held in the autumn of 2005 through, the amendments to the law in the autumn of 2007 and, if the Committee has not been passed, the period will be postponed to may from the autumn of 2007.