Info
Info
News Article

Osram Black Flat LED Lights Up Roads

With a virtually constant light output even at high application temperatures, the III-nitride LED is suited to vehicle headlight applications
Osram Opto is marketing the Oslon Black Flat LED for automotive front lighting systems.

Equipped with state-of-the-art chip and packaging technology and a ceramic converter, this new LED product in the Oslon Black series is a high performance light source for automotive applications.



Oslon Black Flat LED

Osram says its latest product offers high light output even at high currents, uniform distribution of light, thermal stability and particularly good contrast for seeing and being seen.

The Oslon Black Flat LED had its premier as a prototype at ISAL 2011 and is available now.

Light sources for front lighting have to be multitalented. Not only do they have to illuminate the road ahead reliably in rain and fog and at night, they have to perform various functions as low beam, cornering lights and fog lights for example.

They also have to withstand high temperatures in the headlights. For these reasons more and more automobile manufacturers are opting for flexible, efficient and powerful LED technology.

With a high luminous flux even at high temperatures, the new LED contains a UX:3 chip that delivers high light output at high currents.

Osram says thermal management is much simpler with this new LED. This is thanks to the greater thermal stability of the luminous flux even under “hot" application conditions and also to a new temperature-optimised packaging process. This has meant that the typical thermal resistance has been reduced to 4 K/W.

The thermal coefficient of expansion of the black QFN package (Quad Flat No Leads) of the Oslon Black Flat LED is matched to the coefficient of expansion of the metal core board.

The Oslon Black Flat was developed in Regensburg and having been designed to function without a lens, its light can be injected very close to light guides or lenses. Osram says that its luminance, in other words what the human eye perceives as the brightness of a particular surface, is 2 to 5 times higher than comparable LEDs in its class at 70 -100 Mcd/m² (million candelas per square metre).

“This is particularly important in automotive frontlighting solutions based on projection systems", points out Peter Knittl, Director Automotive LED at Osram Opto Semiconductors. “The greater the luminance of the LED, the smaller the external lens and the smaller the space needed. Headlights can therefore be made much more compact, giving designers much more freedom."

Encapsulation of the chips directly in the package produces a defined light/dark boundary in the light pattern and, in conjunction with advanced package technology and the ceramic converter, a uniform distribution of light and particularly good contrast ratio on the road.

The benefits of Oslon Black Flat, above all its low thermal resistance and impressive performance under extreme conditions, have really struck a chord in the industry. Before the end of 2012 we will be seeing automobiles and motorcycles on the roads in which these small black LEDs will be performing the most important frontlighting functions", adds Knittl.

The LED measures 3.75 x 3.75 mm² and has a luminous flux of typically 200 lm at 700 mA at a Tj of 25°C and 270 lm at 1.2 A at a Tj of 100°C.

The luminous efficacy is 87 lm/W and the luminance is 70 - 100 Mcd/m² (millions candelas per square metre). Electrical thermal resistance is 4 K/W.

Lifetime as a function of the solder point temperature (Ts) of the L70B50 is 100,000 hours at 700 mA, at a Ts of 60° C and 10,000 hours at 1.2 A and a Ts of 120° C.

The Oslon Black Flat will be showcased at SIA-Vision, taking place on October 9th and 10th, 2012 in Versailles, France.



AngelTech Live III: Join us on 12 April 2021!

AngelTech Live III will be broadcast on 12 April 2021, 10am BST, rebroadcast on 14 April (10am CTT) and 16 April (10am PST) and will feature online versions of the market-leading physical events: CS International and PIC International PLUS a brand new Silicon Semiconductor International Track!

Thanks to the great diversity of the semiconductor industry, we are always chasing new markets and developing a range of exciting technologies.

2021 is no different. Over the last few months interest in deep-UV LEDs has rocketed, due to its capability to disinfect and sanitise areas and combat Covid-19. We shall consider a roadmap for this device, along with technologies for boosting its output.

We shall also look at microLEDs, a display with many wonderful attributes, identifying processes for handling the mass transfer of tiny emitters that hold the key to commercialisation of this technology.

We shall also discuss electrification of transportation, underpinned by wide bandgap power electronics and supported by blue lasers that are ideal for processing copper.

Additional areas we will cover include the development of GaN ICs, to improve the reach of power electronics; the great strides that have been made with gallium oxide; and a look at new materials, such as cubic GaN and AlScN.

Having attracted 1500 delegates over the last 2 online summits, the 3rd event promises to be even bigger and better – with 3 interactive sessions over 1 day and will once again prove to be a key event across the semiconductor and photonic integrated circuits calendar.

So make sure you sign up today and discover the latest cutting edge developments across the compound semiconductor and integrated photonics value chain.

REGISTER FOR FREE

VIEW SESSIONS

Info
×
Search the news archive

To close this popup you can press escape or click the close icon.
×
Logo
×
Register - Step 1

You may choose to subscribe to the Compound Semiconductor Magazine, the Compound Semiconductor Newsletter, or both. You may also request additional information if required, before submitting your application.


Please subscribe me to:

 

You chose the industry type of "Other"

Please enter the industry that you work in:
Please enter the industry that you work in:
 
X
Info
X
Info
{taasPodcastNotification}
Live Event