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junction temperature of 85°C.
LG said it achieved the performance
of the H35C4 through a vertical LED
architecture and an optimized mixing process in the phosphor materials
that create the white light. The vertical characterization implies a flip-chip approach in which the emitting
surface was originally adjacent to the
The new LG packaged LEDs also
come with LM-80 test data and long
rated lifetimes. The company said
the test data suggest a life of 150,000
hours and that the phosphor formulation and application technology is also
key to the long life. ◀
http://bit.ly/1kd T3t T
LG from page 7
Erco Grasshopper luminaires with a narrow 6° beam pattern. The narrow spot beam
places the lights precisely on the architectural details while eliminating light pollution that could spoil skyline views.
The building also features a crown structure that includes four spires that were damaged but replaced when the building was
refurbished using the original drawings of
the architect. Kugler Ning installed 20W
Erco Lightscan projectors with a 6° beam
pattern for the spire lighting.
The result of the design is a building that
Erco says appears “sculptural.” The lighting
creates an interplay of light and shadows with
subtle grazing. And the design team specified
the project with the mandate of creating no
glare. The projectors do not spill light onto
balconies or into windows. Moreover, the
small luminaires are attached to the building walls but blend into the architecture. ◀
LEDS & SOURCES
Osram Opto demonstrates
five-emitter LED for
Osram Opto Semiconductors has demon-
strated a prototype of a new Oslon Black
Flat S LED for automotive headlamp appli-
cations at the International Symposium
on Automotive Lighting (ISAL) 2015 event
in Darmstadt, Germany. The five-emitter
packaged LED can be the sole component
in combined low- and high-beam headlamp
systems delivering up to 2000 lm, and can
be used to achieve glare-free adaptive head-
lamp designs with each emitter being inde-
pendently driven. The LED will be commer-
cially available next year.
The new prototype LED demonstrates
the performance upgrade path of the Oslon
Black Flat family and the advancements are
coming primarily in the thermal area.
Osram said the new version will use a
slightly larger surface-mount device (SMD)
package that measures 3.75× 7.0 mm. The
thermal connection has been enhanced by
larger contact pads that will enable passive
cooling of the LED. The thermal design will
thereby reduce the system cost and make
LED-based headlamps more cost competitive with HID options.
The five emitters provide many options
for product developers in realizing com-
pelling headlamp designs. In cases such
as the US where low and high
beams are required, a single
packaged LED can implement
both ( http://bit.ly/1JjD5nx).
In regions that allow adaptive
headlamps and functionality
such as the Audi Matrix design
( http://bit.ly/1qtZK7k), the individual control of the emitters will enable
Erco from page 7