Sparks Electrical News August 2017

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SPARKS
ELECTRICAL NEWS AUGUST 2017
LIGHTING
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MULTI–CHIP LED WITH LENS
IMPROVES CAMERA FLASH
APPLICATIONS
BATHROOM HEATING - WARM, BRIGHT AND
STEAM-FREE
TUNABLE WHITE LED PRODUCTS
US STUDY PROVES VALUE OF ENERGY
EFFICIENT LIGHTING
OSRAM OPTO SEMICONDUCTORS is adding the new Oslux S2.1 to its portfolio for camera
flash applications. It combines two chips in different colour temperatures, a cold white chip
with 6000 K and a warm white chip with 2250 K (Dual-CCT), providing both a multi-chip
LED and a lens for the first time. This not only saves a work step but also produces excellent
results. With a maximum deviation of 300 K, the Oslux offers remarkable colour fidelity and
excellent colour uniformity across the target scene.
In video lights and camera flash applications, the integration of two LED chips and a silicone
lens on one PC board offers clear benefits for the customer. Now no separate step is necessary
for optimum positioning of the lens. This does not only save time but also optimises the use
of the generated light. While dimensions of 5.0 mm x 5.0 mm x 1.15 mmmake the Oslux S2.1
with its lens slightly higher than predecessor models, it requires less space on the board and
has a smaller exposed aperture than two single LEDs, making it impressively compact. The
silicone lens also allows this module to be reflow solderable, allowing the module to be easily
integrated into standard manufacturing flows.
“With the new Oslux S2.1 we were able to achieve very high quality. We have subjected it to
electrical and optically demanding testing and are happy with the results. It definitely meets
our high quality standards,” says FionaMak,product manager at OsramOpto Semiconductors.
The Oslux S2.1 is already available. Osram Opto Semiconductors is planning to release
an additional version, the Oslux S2.2, in early 2018. Instead of a silicone lens it will come
with an epoxy lens. Owing to the extremely hard material, the Oslux S2.2 can be installed
in mobile devices without a separate protective window, which provides additional industrial
design options. In addition, a spectrum optimised converter will provide the Oslux S2.2 with
even better photos.
Enquiries:
Bathrooms are functional spaces. It is important
therefore to have good sources of lighting and
air circulation. An excellent solution is to install a
bathroom heater-light-extractor unit, also known as a 3-in-1
combo unit.
Bathroom 3-in-1 units are all-in-one lighting, extractor and
heating solutions, which have been specially designed for
the hot, damp and humid conditions prevalent in bathroom
spaces. The 3-in-1 combo units available from The Lighting
Warehouse offer three functions in one unit – they come with
a built-in extractor fan for optimum air circulation, as well as
infrared globes that supply lighting and warmth. They are
rust-proof and purpose-built for steamy and wet areas.
The main advantage of bathroom 3-in-1 units is that they
offer three functions in one unit. Another benefit is that the
units are streamlined, space-saving solutions that require one
installation point to perform all three functions. As they are
recessed, the units cannot be installed in cement or concrete
ceilings, or vertically on the walls. The units come with a
special switch that allows individual operation and control of
each of the three functions.
Enquiries:
Helvar’s iC range introduces easy colour tem-
perature control, bringing human-centric lighting
where it is most needed.
Advanced Lighting System’s DALI driver configurator
sets LED module parameters for iC LED drivers to ensure
proper operation during colour and light intensity control.
The tool can also be used to configure other LED driver
parameters like output current.
Tunable white products help to mix warm and cool
white light and light intensity to mimic outdoor lighting
conditions (where morning light has a different colour
and intensity than midday light). This promotes feelings
of well-being and productivity for people who spend a
big part of their day indoors in artificial light, e.g. office
workers, school students, hospital patients, etc.
DALI’s colour control standard enables users to
choose a scene or colour, and intensity, in one step, vastly
decreasing programming time. The standard needs one
DALI address, which reduces the cost of a DALI lighting
system. The DALI type 8 (Dt8) commands enable control
of two or more output channels by one common address.
Enquiries:
Ahigh-rise office building in New York City has
proved that reducing energy usage by as much as
80% is easily achievable. Using advanced lighting
and automated shades, occupants on one floor were able
to reduce lighting energy usage by nearly 80 percent in
some areas.
The US Department of Energy’s Lawrence Berkeley
National Laboratory (Berkeley Lab) partnered with the
Building Energy Exchange (BEEx), an independent non-
profit organisation, to demonstrate that even in relatively
modern office buildings, installing the latest generation
of smart, actively controlled and
shading can dramatically lower energy costs and
enhance the quality of the work environment. Four sets
of technologies were tested on one 12 000 m2 floor of
the building.
T5 fluorescent lights were replaced by dimmable
LEDs with new sensors, which were adjusted throughout
the day using advanced controls depending on daylight
levels and occupancy of the space. Automated shades
were raised or lowered to open up views to the outside,
admit daylight, or reduce glare as needed. Researchers
monitored the effects of the retrofit for six months,
following a year-long baseline monitoring period before
the upgrades were installed.
They found that energy use for lighting declined by
79% and peak lighting electricity demand went down by
74 percent%. Heating and cooling did not form part of the
study, but the researchers have estimated that a building-
wide retrofit would have provided massive electricity
savings.
The study, entitled ‘A Post-occupancy Monitored
Evaluation of the Dimmable Lighting, Automated
Shading, and Underfloor Air Distribution System in
The New York Times , was funded by the U.S.
Department of Energy’s Office of Energy Efficiency
and Renewable Energy and the
through its Public Interest Energy
Research Program. Located near Times Square in New
York City, the 52-story building has almost a million
square metres of commercial office space.
According to the research, by combining smart design,
efficient technology and properly integrated building
systems, starting with design and moving to construction
and commissioning and into operations, office buildings
in an urban environment can deliver measured energy
performance substantially surpassing energy codes.
“We aggressively pursued innovative designs to
improve the quality of the workplace for our employees
and to reduce energy use and other operating costs of our
facility,” Angelo Salvatore, executive director of building
operations at the Times Company, the organisation on
whose premises the study was conducted, told media.
“The outcomes of this study confirm that we were
successful. More importantly, our hope is that the
energy efficient measures and designs documented in
this independent study may inspire other companies’
workplace designs.”