Sparks Electrical News August 2017

LIGHTING

22

MULTI–CHIP LED WITH LENS IMPROVES CAMERA FLASH APPLICATIONS

BATHROOM HEATING - WARM, BRIGHT AND STEAM-FREE

B athrooms 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. A high-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 energy efficient lighting 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 m 2 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- Enquiries: www.lightingwarehouse.co.za H elvar’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

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.

US STUDY PROVES VALUE OF ENERGY EFFICIENT LIGHTING

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 Building’, was funded by the U.S. Department of Energy’s Office of Energy Efficiency and Renewable Energy and the California Energy Commission 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.”

Enquiries: www.osram.com/os/

TUNABLE WHITE LED PRODUCTS

of two or more output channels by one common address.

Enquiries: www.advancedlighting.co.za

SPARKS ELECTRICAL NEWS

AUGUST 2017