Lightfair 2017: Making lighting design simple, smart, and beautiful

-May 15, 2017

Lightfair 2017 took place this year in Philadelphia from May 9-11 and EDN was there to catch the highlights. This year’s event had a stronger focus on the Internet of Things (IoT) with more vendors getting connected. Cree, for example, showcased its new connectivity dashboard that quantified the benefits of a connected building.

However, as the following pages show, Lightfair ranged from the quantitative and technologically innovative, to the pure art of lighting. The emphasis was clearly on making lighting design simple, smart, and beautiful.

See what you may have missed from Lightfair on the following pages and let us know what you think!

Bluetooth low energy mesh for 256 light nodes

Newman Chen, LinkCom’s director of North American operations, was very excited to be showing off proprietary Bluetooth low energy mesh software that allows up to 256 LED lights to be controlled from a smartphone, or from a wall switch. Bluetooth currently allows only seven to be controlled at a time, he said. However, working off Bluetooth 4.1, LinkCom has designed its own mesh software that raises that limit to 256. The smartphone app he used was very intuitive, and among other features, allowed user control of hue or dimming.

LinkCom also announced new members to its INCORE family of LED power supplies, including the 10-30-DTW (dim-to-warm) white-tunable, 30W, triac-dimmable series (seen at left above). The supplies have dual outputs: one is typically connected to an LED with a correlated color temperature (CCT) of 2700K and the other with a CCT of 6500K—with independent dimming control enabling dimming to closely emulate the characteristics of natural light.

The supplies are designed to fit inside the lighting fixture and so measure a relatively compact 95×57×28 mm. The units provide three-in-one dimming control, operating with either 0-10V, PWM, or resistor inputs. They cost $10 to $15, depending on quantity.

Increasing LED driver power density to 1400 W/in3

It’s a constant battle with physics to get drivers small enough to fit into light fixtures, yet have enough energy density to do anything useful without melting or breaking down. Seoul Semiconductor is tackling that problem head on and used Lightfair to show off its NanoDriver, a 16- to 24W LED driver measuring 13.5×13.5×1.42 mm. At 1400 W/in3, the company claims it is 10× the power density of what’s currently available. They may be right. It can drive LED fixtures at up to 2400 lumens.

Keith Hopwood, a veteran of the power and electronics industry and now executive vice president of Seoul Semiconductor, was so excited by what Seoul is doing, he signed up and moved to Seoul to work more closely with the team. The NanoDriver uses proprietary Acrich technology and looks like it will greatly reduce size, cost, and weight of LED driver circuitry. He showed how one design could be reduced from 68 components down to only a handful (see center of image above). Other key features include input voltages of 120 or 230V, an efficiency of 85%, a power factor correction figure of <0.9, low flicker of 10%, and a rated inrush current of <300 mA. Hopwood shares more details in the video below.

Loading comments...

Write a Comment

To comment please Log In