LEDiL AWARDED WITH THE TECHNOLOGY AWARD AT THE 20THANNIVERSARY CELEBRATION IN THE GUANGZHOU INTERNATIONAL LIGHTING FAIR 2015
The Guangzhou International Lighting Fair 2015 – one of the world’s largest lighting exhibitions visited from across the world – celebrated its 20th anniversary in Xinghai Concert Hall in Guangzhou on June 9th 2015. LEDiL was awarded in Alighting’s Award ceremony in technology category of its developments in RZ-technology.
VERSATILE AND COST-EFFICIENT COLOR MIXING WITH LEDiL RZ-TECHNOLOGYMixing of different colored LEDs is typically achieved with the use of mixing chamber i.e. white reflective chamber covered with diffusive translucent window. Mixing performance of the chambers is based on the random reflections happening inside the chamber. More reflections means better mixing of individual colors. Keeping in mind that in each reflection some light is lost, mixing chamber based designs typically have 15-25% losses on top of the optical losses.
To address this lower efficiency LEDiL has invented a special way of color mixing based on the controlled refraction of rays instead of random reflections. In LEDiL’s patented RZ-mixing technology color mixing is done by altering individual rays on the surface of special sublens. RZ-technology is best suited for use with typical reflectors, leading into a very efficient mixing of colors. With RZ-lenses, typical losses are caused by Fresnel losses and are of magnitude 5-8%. In practice this means that a mixing chamber based design having a luminaire flux of 1000 lm can achieve over 1150 lm output if converted into LEDiL’s RZ technology. This performance increase can be achieved without increasing LED flux or driving LEDs harder. RZ-surfaces also smoothen out the light, providing a smooth and visually pleasant beam appearance. Color mixing reflector based mixing optics are less expensive than comparable TIR-lenses and perform well when used on arrays constructed of multiple LEDs.
As of today, LEDiL’s full range of System Reflector families has dedicated RZ-sublenses available off the shelf. This includes hugely popular reflector sizes and families like 50 mm MIRELLA-family where each reflector version can be made color mixing by simply snapping MIRELLA-RZL lens in place. Other families that have color mixing RZ-sublens option are ANGELINA (82 mm) / ANGELETTE (110 mm) / ANGELA (120 mm) series and 70 mm BARBARA-PF reflector family. Each of the reflector families have a full range of beam angles available ranging from narrowest Spot distribution into Wide and even Extra Wide.