132
TECHNOLOGY / LED
Figure 2: Schematic of Xicato’s proprietary module technology
• The range has a CRI (Colour Rendering Index) of Ra over 95, including almost perfect rendering of deep reds that the lamp industry has until now found problematic. • The range develops Xicato’s goal of providing LED based lighting with all intrinsic energy and longevity benefits of LEDs but with no compromises. It is a genuine halogen equivalent, and as such ideally suited for retail, domestic, hospitality and gallery / museum applications. • Furthermore Xicato’s Corrected Cold Phosphor Technology (shown in figure 2) ensures that colour points centred on the Black Body Locus for a perfectly natural light are maintained to a 2 step MacAdam ellipse tolerance, part to part and through life. Three CCTs (Correlated Colour Temperatures) are available: 2700K, 3000K and 4000K. • The Artist Series has also been optimised to get excellent results for the more saturated and skin colour samples of the CRI reference set. For the deep red R9 reference sample, a value of R9 over 90 has been achieved for the 2700K and 3000K Artist Series, and the same R9 is over 85 for the 4000K Artist Series. These numbers not only outperform other LED solutions but also traditional lamp types like compact fluorescent and compact metal halide. For the R10 to R14 CRI reference samples the average of R10-R14 is over 95 for the 2700K and 3000K modules, and over 92 for the 4000K modules. For the R15 reference sample, which is representative of Asian skin tones, a value of R15 over 95 is obtained. • The Artist Series modules produce 700 lumens when run at 700mA - wattage in this case is of approximately 20W.
Seoul Semiconductor: launches the newly improved Acriche A4 AC driven LED emitter to 100 lumens per watt for its cool white version and 90 lumens per watt for its warm white product.
Sharp: introduces the MiniZeni series of LED arrays that produces up to 410 lumens in just 6.7 watts with dimensions of 15 x 12 x 1.6 millimetres. The new models are available in two series: a 6.7W and a
3.6W series with the 6.7W consisting of a total of 45 LEDs that are arranged in fifteen parallel-switched series of three. The matrix of the 3.6W emitter consists of a total of 24 LEDs that are arranged in eight parallel-switched series of three and achieve a luminous flux of up to 230 lm. The benefit of multi-chip LEDs, compared with the large-scale single-chip LEDs with approximately the same luminous flux, lies in their homogeneous distribution of heat. The colour temperature of the three white light LED lighting modules lies in the range of 2,700 to 5,000 Kelvin with the shades ‘Warm White’ and ‘Pure White’. The models of the ‘MiniZeni’ series have a substantially improved CRI value of 87, thanks to various phosphorous mixtures, and thus ensure colour fastness and attention to detail.
MARCH Cree: announce the commercial availability of the award-winning XLamp XP-G LED in warm- and neutral-white colour temperatures (2600K to 5000K CCT). These new XP-G LEDs shown in figure 3 extended Cree’s highest level of light output and efficacy across the white colour spectrum, driving general lighting applications such as LED replacement lamps, outdoor area and commercial luminaires. The warm white (3000K) XP-G provided up to 114 lumens and 109 lumens per watt at 350mA. Driven at 1.0A, the XP-G warm-white produces up to 285 lumens at 84 lumens per watt, which is four times the light output than the highest available XR-E warm-white LED at equal efficacy.
The neutral-white (4000K) XP-G provided up to 139 lumens and 132 lumens per watt at 350mA. Driven at 1.5A, the XP-G neutral- white produces up to 463 lumens, which is four times the light output of the XR-E cool- white LED at equal efficacy.
Cree also expand its family of high-power colour LEDs with the availability of XP-C colour LEDs in royal blue, blue, green, amber, red-orange and red. These new XP-C LEDs are 10-to-50 percent brighter than Cree’s previous midrange colour LEDs. The XP-C colour LEDs are designed for 0.5 watt to 1 watt operation.
Epistar: announces it has successfully
Figure 3: Cree’s XP-G Neutral White LEDs
developed its PX series of AlGaInP LEDs with record-breaking efficacy of 133lm/W driven at 20mA, while the power chip in the same series reaches 110lm/W at 350mA. This outstanding performance makes the small chip a preferred choice for outdoor display and RGB Backlighting applications whilst the power chip, with its good CRI and high efficacy, becomes an excellent solution for warm white lighting.
APRIL
Bridgelux: The Bridgelux Array platforms are demonstrated within the Helieon module designed for high light output applications including retail, street, wide area, high bay, and commercial lighting. The Helieon lighting system is the first plug-and-play, sustainable solid state lighting module to integrate high-efficiency precision lighting with an easy-to-use socketed solution to accelerate innovation and enable the mass adoption of solid state lighting. The Bridgelux arrays are used by Manor Group to replace 50W halogen light sources in their Zurich store whilst reducing energy consumption by over 50%. The Heieon modules offer uniform high- quality illumination with beam control optics (24, 32 and 50 degree options), High system efficacy enabling luminaires with operating efficiencies of >50lm/W and colour control to a single 3-step MacAdams ellipse.
Cree: announces a breakthrough new lighting-class LED platform, the XM LED. This new single chip LED delivers record- breaking efficacy of 160 lumens per watt at 350mA. The LED also delivers 750 lumens at 2A, which is equivalent to the light output of a 60W incandescent light bulb at less than 7 watts. The thermal resistance of the XM platform is 2°C per watt — an industry- leading technology breakthrough and a 350 percent improvement over Cree’s flagship XP-E LEDs.
Seoul Semiconductor: exhibits the latest Acriche A4 at Light+Building that has a luminous flux of 83 at a power of 0.83W and a CCT of 6300K providing a 100 lm/W efficacy. The new Acriche A4 uses a different type of manufacturing process from previous A3 emitters and overcomes
Page 1 |
Page 2 |
Page 3 |
Page 4 |
Page 5 |
Page 6 |
Page 7 |
Page 8 |
Page 9 |
Page 10 |
Page 11 |
Page 12 |
Page 13 |
Page 14 |
Page 15 |
Page 16 |
Page 17 |
Page 18 |
Page 19 |
Page 20 |
Page 21 |
Page 22 |
Page 23 |
Page 24 |
Page 25 |
Page 26 |
Page 27 |
Page 28 |
Page 29 |
Page 30 |
Page 31 |
Page 32 |
Page 33 |
Page 34 |
Page 35 |
Page 36 |
Page 37 |
Page 38 |
Page 39 |
Page 40 |
Page 41 |
Page 42 |
Page 43 |
Page 44 |
Page 45 |
Page 46 |
Page 47 |
Page 48 |
Page 49 |
Page 50 |
Page 51 |
Page 52 |
Page 53 |
Page 54 |
Page 55 |
Page 56 |
Page 57 |
Page 58 |
Page 59 |
Page 60 |
Page 61 |
Page 62 |
Page 63 |
Page 64 |
Page 65 |
Page 66 |
Page 67 |
Page 68 |
Page 69 |
Page 70 |
Page 71 |
Page 72 |
Page 73 |
Page 74 |
Page 75 |
Page 76 |
Page 77 |
Page 78 |
Page 79 |
Page 80 |
Page 81 |
Page 82 |
Page 83 |
Page 84 |
Page 85 |
Page 86 |
Page 87 |
Page 88 |
Page 89 |
Page 90 |
Page 91 |
Page 92 |
Page 93 |
Page 94 |
Page 95 |
Page 96 |
Page 97 |
Page 98 |
Page 99 |
Page 100 |
Page 101 |
Page 102 |
Page 103 |
Page 104 |
Page 105 |
Page 106 |
Page 107 |
Page 108 |
Page 109 |
Page 110 |
Page 111 |
Page 112 |
Page 113 |
Page 114 |
Page 115 |
Page 116 |
Page 117 |
Page 118 |
Page 119 |
Page 120 |
Page 121 |
Page 122 |
Page 123 |
Page 124 |
Page 125 |
Page 126 |
Page 127 |
Page 128 |
Page 129 |
Page 130 |
Page 131 |
Page 132 |
Page 133 |
Page 134 |
Page 135 |
Page 136 |
Page 137 |
Page 138 |
Page 139 |
Page 140 |
Page 141 |
Page 142 |
Page 143 |
Page 144 |
Page 145 |
Page 146 |
Page 147 |
Page 148 |
Page 149 |
Page 150 |
Page 151 |
Page 152 |
Page 153 |
Page 154 |
Page 155 |
Page 156 |
Page 157 |
Page 158 |
Page 159 |
Page 160 |
Page 161 |
Page 162 |
Page 163 |
Page 164 |
Page 165 |
Page 166 |
Page 167 |
Page 168