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TECHNOLOGY / LED
Product code Colour Temp (K)
General colour rendering index Ra
Input current (mA)
CL-L330-C26N-C 5000
Total Luminous Flux (lm) 2800 57
Luminous Efficacy (lm/W) 104 720
Thermal resistance (°C/W) 1.7 Size (mm)
Figure 13: OSRAMs new OSLON-150 beam angle LED in a tight array
streetlights.
NOVEMBER OSRAM: announce the OSTAR Lighting Plus providing a large amount of light from a small area. With its impressive brightness and colour stability this high-power LED can be used without any problems in retrofits for incandescent lamps or halogen lamps. It contains four chips fabricated in state- of-the-art UX:3 chip technology and emits either cold white or warm white light. The LED shown in figure 15 has an impressive brightness of 425 lm (5700 K to 6500 K) or 365 lm (2700 K to 4000 K) at an operating current of 350 mA. This corresponds to a typical efficiency of around 100 lm/W or around 80 lm/W. With a power draw of less than 5 W the warm white OSTAR version produces 365 lm – and from only four chips. Only four OSTAR Lighting Plus units are needed to replace a frosted 100 W incandescent lamp with a colour rendering index of 80.
Nichia: announce the release of a new line of high power point source white LEDs that drives the cutting edge technology of power LEDs to a new level. Code named under Nichia part number ‘NVSx219A’, or ‘Nichia 219’, the white LED offers typical 140 lumen output at 1W input power with 5000K colour temperature. Using a uniformly phosphor coated chip, Nichia 219 has the industry leading source brightness and tightest optical footprint. The spatial colour uniformity is also optimised with Nichia’s leading phosphor technology. At 350mA drive current, the typical forward voltage is only 3.0V. Additionally, this package is capable of drive currents up to 1.5A generating close to 475 lumens. To make Nichia 219 user friendly, Nichia has incorporated an electrically isolated heat sink in the LED design, and lowered the junction to board thermal resistance, while minimizing the package size to a mere 3.5mm x 3.5mm. The driver also offers
Product code Colour Temp (K)
General colour rendering index Ra
Input current (mA) L:28.0×19.0×H:1.4 Table 3: Technical specifications of the new 26W Citizen Array
CL-L340-C41N-C 5000
Total Luminous Flux (lm) 4390 67
Luminous Efficacy (lm/W) 105 900
Thermal resistance (°C/W) 1.0 Size (mm)
L:28.5×W:28.5×H:1.4 Table 4: Technical specifications of the new 41W Citizen Array
very good hot lumens performance with junction temperature >60C resulting in less than 7% thermal degradation compared to performance at 25°C.
Everlight: expands its LED portfolio and introduces the ‘Yi’ Series – a high power, high brightness and economic (superb $/lm) LED family with 5W power consumption. The Yi LED shown in figure 16 is a 4-chip device with very low thermal resistance as a result of the ceramic substrate. The series is a surface-mount high-power device featuring high brightness combined with a compact size (6x6x4.28mm) that is suitable for all kinds of lighting applications such as general illumination, indoor and outdoor lighting, retrofit bulbs, decoration, entertainment lighting, commercial lighting and automotive illumination. With the capability of 700mA driving currents, the Yi family can be driven up to 5 watts. The minimum luminous flux (lm) of the 5W Yi can be up to 400 lm at 6500K(CCT) or 325 lm at 3000K(CCT) when driven with 700mA current.
Cree: adds 80, 85 and 90 colour rendering index (CRI) options to its XLamp XP-G and XP-E warm-white LEDs. Many lighting applications, such as retail, medical and
architectural, require high colour accuracy to properly render object colours. With previous-generation high-CRI white LEDs, increasing colour quality meant decreasing efficacy; now, thanks to the new high- CRI XP-G and XP-E, luminaire and fixture designers can have both. The new high-CRI XP-G is available with luminous flux of up to 107 lumens at 350mA in warm white (3000 K), providing efficacy of 102 lumens per watt. Figure 17 shows the wavelength characteristics of the new high-CRI XP- G LEDs with the RED and Green content increasing with higher CRI.
Cree announce the commercial availability of new levels of performance for XLamp XP-E & XP-C Colour LEDs. The XLamp XP-E Colour LEDs are now available delivering minimum light output of 500 mW for Royal Blue, 39.8 lumens for Blue, 107 lumens for Green, 73.9 lumens for Red-Orange, and 62.0 lumens for Red, all at 350 mA. XLamp XP-C Colour LEDs are now available delivering minimum light output of 350 mW for Royal Blue, 23.5 lumens for Blue, 62 lumens for Red-Orange and 51.7 lumens for Red, all at 350 mA.
Cree also announces the commercial availability of the XLamp XM-L LED, the industry’s brightest, highest-performance lighting-class LEDs. The cool white (6500K)
CL-L340-MC41L1-C 3000 3060
83 73
CL-L330-MC26L1-C 3000 1960
83 73
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