news digest ♦ LEDs
increased constant current of up to 440 mA to achieve a luminous flux of up to 1,650 lm. The 48 dies of the Mini Zeni of type GW5BxRxxK05 are divided electronically into a matrix of four parallel- switched series of twelve, which ensures fail-proof operation.
Tibbetts award winners are selected based on the economic impact of their technological innovation, and on whether they have met federal research and development needs, encouraged diverse participation in technological innovation, and increased the commercialisation of federal research.
Tiny Zenigata LEDs radiate up to 1550 lumens
Sharp’s new nitride LED modules from the new “Mini Zenigata” series offer an efficiency of up to 99 lm/W, a luminous flux of up to a typical 1550 lm and are available with a CRI value of up to 82
Sharp’s new Mini Zenigata arrays of type GW5BxxxK05 provide a luminous flux between 1150 and typical 1550 lm with a light output of up to 99 lm/W in standard operation.
Sharp says the round shape of the surface emitting light is also new in the 15 W Mini Zeni arrays. The circular LES has a diameter of 8 mm and is filled up to the edge of 48 LED dies. As a result, the new 15W Mini Zeni modules have properties like a high- performance, point light source, which only require simple optics (lens and reflector) unlike multipoint light sources.
Nothing has changed in the dimensions of the carrier made of aluminium oxide. At a compact 15 mm x 12 mm x 1.6 mm, the new Mini Zeni arrays are completely compatible mechanically with their predecessors.
The colour temperatures of the new white light LED arrays are in the range from 2,700 to 5,000 Kelvin with the shades “Natural White”, “Warm White” and “Pure White”. They are available in two models with CRI values of more than 80 and more than 90. The new Mini Zeni arrays also have high-quality R9 values, two binnings within MacAdam5 as well as good colour consistency and stability values over time under realistic conditions (hot lumen).
Thanks to the very smooth bottom side of the ceramic carrier and the already existing soldering points, the modules can be attached to an appropriate heat sink without a lot of work, ensuring excellent heat dissipation. The modules have a lifetime of 40,000 hours at an operating temperature of maximum 90° C. The light loss is also considerably less compared to conventional lamps and is only 70% after 40,000 operating hours.
The new 15 W Mini Zenigata LED arrays are suitable for numerous applications; they can be used in spot lighting and in LED retrofit lamps.
Line-up 15W LED lighting module “Mini Zenigata”
The new generation of the 15 W modules is specified for a forward voltage of 39 V with a constant current of 400 mA.
But you can also operate the 15 W arrays with 56
www.compoundsemiconductor.net June 2012
Samples are initially available in the colour temperatures of 3000 K and 4000 K. LEDisOne with Optogan enter Italian lighting
The German-based firm has opened a lamps and luminaires sales office in Varese, Italy, by signing a distribution agreement with the company LEDisOne
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