LED modules from Sharp can replace 50W HID lamps
December 16, 2011 // Christoph Hammerschmidt
New LED modules from the new Mega Zeni series from Sharp reach an efficiency of up to 100 lm/W, a luminous flux of up to 4770 lm and are available with a (typical) CRI value of up to 93. They are thus one of the first industrial LED solutions to replace traditional 50W HID lamps.
The 50W Mega Zeni models from Sharp maintain the same dimensions and high CRI values, yet with considerably greater luminous fluxes. These have a luminous efficiency of between 3590 and 4770 lm, a light output of up to 100 lm/W in standard operating mode and a service life of 40,000 hours at an operating temperature of up to 90C. The new Mega Zeni modules are designed for a forward voltage of 50V and a forward current of 950 mA, but can also be operated with a standard power source of 1050mA. Other important features include: R9 values of over 85 with CRI values of over 90, MacAdam 3-step Ellipse binning, as well as good colour consistency and colour stability values over time under realistic operating conditions (hot lumen).
The 50W LED array launched by Sharp can thus replace traditional HID lamps in the same performance class. Compared to halogen lamps, the service life of 40,000 h of the LED array is notably longer and has a much lower decrease in brightness over time.
The serial and parallel array of the LED matrix ensures fail-proof operation while offering the lowest possible thermal emission. The flat surface of the ceramic plate and the soldering points already in place make it possible to attach the modules to a suitable heat sink without too much effort or additional connecting material, thus guaranteeing excellent heat dissipation. The electrical wiring also leads to lower thermal stress of the single LEDs, because the heat is evenly distributed and dissipated across the entire surface of the matrix. The round light emitting surface (LES) consists of a total of 160 LEDs, sub-divided into ten parallel-connected rows of sixteen. In the Mega Zeni series, this LES is fitted evenly with LEDs up to the edge, through which the optical design of a lamp can be considerably simplified. The formation of multiple shadows can be avoided, and at the same time it is easier to focus the optics (lens, reflector) on just one light emitting surface. The slim design of the new Mega Zeni, measuring just 24 x 20 x 1.8 millimetres, together with its small LES, also increases design flexibility, as it is possible to produce smaller optics and ultimately smaller lamps.All news
Winged parcel delivery: Google's way
August 29, 2014
While there is still debate as if legislation would ever allow swarms of commercial drones to fly over our heads, Google ...
Two-inch Super AMOLED display fits Samsung smartwatch plans
Dutch startup shrinks 60GHz radars, increases precision
Google glass: App measures facial expression
Forget iPhone: 4 megatrends in China’s smartphone market
Foldable AMOLED features interactive touch control
August 28, 2014
The first ever foldable AMOLED with on-cell touch has been unveiled by Taiwan's Industrial Technology Research Institute ...
Lantronix to fill digital classrooms' printing gap with PAL programme
Circular P-OLED display gives wearable device classic style
Smart bicycle to feature eCall, GPS tracking and scheduled maintenance
- How to Protect & Monetize Android Apps
- Building Blocks for the Internet of Things
- New Linear Regulators Solve Old Problems
- Testing GPS with a Simulator
InterviewCEO interview: Tronics' Langlois makes moves in MEMS
Pascal Langlois has been CEO at Tronics for nine months. He discusses plans for the company and directions for the complex and diverse MEMS technology sector.
Filter WizardCheck out the Filter Wizard Series of articles by Filter Guru Kendall Castor-Perry which provide invaluable practical Analog Design guidelines.
Linear video channel
READER OFFERRead more
This month, Altium Ltd is offering EETimes Europe's readers the chance to win one TASKING VX-Toolset for ARM Cortex-M Premium Edition, normally licensed for 2.395 Euros, for ultra-rapid prototyping and code development around ARM Cortex-M based microcontrollers.
The VX-toolset for ARM is the first TASKING compiler suite to receive the Software Platform technology, which is seamlessly...Read more
December 15, 2011 | Texas instruments | 222901974
Unique Ser/Des technology supports encrypted video and audio content with full duplex bi-directional control channel over a single wire interface.