OSRAM Opto Semiconductors LED Light Site January 2014 Newsletter 

Happy New Year from all of us at OSRAM Opto Semiconductors, wishing you the best and brightest year ahead!  This issue contains information on our latest LED with new conversion technology, an interesting story on how LEDs are helping preserve ancient artwork and a summary of our slidecast on the versatile DURIS family of LEDs.

LED Lighting Trivia
When light meets a surface, it can do one of five things. We'll give you two, you give us the rest: total internal reflection (TIR) and reflection.
  
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Featured Product

OSRAM launches LEDs that offer longer life at higher temperatures

OSRAM Opto Semiconductors optimizes heat dissipation of OSLON Square, leading to lower lighting costs

Excessive heat generation is one of the main reasons why light-emitting diodes fail. With the OSLON Square, OSRAM Opto Semiconductors presents an LED that withstands high ambient temperatures. To ensure that the color point of each LED in a luminaire remains uniform even at higher temperatures, they are measured and binned at 85 degrees Celsius (� C). This temperature comes very close to that encountered in lighting applications in buildings, in everything from spotlights to retrofit light sources.

OSRAM has optimized the heat dissipation of the OSLON Square to allow an increase in the junction temperature.  With that, the OSLON Square can reach a lifetime of more than 50,000 hours, even at high temperatures up to 135� C in the LED.  Due to higher permitted junction temperatures, fewer large heat sinks are required, simplifying the design of lamps and luminaires because they can be smaller and, therefore, less costly.

"With our new conversion technology, we can produce significantly thinner converter layers. The thinner layers better dissipate the heat, thus enabling the higher temperatures in the LED," said Marc Dyble, SSL Product Marketing Manager at OSRAM Opto Semiconductors, explaining the advantages of the innovative technology.

Customers benefit from the properties of the new OSLON Square

Measuring and binning at operating temperatures of 85� C is significant to customers who further process LEDs into luminaires. Customers receive precise information on parameters such as luminous flux or color stability, which is needed to optimally define the properties of their products.

Furthermore, the improved temperature behavior leads to higher luminous efficacy in the application. "This luminous efficacy, which is the ratio of luminous flux to applied electrical power, helps our customers significantly optimize the price/performance ratio of their luminaire solutions," Dyble said.

Application in interior lighting

The OSLON Square is particularly suitable for various building applications. With a color temperature ranging between 2400 and 5000 Kelvin, the LED can generate either warm- or cold-white light. The color rendering index is over 80 and the luminous flux is 202 lumens (lm). Product variations with a different color temperature spectrum and higher color rendering indexes are to follow.

Currently, the new LED is undergoing extensive quality testing and the certification process under the LM-80 long lifetime standard is in progress. The results of the 3,000 hour test are expected at the end of the year, and the results of the 6,000 hour test are expected in spring 2014

 

Technical data (GW CSSR M1.EC) - All data at a junction temperature of 85 �C

Housing dimensions
3 mm x 3 mm
Beam angle

120

Typical voltage (at 700 mA)
2.9 V - max. 3.2 V
Current
max. 1.8 A (previously 1.5 A)
Typical brightness (at 700 mA)
~ 202 lm (at 3000 K)
Color rendering index (CRI)
min. 80
Thermal resistance Rth
3 K/W (previously 3.8 K/W)
Color temperature
2400 - 5000 K

 

Cick here for more information on OSLON Square

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News

Light means quality of life - the biological effects of light

Light can be invigorating, motivating, relaxing or calming. Light can also provide support for medical treatment, promote levels of concentration at work or in schools and also enable passengers on long-distance flights to relax. A wide spectrum of knowledge concerning the biological effects of light has been scientifically verified in studies. This expertise has already been implemented in reality in initial projects.

Lighting solutions from OSRAM exploit the positive effects, and as part of coordinated lighting design promote concentration, well-being and quality of life

But how does the biological effect of light really work? What are we able to observe as people, and what do lighting designers, architects and engineers have to take into account in the future for lighting design in their own homes, places of work and public buildings? Our online special details the knowledge gained from research, science and projects for increasing our levels of well-being.

Click here for our online special on the biological effects of light

  

 

True art: LED lighting in museums

Lighting solutions for museums present a special challenge because the artificial light has to be gentle enough to protect works of art from long-term damage. The lighting also has to display the exhibits in their authentic colors. LEDs are ideal for meeting these requirements and are being used more and more for museum lighting.

Light and heat constitute the greatest potential threats to works of art. Professional LED lighting provides pleasant high-quality light that is gentle on materials so it perfectly meets the needs of museums. In contrast to natural daylight and thermal radiators, light emitting diodes produce low UV radiation and minimal infrared radiation. Other benefits include long lamp life, high energy efficiency and enormous flexibility because the light can be easily adapted to individual circumstances either optically or electronically.

For works of art to be viewed properly a certain brightness is needed on the surface. Standard illuminance levels in museums is around 50 to 200 lux, depending on the exhibit. New LED technology enables the most sensitive objects to be illuminated now with 70 lux and more, instead of 50, without suffering any damage. The light color is also significant in a museum setting. At the illuminance levels that are usual in a museum the preference is for warm white to neutral white light colors (2500 to 4000 Kelvin) because this is the type of light that visitors find most pleasant. The lighting must also be such that the visitors are not disturbed by glare. Visible light sources or strong points of light in their field of view detract their attention and are considered highly annoying. Often, an effort is made to adjust the artificial light according to the time of day - from a reddish hue in the morning to bright daylight at midday and then another reddish hue in the evening. This requires the lighting systems to be equipped with supporting optics and intelligent electronics. Another important aspect of museum lighting is the value of the color rendering index (CRI) because the colors of the exhibits should be displayed as naturally as possible.

A special challenge: light for the works of Michelangelo, Kandinsky and co.

To mark the 150th anniversary of the Liberation Hall in Kelheim, Germany, the city's Archaeological Museum presented 60 original construction plans by the architects Friedrich von G�rtner and Leo von Klenze. 70 LEDTOUCH Tracklight luminaires with high-power light emitting diodes from OSRAM Opto Semiconductors were installed to master the enormous challenge of lighting these graphic objects. They create a bright room without causing any damage to the precious exhibits. To avoid the high cost of installing a completely new system the new OSRAM luminaires were incorporated directly in the museum's existing track system.

The Municipal Gallery in the Lenbachhaus in Munich contains works of art by famous painters such as Wassily Kandinsky. Based on specifications submitted by the Munich city authorities, engineers and scientists at OSRAM developed a modern lighting solution. Each room is decorated in a color appropriate to the works of art, and the light colors can be set accordingly between 3000 and 6.000 Kelvin. More than 170,000 light emitting diodes and an intelligent lighting control unit can produce almost 100 different color and dimming nuances, changing from the warm white light of the morning glow to the cold white light of the midday sun. Dimming is completely flicker-free and the light has excellent color rendering properties.

In the Sistine Chapel in Rome, OSRAM is installing an LED lighting system designed to illuminate the world-famous works of Michelangelo without causing any damage to the sensitive materials. The new installation will provide a much higher illuminance than before. Compared with the current system, it will also consume 60 percent less power. Around 7,000 OSRAM OSLON SSL LEDs from OSRAM Opto Semiconductors will be used. Scientific calculations have been carried out so that the color spectrum of the light emitting diodes is accurately adapted to suit the color pigments in the works of art. The light will be precisely directed to create uniform illumination without blinding the visitors. To ensure that the light comes from the same direction as natural daylight the luminaires are being installed out of sight underneath the windows on cornicing.

 

Web Features

New Printed Circuit Board Design for DURIS S 5

Free gerber file for a popular LED
 

A new gerber file for the DURIS S 5 LED has been added to our Printed Circuit Board Design Page.  This design file is for a standard metal core star board that can be used for testing and prototyping purposes on multiple LED applications with DURIS S 5 LEDs.  DURIS S 5 LEDs are offered in three different versions: optimized for cost (GW PSLLS1.EC), optimized for efficacy (GW PSLMS1.EC) and flux (GW PSLPS1.EC).  Having the same footprint for all versions provides the flexibility to use the same board to evaluate all versions at the same time. This board is ideal for testing and prototyping of applications that require higher flux, but have tight spacing requirements.

Our printed circuit board design files, with various standard designs (gerber files), are available to download for FREE. The downloads can be used for prototyping and proof of concept for complex designs with various shapes (linear boards, star boards, etc.) and different OSRAM Opto Semiconductors LED footprints. If you don't have a gerber viewer, you can download the Free ViewMate Gerber Viewer from Pentalogix from our web page.  By utilizing these free tools, you will be able to download the gerber files, view mechanical dimensions and purchase LEDs compatible with the boards.  Our Tools page is a one stop shop for free online tools for general lighting LEDs that can be accessed 24/7.

Check out our printed circuit board design files now           

 

Explore the DURIS Family of LEDs

Our latest slidecast is available now on the extremely versatile LED family with a variety of low, mid and high power products

The slidecast is a product overview of OSRAM Opto Semiconductors' DURIS family of LEDs for general lighting applications.  Whatever your application needs -- the DURIS family can meet them. For example the DURIS E, is the perfect solution for cost-conscious applications. The DURIS P 5 and DURIS P 5 colors are ideal for high-quality, professional indoor and outdoor lighting applications. DURIS S 5, the mid-power LED, stands for flexibility and efficiency. And DURIS S 8 is a revolutionary compact high-power LED for indoor illumination, including directional and omnidirectional retrofit lamps.              

DURIS Family of LEDs by OSRAM Opto Semiconductors

 

 

 

 

 

 

 

 

View additional helpful videos here

              

Free DURIS S 8 Samples

OSRAM Opto Semiconductors is setting new standards once again: DURIS S 8 is a revolutionary compact high-power LED for indoor illumination, including directional and omnidirectional retrofit lamps. With high luminous flux out of only one small LED package, high forward voltage and high color consistency, it provides totally new opportunities for all indoor lighting, especially directional retrofit applications.  Now you can order a free sample to experience this revolutionary LED for yourself. 

  

  

  

 

Click here to order your DURIS S 8 sample today

Click here for more information on DURIS S 8 

Featured Video
OSRAM-OS LED FUNDAMENTALS Optical and Lighting Software

In this LED Fundamental we look at the differences between optical and lighting software, when each type of software should be used and appropriate light source models for each software type.

 

 

 

 

 

 

 

 Click here to see all of our LED Fundamental videos   

Infrared and Visible LED Newsletter

TOPLED Black

High-contrast LEDs for improved readability

The TOPLED Black from OSRAM Opto Semiconductors is a range of low power LEDs mounted in a black standard package. The black package offers significantly higher contrast with lower reflectivity than comparable white-package devices but with outstanding intensity. This makes the TOPLED Black ideal in display applications where contrast is key, especially in high ambient light conditions.

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Upcoming Events

Strategies in Light 2014

February 25 -27, 2014

Santa Clara Convention Center             

Santa Clara, CA

http://www.strategiesinlight.com/index.html 

Come visit OSRAM Opto Semiconductors in booth 305!

 

Expo Lighting America 2014

February 26 - 28, 2014

Centro Banamex Exhibition Centre

Mexico City, Mexico

http://www.e-la.mx/english/

 

LEDucation 8

March 18 - 19, 2014

Sheraton NY Times Square Hotel

New York, New York

http://leducation.org/

OSRAM Opto Semiconductors | [email protected] | http://ledlight.osram-os.com
1150 Kifer Road
Suite 100
Sunnyvale, CA  94086

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