Recently in Automotive LEDs Category
The Institute of Transportation Engineer's Future Directions Advisory Committee (FDAC) was appointed to identify and consider the trends and issues facing the Institute and the transportation profession. The FDAC gathered and reviewed information on transportation issues and identified trends:
- continuing increase in demand for transportation;
- Population increases and urbanization increase traffic flows
- traffic congestion;
- Progarmmable controllers and LED lights can improve communications and monitor/measure and adapt to traffic congestion
- transportation programs to help meet air quality and energy goals;
- Think saving energy, reducing greenhouse gases and reducing wasted mileage on the streets
- greater mix of revenue sources for transportation;
- Think BLUE LEDs on traffic signals to identify traffic violations!
- federal government setting the direction for transportation programs;
- Think funding...and ubiquitious traffic communications for tourism and travelers
- operations and demand management taking precedence over increasing capacity;
- Less is better...especially vehicles on the road. Less oil consumption, less congestion, less accidents, less infrastructure costs...
- intelligent vehicle highway systems
- Programmable systems adapt to changing conditions and can even be predictive and take immediate steps to reroute traffic, etc.
The "Night-time Awareness - Auxiliary Lighting" bill unanimously passed through the Maryland Senate and the House in April 2008. This Motorcycle lighting legislation enables the front, rear, and sides of bikes to be illuminated using non-outwardly projecting lights. The bill was publicized to raise awareness for the National Highway Traffic Safety Association's motorcycle awareness week.
"Most motorcycle accidents involving another vehicle, they are almost always the fault of the other vehicle, and usually the comment of the other vehicle is, we just didn't see him."
Police Sgt. Dave Ennis adds that "Anything that adds to the visibility of the rider, I think is a move in the right direction."
LED Indicators and signs
Status indicators on a variety of equipment are used which include traffic lights and signals, Exit signs, Railroad crossing signals, Continuity indicators and Elevator push-button Lighting .
Thin, lightweight message displays at airports and railway stations, and as destination displays for trains, buses, trams, and ferries.
Red or yellow LEDs are used in indicator and alphanumeric displays in environments where night vision must be retained: aircraft cockpits, submarine and ship bridges, astronomy observatories, and in the field, e.g. night time animal watching and military field use.
Red, yellow, green, and blue LEDs can be used for model railroading applications
In dot matrix arrangements for displaying messages.
Because of their long life and fast switching times, LEDs have been used for automotive high-mounted brake lights and truck and bus brake lights and turn signals for some time, but many high-end vehicles are now starting to use LEDs for their entire rear light clusters.
Besides the gain in reliability, this has styling advantages because LEDs are capable of forming much thinner lights than incandescent lamps with parabolic reflectors.
The significant improvement in the time taken to light up (perhaps 0.5s faster than an incandescent bulb) improves safety by giving drivers more time to react. It has been reported that at normal highway speeds this equals one car length increased reaction time for the car behind. White LED headlamps are beginning to make an appearance.
As a medium quality voltage reference in electronic circuits. The forward voltage drop (e.g., about 1.7 V for a normal red LED) can be used instead of a Zener Diode low-voltage regulators. Although LED forward voltage is much more current-dependent than a good Zener, Zener diodes are not available below voltages of about 3 V.
Warm-white and neutral-white LUXEON K2 emitters and a LUXEON K2 Star part can be specified with any standard white emitter.
The new white colors have typical correlated color temperatures (CCT) of 3000K and 4100K and a color rendering index (CRI) of 80 and 75 respectively. The CCT range for LUXEON K2 now extends from 2670K to 10,000K and a new finer color bin structure allows for better overall selection.
Unlike most power LEDs that are limited to 700mA, LUXEON K2 warm white and neutral white LEDs can be run up to 1500mA and a junction temperature of 150°C. The new warm-white and neutral white can deliver more than 130lm and 140lm respectively. LUXEON K2 delivers more usable light at virtually any drive current and junction temperature condition.
“With the increases in light output performance and efficacy, there is expanding demand for power LEDs that deliver the quality of light required for general lighting applications,” said Steve Landau, Director of Marketing Communications. “Designers of residential applications, such as recessed can lights need uniformity, high color rendering and a warm white color temperature at 3000K. In many retail and commercial applications, a cooler temperature of 4100K is desired. With the new binning and phosphor technologies in LUXEON K2, the needs of lighting designers in both markets can be addressed.”
Lighting designers consider several critical “quality of light” factors when evaluating white LEDs: color temperature (CCT), color rendering (CRI) and color uniformity are three of the most important. The new LUXEON K2 parts address CCT and CRI and Philips Lumileds phosphor expertise and technologies ensure the highest degree of color uniformity resulting in white LEDs that are as much as 7 times more uniform that other white power LEDs.
LUXEON K2 Star, like the configuration already available in other LUXEON product families, consists of a white LUXEON K2 emitter mounted onto a metal core pc board (MCPCB). This configuration allows for rapid prototyping and production in a wide range of applications without the need to create custom level 2 boards. LUXEON Star products have been an industry standard for many years and been the configuration of choice for everything from architectural and entertainment lighting to emergency and portable lighting. Complete product information is available on the company’s website and in the LUXEON K2 datasheet also available online. LUXEON K2 warm-white and neutral-white power LEDs are in-stock and available for immediate delivery from Future Electronics. LUXEON K2 Star is stocked in limited quantities and interested parties should contact Future Electronics with their specific needs.
About Philips Lumileds Lighting Company
Philips Lumileds Lighting Company pioneered power LED technology and is the world’s leading provider of power LEDs for everyday lighting applications. The company’s recent records for light output, efficacy and thermal management are direct results of the ongoing commitment to advancing solid-state lighting technology and enabling lighting solutions that are more environmentally friendly, help reduce CO2 emissions and reduce the need for power plant expansion. Today, Philips Lumileds’ LUXEON LEDs are enabling never before possible applications in the automotive, camera flash, display, general lighting and signage markets. More information about the company’s products and technologies can be found at www.philipslumileds.com.
Philips Lumileds Lighting Company
steve.landau@philips.com
+1 408 964 2695
www.philipslumileds.com
The ISO/TS certification demonstrates Cree’s commitment to high-quality product manufacturing.
TS16949 encompasses all requirements of ISO9001:2000 and additional requirements from the automotive industry. Upon the obsolescence of the QS9000 quality standard, Cree chose to fortify its quality certification process and seek compliance with the newer, more stringent ISO/TS16949 requirements.
“Compliance to TS signifies that Cree’s quality management system is capable of meeting one of the highest quality standards worldwide,” said Norbert Hiller, Cree vice president, Lighting. “By successfully implementing an ISO/TS16949-compliant quality management system, Cree has proven that it is not only an LED performance leader, but also a world-class leader in product and process quality.”
For additional information on Cree and its products, please call (919) 313-5300 or visit www.cree.com/xlamp.
About ISO/TS 16949
In 1994, the Automotive Industry Action Group (AIAG) was selected by the Chrysler, Ford Motor Company and General Motors Supplier Quality Requirements Task Force to oversee the publication and distribution of the QS-9000 and related quality manuals and to administer the delivery of QS-9000 sanctioned training. Since that time, AIAG’s quality offerings have expanded to include ISO/TS 16949 and related manuals, as well as more than 30 training offerings related to quality. AIAG is a globally recognized organization founded in 1982 by a group of visionary managers from Chrysler, Ford Motor Company, and General Motors. AIAG’s focus is to continuously improve business processes and practices involving trading partners throughout the supply chain. For additional information visit www.aiag.org.
About Cree, Inc.
Cree is a market-leading innovator and manufacturer of semiconductors and devices that enhance the value of solid-state lighting, power and communications products by significantly increasing their energy performance and efficiency.
June 2007 — LEDtronics introduced the RGB-1007-001 — a
low profile, four legs through hole LED that offers full-spectrum Red,
Green and Blue LED (RGB LED). These discrete LEDs provide excellent performance and terrific visibility in a compact size of only 4.90mm x 6.5mm +0.15. The red, green and blue diodes emit high-intensity light in a viewing angle of 120°.
- The red diode's wavelength is 635nm.
- The wavelength of the green diode is 520nm.
- Blue operates at 470nm.
Depending on the color, luminous intensities range from 230mcd to 750mcd with current between 20mA and 25mA current.
A water clear lens protects the diode array.
Use RGB-1007-001 LEDs with LEDtronics OptiLED Light Pipes to simplify
the spatial relationship between the PCB and remote indicator illumination
points. Light pipes channel all of the LED-generated light to the
exact location where the light is required.
Series RGB-1007 LEDs broaden the illumination options available for back lighting computer panels, car dashboard, handheld instruments like PDAs, data- and tele-communication status indicators, etc. S
olid-state design renders LEDs impervious to electrical and mechanical shock, vibration, frequent switching and environmental extremes. With an average life span of 100,000-plus hours (11 years), LEDs operate reliably year after year and are virtually maintenance free.
Founded in 1983, LEDtronics® leads where others only follow when it comes to designing, manufacturing and packaging state-of-the-art LEDs to meet the world's constantly changing lighting needs. Their inventive product line encompasses an array of direct incandescent lamp replacement Based LEDs, low-cost snap-in and relampable Panel Mount LEDs, high intensity sunlight-visible Discrete LEDs, PCB LEDs circuit board status indicators, surface mount diodes SMT LEDs, full-spectrum rainbow RGB LEDs, Ultraviolet (UV) and Infra-Red (IR) LEDs.
CONTACT INFO:Based in San Jose, Lumileds employs 700 people worldwide. 350 people work in Silicon Valley, while the majority of the rest of the workforce is based in Malaysia, in the packaging plant. Manufacturing the LEDs (by growing the crystals in a process called epitaxy) is done in Silicon Valley. Between 30-40% of its sales are to the automotive industry. Fifteen percent of Lumileds employees work in the R&D department, most in San Jose, but supported by a small team in Best, The Netherlands.
Leading the way in the development of high-flux, high-powered LED (light emitting diode) technology is Lumileds Lighting. In a few years time the company envisages our homes will be powered by LED technology, using materials that will last for 100,000 hours and run at a fraction of the energy cost.
Lumiled was the first company to specifically target the high brightness, high-power, large chip LED market. In February 2001, Lumileds demonstrated a single white LED with an output of 17 lumens a white light output four times higher than the best known white LED. In March, it announced a new solution for LCD display backlights, which will greatly change the industry.
High flux Luxeon light sources offer a larger range of real-life colour and saturation.
Groups of Red, Blue, and Green LEDs can combine at varying brightness intensities to produce a smooth fade through the full color spectrum. Unlike the single color strips which use just 2 wires (a power and a ground), the million color strips use 4 wires (3 for each of the colors, and 1 for either a common power or ground). These 4 wires are hooked up to an LED controller.
Oznium is an online retail store that specializes in LED lighting. They serve many unique markets such as, cars, motorcycles, boats, homes, gaming, and entertainment. Phil Suslow, Owner of Oznium brings his love of gadgetry to his company, "I am an auto, electronics, and gadget enthusiast. I'm always looking for clever ways to fix up my car or any other toys. I've spent many hours crawling under my car, removing the dashboard or seats and installing the products that I sell, so I know what works and what doesn't."
Oznium.com
280 Sally Ride Dr Ste 3
Concord, CA 94520
