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  • Introduction to Light Emitting Diode Technology and Applications
    Introduction to Light Emitting Diode Technology and Applications. Taking readers on a tour of the LED evolution, this book discusses the latest opportunities and advancements in high brightness (HB) LED technology, solid state lighting, and handheld electronic applications.
  • Fundamentals of Photoelectric Sensing
    Today 's photoelectric sensor is one of the most versatile non-contact sensing devices known to man. The reliability of photoelectric "eyes " or "sensors " took a giant leap forward in the early 1970s when the light emitting diode (LED) replaced the fragile incandescent light source.
  • LED Lighting for Hazardous Locations (.pdf)
    Light-emitting diodes are not a particularly new technology. Affordable LEDs have been available since the late 1960s. From then until now, the technology has steadily progressed in terms of cost-effectiveness, color options, light output, and efficiency. Thanks to ongoing advancements
  • Electromagnetic compatibility of lighting equipment
    The EU decision to finally. abolish incandescent lamps by. 2012, the progress in the. luminescent power of light. emitting diodes (LED) and the. further development of. low-pressure and high-pressure. discharge lamps are all leading. to a sharp increase of electronic. modules in lighting technology
  • OLED on the Cutting Edge
    Transparent displays? Flexible and foldable phones? Stick-on displays? These may sound like the displays of the future, but already Organic Light Emitting Diodes (OLEDs) are providing the foundation for these next-generation display products. Some of them are starting to become available already
  • Correction Methods for Semiconductor Laser Diodes
    integrate a highly advanced microlens into a variety of our packages. Microlensing circularizes the naturally elliptical light output of a laser diode. The microlensed diode emits a circular, diffraction limited beam without the inclusion of correcting prisms and lenses. In addition, the extremely high
  • Optical Sensor Application Notes
    LEDs (Light Emitting Diodes), semiconductor light sources, have been introduced and developed for several decades. LEDs are. applied in many devices as indicators and general illumination products such as lighting components. As a "green" light source, LEDs. can provide long life time and high
  • Testing Induction Lamps using Digital Oscilloscopes
    There are many types of lighting devices including the familiar incandescent lamp, LED (light emitting diode), HID (high intensity discharge), fluorescent, and induction lamps. All of them can convert AC power (and in some cases DC power) into light. But there are differences in efficiency
  • LED Measurements
    Since it is possible to manufacture Light Emitting Diodes in a wide variety of colors and brightness, it is also necessary to accurately measure their optical characteristics. There are two ways of measuring LED's, photometry and radiometry. Photometry only relates to visible radiation, like
  • Expand+Proceedings of the National Academy of Scienceswww.pnas.orgPublished online before print January 26, 2009, doi: 10.1073/pnas.0811900106 PNAS February 3, 2009 vol. 106 no. 5 1342-1346
    emitting diodes. The charging/discharging dynamics were investigated indirectly by a variety of single molecule electro-optical spectroscopic techniques, including an "image-capture" approach.
  • Dimming Power LEDs Using a SEPIC Converter and MCP1631 PIC Attach PWM Controller (.pdf)
    Programmable Current Source Reference Design. A Microchip MCP1631 PWM controller and a low-cost PIC16F616 microcontroller are used to manage a SEPIC (Single Ended Primary Inductive Converter) powertrain. The SEPIC topology is then used to drive and dim Light Emitting Diodes (LEDs).
  • * Optimizing High-Voltage Common Mode Rejection Performance of the APCL-x6xL Ultra-Low Power Optocouplers
    The ACPL-x6xL products are optically coupled ultra-low. power 10 MBd digital CMOS opto couplers that operate. with low power consumption, especially when the light. emitting diode (LED) operates at low current. When. a current is applied to drive the LED, common mode. rejection (CMR) can be aff
  • An engineers guide to selecting power supplies for LED lighting applications
    Traditionally, lighting comprised some form of incandescent, fluorescent or halogen lamps. That has changed with the ever increasing popularity of light emitting diodes (LEDs) which are finding applications in both indoor and outdoor luminaires. The main drivers of this trend are energy savings
  • The Display Landscape of Mini- and MicroLEDs
    light emitting diodes") refers to LEDs that are roughly 100 µm square (0.1 mm square), although "mini" can also simply describe any LED between micro and traditional size.

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