LEDs and controls continue to make headway in the lighting market. Here's a look at the best and brightest. The next time you're stopped at a traffic light, look closely. Those just might be LEDs in place of your father's tried and true incandescent bulbs. Or if you're driving behind a semi, the red brakelights are probably LEDs. LEDs have been making inroads into territory traditionally held by incandescent and fluorescent bulbs, such as general-purpose lighting. They're also increasingly used extensively in good old industrial applications; as replacements for incandescent bulbs on panel indicator lights, in scanners as light sources, and in backlighting applications where they displace more costly and heat-producing electroluminescent bulbs. Here's a brief look at some LED applications that are gaining ground, as well as some novel approaches to traditional lighting setups. , Strongsville, Ohio, manufactures fiber-optic backlighting panels. One or more LEDs produce enough light to diffuse over the panel area. Fiber-optic panels are an alternative to electroluminescent types and LED arrays and light pipes which direct light to some desired area. Plus, the fiber-optic panels, lit by LEDs, don't require an inverter to convert ac to dc voltage, reducing cost and consumed power. Now, newer fiber-optic panels incorporate conductive pads for backlighting membrane switches. The pads are integrated into the switches for use in keypads, keyboards, and membrane switches. The light sources feature low-power consumption (10 to 25 mA), last up to 100,000 hr, have zero impact on the tactile feel of elastomeric keys, and can backlight a larger area than surface-mount LEDs. Conductive pads are printed on the underside of the fiber-optic panel and, when integrated with rubber keypads or membrane switch overlays, function as a switch. A conductive material on the pads is suspended above the traces on the PC board. Pressing a button,
Products & Services
Membrane Switch and Keypad Services
Suppliers of membrane switches and keypad assemblies using flexible membranes, domed or flat switch profiles, and tactile and non-tactile switches and panels.
Light Emitting Diodes (LED)
Light-emitting diodes (LED) are PN junction devices that give off light radiation when biased in the forward direction. LEDs are used in a wide variety of indication applications.
Pilot Lights and Indicator Lights
Pilot lights and indicator lights are indicating lights for machines or instruments. Most indicators favor the use of LEDs or incandescent lamps.
Electroluminescent Lighting are flexible sheets, wires, sticks, etc. that uses electroluminescence to produce illumination.
Digital LED Displays
Digital LED displays are segmented or dot matrix displays allowing for numeric only and alphanumeric character representation.
Design and manufacture of a comprehensive offering of membrane switches and keypads, with full tooling capability. From metal & polydome to elastomeric keypads with integrated LEDs resistors and...
Topics of Interest
LEDs are fast replacing Fluorescent light bulbs and incandescent light bulbs in many lighting
applications. In the past these sources could be driven directly from the mains voltage, but this is not...
This white paper was developed to provide an overview on backlight technologies. It is intended to help the reader better understand the different technologies along with the advantages and...
At first, the title of this chapter may appear a bit odd for as you already know, light-emitting diodes (LEDs) emit light. However, instead of completely focusing on the manner in which LEDs emit...
Although Planar's thin film EL (TFEL), EL backlighting for LCDs, LEDs, and Organic Light Emitting Diodes (OLED) are all electroluminescent materials, their properties are very different and lend...
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...