Invisible Light Uses For Led Technologies

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While most of us are aware of the many places where we see Light Emitting Diodes (LEDs) all around us every day, we may not realize the other uses for LEDs in applications using the invisible part of the light spectrum. Technically, the spectrum of light consists of colors we can see with the naked eye, and colors that are invisible to the naked eye. LED technology is equally adaptable for uses in either side of that spectrum.

Because LEDs can be cycled on and off millions of times per second, they can be used to transmit massive amounts of data, and take on similar properties to lasers, another light technology. Infrared LEDs are used in such basic and taken-for-granted devices as television remote controls, game console sensors, etc. Their use is just now becoming known for applications far more diverse than one would at first believe possible.

LEDs are used to induce photosynthesis in plants, measure oxygen levels in blood, and sterilize water. They are also becoming widespread in touch sensors, a technology that is decidedly a 21st century concept, but one that has become more and more common. LEDs are used as photodiodes, and can detect light emission, reflection, and variance. Touch sensors are present in areas where high security is required, or where communication is to be detected from the pressure of a finger or stylus.

Perhaps the most well-known recent touch screen technology is the iPhone from Apple Computer inc. Since its introduction, touch screens have been all the rage across a broad range of applications, not just phones. They are also now present as security devices in personal computers, and they are independent input devices at banks and other secure businesses. They can scan fingerprints, retinas, and are used in the highest security regimens in certain government departments for failsafe personal identification.

When the LED is used in a photodiode application, one can interact with content directly, rather than through a computer mouse or touchpad. Highly talented artists use LED tablets to produce hand drawn content directly on a computer screen for later use in wide spread electronic media applications.

LED technology is all around us, both in visible and invisible form. As our understanding of light continues to grow, so will our ability to harness it through the use of technologies such as the humble Light Emitting Diode, invented in the 1920s.


About the Author:
Marktech Optoelectronics offers LEDs , parts and accessories for all types of LED lighting installations. Any trademarks or trademarked names referenced in this article are the property of their respective owners. Art Gib is a freelance writer.



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