The Ministry of New and Renewable Energy in India cites the following applications of LEDs:
Light emitting diodes (LED) has number of applications. They include
devices, medical appliances, indicators and signs, emergency vehicles,
flash lights etc.
Devices, medical applications, clothing, toys
• Remote controls, such as for TVs and VCRs, often use infrared LEDs.
• Glowlights, as a more expensive but longer lasting and reusable alternative to Glowsticks.
• Movement sensors, for example in optical computer mice
• The Nintendo Wii's sensor bar uses infrared LEDs.
In optical fiber and Free Space Optics communications.
Toys and recreational sporting goods, such as the Flashflight
Lumalive, a photonic textile
In pulse oximeters for measuring oxygen saturation
LED phototherapy for acne using blue or red LEDs has been proven to significantly reduce acne over a three-month period.
Some flatbed scanners use an array of red, green, and blue LEDs rather
than the typical cold-cathode fluorescent lamp as the light source.
Having independent control of three illuminated colors allows the
scanner to calibrate itself for more accurate color balance, and there
is no need for warm-up.
Computers, for hard drive activity and power on. Some custom computers
feature LED accent lighting to draw attention to a given component.
Many computer manufacturers use LEDs to tell the user its current
state. One example would be the Mac, which tells its user when it is
asleep by fading the LED activity lights in and out, in and out.
Sterilization of water and other substances using UV light.
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