blue led: key to modern energy efficient lighting
TRANSCRIPT
Hello Everyone
BLUE LEDKey to Modern Energy Efficient Lighting
What Is LED?
Colours Of LEDThere are 3 different colours of LED. From the combination of these three colours another colours can be found.
VIBGYOR
LED Bulbs In Different Sizes And Different Shapes
Why LED is important?
• Easy to create• Have a variety of colours • Energy efficient • Can be reshaped into different sizes• Produces less heat compared to other bulbs• Long lifetime compared to other bulbs• Can be used in anywhere from huge lighting to nano
technology• Used in various scientific experiments
Problems with traditional lamps• Create light by heating solid materials • Most of the energy lost as heats • Inefficient • Operating cost is high • Only last 6 month• 40 and 60 watt bulbs are banned in USA• Have only one colour, Yellow • Can not be used in experiments
Efficient from other lights
Why Blue LED is exceptional?
• Blue LED is made from Gallium Nitride(GaN)• The colour BLUE can not be created easily • Its nature is different from other LED• If Blue LED is not invented, white LEDs are not
created• Eyesight of man can easily catch blue light rays
Blue LEDs structure is different from others
White light is produced from blue light
Uses of Blue LED
• Used in lighting at home,streets,markets.• Used as flash lights , search lights • Used in display of smart phones, LCD TVs. • Used in nano-technology• Used in complex lighting• For decoration
Blue LED used in camera flashlights
LED used in Television background
Blue LED Used For Decoration
LEDs Used In Street Lighting
Some disadvantages of LED
• Shift colour due to age and temperature• Need correct voltage and correct current• Initial expense is high But if we compare this disadvantages with the
disadvantages of other bulbs , it is negligible.
Any Questions ? ? ?
Thank You