This document summarizes the internship experience of MD. Adil at OsakaGreen PowerSol, a company that manufactures LED illuminations. It provides an overview of LED lighting technology, including how LEDs work, common uses of LEDs, advantages over other lighting such as longer lifespan and energy efficiency, and flexibility in applications. The internship allowed MD. Adil to gain practical industry experience in manufacturing, testing, and packing LED products.

1. LED LIGHTING TECHNOLOGY
OsakaGreen PowerSol
BY :
MD. ADIL
B.TECH (ECE)
SDIET

2. OUTLINE
 Summer training at OsakaGreen PowerSol, Faridabad.
 It was amazing experience, I got practical industry exposure.
 The company deals with the manufacturing of led Illuminations, testing,
packing etc.
 I worked as practical trainee.
 Main objective was to gain the practical industry experience which
increase in my knowledge. And how to work in that environment.
Do Right, Save LIGHT

3. CONTENTS
 Introduction
 Where do we see LEDs
 Use of LED
 LED Flexibility
 Why LED Lightings or illusions ?
 Comparison of LED lightings with others
 Reasons to use LED lumens products

4. What are LEDs ?
 A two-lead semiconductor light source
 P-N junction diode
 Works on principle of recombination of
electrons & holes in VB
 Process called electroluminescence.

6.  Color of led light > wavelenght of light emitted >
forbidden gap > material used
 Blue LED,1972 Gallium Nitride(GaN)
 Common LED colors include amber, red, green,
and blue
 There is actually no such thing as a “white” LED
 Different color LEDs are mixed or covered with a
phosphor material that converts the color of the light
 The phosphor is the yellow material we see on
some LED products
 The phosphor is the yellow material you can see
on some LED products

7. Where do we see LEDs ?
Everywhere
 Sensors
 Mobile
 Sign Applications
 Automative Uses
 LED Signals
 Illuminations
 Indicators

9.  LEDs are now widely being
incorporated into bulbs and fixtures
for general lighting applications.
 LEDs are small and provide unique
design opportunities.
 Some LED light fixtures may have
LEDs built–in as a permanent light
source.
 LED bulb may look like familiar light
bulbs and some may not but can
better match the performance of
traditional light bulbs.

10. LED Flexibility
 Virtually any light source can be replaced by LED
PAR MR16 A19 G24 T8 Tube
Streetlight Downlight Panel light Wall Pack High Bay

12. Why Led bulb and Led
illusion ?

13.  Long Life Light Source (60,000 hour)
 Excellent lumen in less power
 Bright and white and “green” all over
 Environmentally Friendly (no mercury)
 Directional & point light source
 Produces much light per watt
 Energy Efficient
 Light up quickly
 Being solid state components, are difficult to
damage with external shock
 Symmetrical beam with little-to-no artifacts
 Economical manufacturing

14.  Available in a multitude of colors without
requiring a filter.
 Pure white light means no color will be
filtered out.
 Low temperature functioning

15. Light Source Comparison
15
Light Type
Data
Sheet
lm/W
Usable*
lm/W
Lifetime
(hrs)
Incandescent 17 10-17 3k
Halogen 20 12-20 10k
T12 fluorescent 60 45-50 20k
Metal halide 70 <40 5k-15k
T8 fluorescent 74 55-60 20k
Best-in-Class Power LED 120 55-75 > 60k
High-pressure sodium 91 <50 20-24k
T5 fluorescent 107 96 20k
Low-pressure sodium 120 65-70 18k
* Usable lm/w – What is actually delivered

16. LED Lights vs.
Incandescent
Lights vs. CFLs

19. Advantage of LED lights
 Energy, efficiency and cost
 Eco Friendly
 Insensitive to low temperature
 Insensitive to humidity
 insensitive to multiple on/off cycle
 Fast switching
 High Durability
 low heat emission
 No typical failure

20. Disadvantages of LED bulb
 LED lighting is more expensive investment than a traditional light sources.
 LED performance largely depends on the ambient temperature of the
operating environment.
 LEDs must be supplied with the correct voltage and current at a constant
flow.
 Overheating may cause deterioration of the LED chip itself.
 Adequate heat-sinking is required to maintain long life.
 LED’s can shift color due to age and temperature.

22. Thank you
for attention :)