Understanding LED

Light Emitting Diode A solid state semiconductor device that converts electrical energy directly into light.

Introduction LED technology is advancing quickly. Sometimes, there is confusion regarding the information about LED. By comparing LEDs with other common used light sources, this brochure helps you to achieve a better understanding of the realities of LED lighting.

Comparisons General Comparison LED

Compact Fluorescent Lamp

(MP LED72)

(GE 13W CFL)

Halogen Lamp

(Philips MR16 50W EXN 36°)

Incandescent Lamp

Cool White

Warm White

Energy Use

12W

12W

13W

50W

60W

Efficacy

100 lm/W

80 lm/W

63 lm/W

16 lm/W

14 lm/W

Life Time in Hours

50,000

50,000

8,000

3,500

1,000

Life Time in Years ◊

17.1

17.1

2.7

1.2

0.3

Use of Electricity in 50,000 Hours

12W x 50,000h = 600kwh

12W x 50,000h = 600kwh

13W x 50,000h = 650kwh

50W x 50,000h = 2,500kwh

60W x 50,000h = 3,000kwh

Cost of Electricity in 50,000 Hours†

600kwh x \$0.14/kwh = \$84

600kwh x \$0.14/kwh = \$84

650kwh x \$0.14/kwh = \$91

2,500kwh x \$0.14/kwh = \$350

3,000kwh x \$0.14/kwh = \$420

Maintenance Labor Cost in 50,000 Hours‡

0

0

1.67 x 5 lamps = \$8.35

1.67 x 13 lamps = \$21.71

1.67 x 49 lamps = \$81.83

Based on the usage of 8 hours/day Electricity rate \$0.14/kwh. ‡ Labor cost is \$1.67 per lamp, which is based on 4min re-lamping time per track light. ◊

Aspects Comparison LEDs to Fluorescent Lamps LED

Fluorescent

Dimmable

Yes

Yes (Color shifting to cooler light temperature)

Compact Light Source

Yes

No

No

Yes

No

Yes

Mercury Pollution

No

Yes

Breakage

No

Yes

Copyright 2009 © MP Lighting. All information in this document is subject to change.

2

Rail system with 6, 50W MR16 Halogen Lamps vs. rail system with 6, 12W MP LED72

12W MP LED72 x 6

50W MR16 x 6 Cool White

Warm White

5100 lm

5400 lm

4320 lm

Total Energy Use*

300W

72W

72W

Cost of Electricity in 3,500 Hours

\$108.15

\$35.28

\$35.28

Total Lumens

Cool White 1W LED

(Available in January, 2009)

*Fixture consumption only

Warm White 1W LED

Product Life Time Comparison

Compact Fluorescent Lamp 13W

(70% lumen maintenance)

00

Compact Compact Fluorescent Lamp Fluorescent Lamp

3,500

16

Incandescent Lamp 60W

8,000

Halogen Lamp Halogen Lamp MR16 MR16

50,000

14

0

3,500

20

40

60 Lumen/Watt

Incandescent Incandescent Lamp Lamp

8,000

63

Halogen Lamp MR16 50W

LED

LED

80

1,000

1,000

10,000

0

20,000

30,000

40,000

50,000

Time (hrs)

Efficiency Comparison Cool WhiteCool White 1W LED (Available in January, 2009) 1W LED

LED Fluorescent Lamp

8,000

ogen Lamp MR16

100 50,000

Warm White Warm White 1W LED 1W LED

80

Compact Fluorescent Lamp Compact Fluorescent Lamp 13W 13W

63

3,500

ncandescent Lamp 0

Halogen Lamp MR16 Halogen Lamp MR16 50W 50W 1,000 Incandescent Lamp Incandescent Lamp 60W 10,000 20,000 30,000 60W 40,000 Time (hrs)

0

16

14

50,000 20

40

60

80

100

120

Lumen/Watt Lumen/Watt

Copyright 2009 ÂŠ MP Lighting. All information in this document120 is subject to change.

3 100

80

Time (hrs)

Light Output Comparison

(Information partially provided by Philips Lighting)

Unlike typical conventional light sources, LEDs do not dramatically burn out and cease to function. High Power LED

Relative Light Output %

100 80 60

White LED

40 20 0

2,000

4,000

6,000

8,000

10,000

12,000

16,000

Typical Incandescent

20,000

Time (hrs)

Color Rendering Index (CRI) Comparison CRI is a rating from 0 - 100, describes how a light source makes the color of an object appear to human eyes and how well subtle variations in color shades 100 are revealed. The higher the CRI rating is, the better its color rendering ability. Relative Light Output %

96 Below is a comparison High CRI LED between depiction with high CRI (left) and low CRI (right). 80

High CRI

60 Normal LED

80

Low CRI

40 Compact Fluorescent

80

20 Tungsten Halogen

100

0 Incandescent Lamp 2,000 0

4,000

6,000

20

8,000

40

9712,000

10,000

60Time (hrs) 80

16,000

20,000

100

CRI

*For illustration purposes only.

96

High CRI LED Normal LED

80

Compact Fluorescent

80

Tungsten Halogen

100

Incandescent Lamp

97

0

20

40

60

80

100

CRI

High CRI LED has higher CRI than compact fluorescent lamp. (Information is partially provided by NRC-IRC)

Copyright 2009 ÂŠ MP Lighting. All information in this document is subject to change.

4

Environmental Impact Mercury Emissions by Light Source

LED

(Evaluated over a five-year life)

1.2 mg* (LED itself contains no mercury)

Compact Fluorescent

Since coal power in the United States accounts for approximately 50% of all power production, by using the electricity generated from coal, there is an emission of mercury as well.

6.4 mg (Mercury used in CFL, 4 mg / Emission from coal power plant, 2.4 mg*)

Halogen MR16

8.3 mg* 10 mg*

Incandescent

*By using the electricity that is generated from coal-burning power plants.

0

Milligrams of Mercury

(Information is partially provided by USEPA, June 2002)

CO­­2 Emission Comparison

(Based on the national average 1.34lbs/k Wh)

10

5

LED (MP LED73, 6W)

Most of our electrical power supplies come from burning fossil fuels, especially coal, a huge CO­­2 culprit. By using such electricity, there is an emission of CO­­2.

Compact Fluorescent, 13W

(Information is partially provided by National Geographic Society-Green Guide)

Incandescent, 60W

0.19 0.42 1.61

Halogen MR16

1.93

1

0

2

CO2 Emission per day in similar lumens (24hrs, in lbs)

LED (MP LED73, 6W) Compact Fluorescent, 13W

Summary

Halogen MR16, 50W

0.19 0.42 1.61

Incandescent, 60W

Besides the long product life and the reduced maintenance cost, LED is energy efficient, it delivers more lumens per watt over other light sources. Also, there is no mercury contained in LEDs. By 0 1 using less energy, LEDs not only save money, but also limit negative impact onin similar the lumens environment. CO2 Emission per day (24hrs, in lbs) All in all, LED is a cost effective, reliable and clean light source.

Copyright 2009 © MP Lighting. All information in this document is subject to change.

5

1.93

2

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