Week 24

Progress:

4.2 Potential of Using LED as the Lighting Source

4.2.1 Wide Color Range

The wavelength for the LED ranges from small to large scales. As LED have different wavelength, by using a multiplexing technology to control RGB LED package, it can generate a full color scales.

4.2.2 Small Size

            The sizes of LEDs are small and it can be arranged to any pattern for different applications. The sizes for the LEDs are varying from the smallest Organic LED (OLED) of 1cm type. By such a small package size, it gives a wide area for the lighting engineers to design their own applications.

4.2.3 Easy to Control

            LED operates at low voltage with DC source. Hence, the lighting intensity can be easily driven digitally by using high frequency pulse width modulation (PWM).

4.2.4 Mercury-free

There is no mercury used in the manufacturing of LEDs.

4.2.5 Cost-effective

Although LEDs are initially expensive, the cost is recouped over time and in battery savings. LED bulb use was first adopted commercially where maintenance and replacement costs are expensive. The costs of new LED bulb have gone down considerably in the last few years and are continuing to go down. Today, there are many new LED light bulbs for use in ho mans the cost is becoming less of an issue.