Humax

The most commonly used lights in Christmas are the incandescent lights. These incandescent lights are the ones that produce a very broad spectrum of light which is known as white light. The incandescent lights are colored. They are colored by covering the glass covering or envelope with a translucent or transparent paint. This translucent or transparent paint acts as a color filter. This helps in illuminating and gives the desired color on reflection of the light.

However, earlier even Japanese made lamps, but they used colored glasses. These colored glasses were not very expensive, they were pretty cheap. But the major disasdvantage is that the lamps those are painted mostly and generally suffer from flaking or fading when exposed to different weather conditions. Bulbs which are old were also coated on their inner surface to prevent flaking and fading of the paint. But when they were manufactured it turned that they have a very high cost. So they were not very popular then.

White light emitting diodes are in many ways similar to colored light emitting diodes with respect to durability and power. But the white light emitting diodes utilise a process which two staged to create or form white light. White light is polychromatic and it provides us with a very broad spectrum. White light emitting diodes are commonly used for decorating or lighting the Christmas tree as they can be used to create or form any good and bright color. This can be done by the use of colored lenses and colored refractors. These colored refractors and lenses are also present in many incandescent lights also. Fading of the colors of lights occurs due to constant exposure to sunlight. When the colored plastics are exposed to the sunlight or heat color fading occurs. This is the same case with lights which are ordinary and are used for decorating Christmas trees. In the case of epoxy bulbs, a yellowing may be seen. This can happen when the light emitting diode is exposed to the sunlight consistently for a very long period of time. It is believed that light emitting diodes utilise less electricity. The light emitting diodes are made from materials which hard and solid.

No metallic filaments are used so there is no threat of any break or burn. These diodes are very much less susceptible and prone to rough handling or breakage due to an impact. Even though light emitting diodes have a long life the poor quality and old strings of these diodes have a very short life and they are prone to cause a failure during the Christmas time. This thing is common with the diodes that produce blue light. These blue light producing diodes are the new ones in the market and are very expensive. Christmas lights which are made of light emitting diodes have copper wires which are very well connected to the aluminium based wires present in the light emitting diodes. This combining of the two metal wires is disadvantageous as it can cause galvanic corrosion.