What is the advantages and disadvantages of artificial light and where is the market?

What is the advantages and disadvantages of artificial light and where is the market?

Artificial Lighting Advantages & Disadvantages

Practically and economically speaking, LEDs seem to have a huge advantage and this is why most newly built facilities in developing countries are choosing LEDs for most of their environment lighting (e.g. factories, offices, libraries, museums).

Artificial light advantages and disadvantages

So why continue to buy Incandescent Lights?

For the consumer, it is the out-of-pocket expense that is a significant factor. A retail LED (as of this writing 1/2014) may cost $15 out-of-pocket but an Incandescent bulb may cost you only $3. Which would you buy? What if you had to replace 2 bulbs? ($30 vs $6).

The Incandescent light also comes as close to natural sunlight compared to the other two, and its light quality is close to Sunlight, which is the gold standard for light because, as evolutionary beings, our eyes have become accustomed to sunlight and the rich colors it produces.

Why people still use incandescent bulbs (USAtoday 12/27/2013)
http://www.usatoday.com/story/news/nation-now/2013/12/27/incandescent-light-bulbs-phaseout-leds/4217009/

Why continue to buy incandescent lights?

So why continue to buy Fluorescent Lights?

Fluorescent Lights fall between Incandescent and LEDs. It lasts much longer than an Incandescent light, but it's cheaper than an LED light. It's ideal for places that are not assured a long term location (e.g. for a convenience store that is renting space, why would you buy a 50,000 hour LED light?).

Why continue to buy fluorescent light?

Disadvantages...

The most troublesome aspect of incandescent lights is its indiscriminate use of energy. 90% of the energy used is dissipated as heat - only about 10% is released as light.

Incandescent light disadvantage

The fragile Fluorescent tube can easily shatter and presents a health hazard when the toxic Mercury liquid is exposed; clean up requires careful, meticulous removal procedures. Mercury exposure is known to cause neurological problems. Fluorescent Lights use UV light inside their tubes, but small amounts do escape - UV light is harmful to the eyes and skin. Fluorescent Lights have also been known to Flicker - studies indicate that long term exposure to light flicker is harmful to our eyes.

Fluorescent light disadvantage

LEDs use semiconductors though you may think this type of technology is quite sophisticated, the actual production of the LED chip is not always an exact science - LED light quality can vary quite greatly between batches and each batch may be categorized and sold as different qualities of color and intensity. In fact, CPUs used in computers are also semiconductor based and have similar issues they cannot guarantee the same exact performance from batch to batch and measures must be taken to moderate performance expectations (e.g. over-clocking).
http://www.designrecycleinc.com/led%20comp%20chart.html

LED light disadvantage

The Market
A changing world - What we know
  • There are still lots of people who use incandescent lights (mostly in homes).
  • There are still lots of Fluorescent Lights in public places (e.g. hospitals, offices etc.).
  • Lighting designers are saying new facilities (factories, hospitals, libraries etc.) are most likely to install LEDs.
  • Some existing facilities are changing out their lights completely for LEDs, already realizing the long term cost savings.
  • Most developed countries are exercising phase-out plans for use of incandescent bulbs.
  • The price of an LED bulb is dropping to the point that they will start to compete with CFLs for market share and eventually surpass them in a few years (maybe by 2015).
LEDs are on course to take over the world
G'bye to Incandescent

Countries exercising full, partial, planned bans of incandescent bulbs or exchange programs.
(According http://en.wikipedia.org/wiki/Phase-out_of_incandescent_light_bulbs as of this writing 02/2014)

Phase-out of incandescent light bulbs

Hello to LED

Estimated North American LED market to grow about 45% every year over the next 7-8 years.

UPRtek survival handbook LED market
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Related FAQ
Let's have an over view of the 3 common types of artificial light. The traditional Incandescent bulbs were first on the scene. Next, came the Fluorescent Lights and then LED Lights, both bringing advantages in bulb lifespan and energy savings. However, they are all three, still in use with their own distinct advantages and disadvantages. Read More
Incandescent lighting uses heat (thermal radiation) to produce light. Sunlight and Candle light are generated in this way. Incandescent Light Bulbs also generate heat (thermal radiation) through a "filament". The filament heats up to produce light like a candle. Read More

Fluorescent Lights have been commercially available since the 1930s as long Fluorescent Tubes. A smaller bulb like CFL (Compact Fluorescent Light) only became widely available in the 2000s. These lights use a mercury vapor (steam) inside the tube; electricity is applied within the tube, which causes the mercury vapor to emit UV light, or more accurately UV radiation. The UV radiation hits the inside surface of the tube which is coated with a phosphor material. The UV radiation causes the phosphor to glow.

Read More

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UPRtek What is the advantages and disadvantages of artificial light and where is the market? Introduction

United Power Research Technology Corp. is Taiwan supplier and manufacturer in Optoelectronics Industry. UPRtek has been offering our customers high quality Spectrometer, Color Meter, Spectral PAR Meter, Spectral Color Meter, Spectrum, LED Meter, Spectradiometer, LED Measurement, LED light testing since 2010. With both advanced technology and 8 years experience, UPRtek always make sure to meet each customer's demand.


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