@jcmpix the parameters I posted is based partially on the "L Prize" http://en.wikipedia.org/wiki/L_Prize
The complete "L Prize" 60W Incandescent Replacement Bulb standard is as follows
More than 90lm/W
Less than 10W
More than 900lm
More than 25,000 hours life
More than 90 CRI
2700-300 K Correlated color temperature (CCT)
That ideal has been achieved in 2011 but medyo mahal at $50-60 (without tax) back in 2011.
Today, it should be cheaper. Hopefully di lalampas ng P1,000.00
I did not mention the 25,000 hours of life as I hope that by the year 2025 there will be lighting products that will 230lm/W or more, 50,000 hours of life or more, increase CRI beyond 94 and sell for half of today's prices.
I was told by one distributor that a 80 CRI is "good enough" for residential application so dont stress to much about it.
Be aware that there are flaws to the CRI as a metric and some brands often times take advantage of this so best to test it by using your phone's camera. If the colors taken under the LED you are testing are so off from that taken under natural sunlight or Incandescent/halogen bulb then you know the published CRI is fudged.
To better understand the criticism on CRI go to http://en.wikipedia.org/wiki/Color_rendering_index#Criticism_and_resolution
CRI is of the utmost importance in commercial photography, cinematography & video. When CRI fails these application then referring to newer metrics like TLCI (Television Lighting Consistency Index) is often used. Same numbering scale of 0 to 100.
In California it is a requirement to label all lighting fixtures in lumens to easily compare various products to each other rather than the more antiquated metric of Watts.
I'm not an engineer but I read because power rates in the Philippines is the highest in Asia and rivals that of Japan. High rates is ok if our society was advanced as our neighbour to the north.
Here are some examples of what the numbers mean in terms of color rendering.
In the US Cree sells a 60W equivalent LED bulb with 800lm, 93 CRI, 13.5W power consumption, dimmable, 25,000 hrs rated life, for the subsidised price of $10 (before taxes).
Full Specs http://creebulb.com/products/standard-type-a/60-watt-replacement-tw-series-soft-white-led-bulb
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