In consideration of whether or not LED light bulbs are truly a proper replacement for 40W incandescent bulbs, as major manufacturers claim, brightness is an important factor, as LEDinside has previously mentioned. What other standards must be met in order to make the transition to LED bulbs?
According to a previous survey on brightness of LED light bulbs by LEDinside, a research division of TrendForce, major brands that lived up to replacement specifications include European company Philips, U.S. lighting giant GE, Japanese manufacturers Sharp and Toshiba, and Korean electronics maker LG. While these companies' products meet brightness standards, do they also adhere to other standards necessary for incandescent light bulb replacement?
LEDinside further analyzes light bulbs from major international LED makers that met brightness standards to replace 40W incandescent lamp.
Color Rendering Index
First,in terms of color rendering,the CRI of LED lighting is not as high as that of incandescent bulbs(CRI=100).Both the U.S.Department of Energy(DOE)and Korea's Korean Industrial Standards(KS)have CRI standards for the replacement of incandescent bulbs with LEDs.The DOE requires a CRI of 80 or above,while the KS standard is 70 CRI or higher.While LED products from the major brands do not match incandescent bulbs in terms of CRI,they still meet various national standards.Uniquely,Sharp does not list CRI values for their products.While LEDinside believes Sharp's products have ratings of 70 CRI or above,it is somewhat disappointing that they do not explicitly label their products as such.
