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Optoelectronics/Displays??

Luminous flux to push LED bulb adoption

Posted: 27 Jul 2011 ?? ?Print Version ?Bookmark and Share

Keywords:luminous flux? incandescent? LED?

Although a number of LED light bulbs in the market suggest they are capable of replacing 40W incandescent bulbs, a survey by LEDinside has revealed that a number does not reach the minimum luminous flux of 450lm, a requirement that many LED bulbs, clearly, do not meet.

According to the comparative survey conducted by LEDinside, some vendors' LED light bulbs reach 450lm, the luminous intensity by regular 40W incandescent bulbs. However, some do not. For European and American lighting manufacturers such as Philips and GE, Philips' 8W Master LEDbulb and GE's 8W model no. 62180 LED bulb met this requirement with luminous flux of 470lm and 450lm, respectively.

For Japanese manufacturers, known for their diligence and meticulous work, both Toshiba's 7.2W LDA7L and Sharp's 7.8W DL-LA42L met the 485lm standard, complying with Japan Electric Lamp Manufacturers Association's guideline specifications.

For LG, its 7.5W LED bulb (model no. LB08D830L0A) also met this lm standard. However, the shocker was Samsung. Its 4.4W product only had a luminosity of 270lm and 320lm for warm white and cool white, respectively. Such discrepancy was unexpected.

Furthermore, other manufacturers like EcoSmart, LEDON and Feit Electric have also introduced LED bulbs to replace 40W incandescent bulbs, including EcoSmart's 8.6W LED bulb (model: ECS 19 WW 120), LEDON's 6W products and Feit Electric's 6.5W LED bulb (A19/HP/LED). However, the survey showed that the luminous flux of these products did not hit the 450lm mark either.

Finally, Osram is in an interesting position, as its cold white LED light bulb reached 450lm while its warm white only had 345lm.

LED lumens





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