No.6（2011）6.Estimation of photometric characteristic and EMC characteristic for LED lighting products

Toshihide Iwanaga, Hirotaka Nakamura, Takeshi Kobayashi, Kenichi Haji

  Photometric characteristics and EMC characteristics were evaluated for various commercial LED lighting products (incandescent type, spot light type and down-light type). In the results, (1) the luminous efficacies evaluated for LED products were almost all under the values for fluorescent lamps. However, the illuminance per Watt of the LED products were almost all above the values for the fluorescent lamps.(2) LED products including blue LED+RG phosphor or blue LED+Yellow phosphor types are suitable for general office lighting regarding matches with luminous efficacy and rendering index.(3) The value of electrical harmonics for the LED products did not meet the limit of JIS61000 .(4) The results for the photobiological safety evaluation for retinal blue light hazard from LED products put them in the Exempt group of CEI/IEC62471 except the down-light type products, which were in the Low risk group. It should be noted that higher luminance products may exceed the hazard exposure limit.

Keywords
luminous efficacy, rendering index,harmonics, photobiological safety

Back to Contents