Many of the LED lamps tested could

Many of the LED lamps tested could be effective replacements for conventional directional lamps in the right application. The lumen output of many of the products was equivalent to 40 to 90 W halogen PAR38 lamps, and all emitted between 388 and 1,363 lumens. Efficacy ranged from 26 to 79 lm/W, although all except one of the products was between 44 and 79 lm/W. The LED PAR38 lamps had luminous intensity distributions ranging from narrow (8° beam angle) to very wide (64° beam angle); the suitability of these distributions depends on the application, but the availability of narrow distributions is an important finding. Although there were a few exceptions, most of the lamps had color quality attributes that were appropriate for replacing halogen PAR lamps in most applications. In an improvement compared to earlier testing, 37 of the 38 products had a power factor higher than 0.70.