One family of LEDs may already be closer to improved light output.Devices with enlarged chips produce mor light while maintaining proper heat and current management.These advances allow th units to generate 10 times to 20 times more light than standard indicator lights, making them a practical illumination souce for lighting fixtures.
Before LEDs can enter the general illumination markt, designers and advocates of the technology must overcome several problems, including the usual obstacles to mainstream market adoption; Industry-accepted standards must be developed and costs must be reduced.But more specific issues remain. Things like lumen-per-watt efficacy and color consistency must be improved and reliability and human maintenance should be  addressed. Nevertheless LEDs are well on their way to becomming a viable lighting alternative.