Light - LEDs, Light Emitting Diode, Solid-Sta...

About This Category

• low energy = low power, high-efficiency, efficient, "green" = Typically LED or CFL, such "low-energy" lighting is many times more efficient (in terms of light output power for given input electrical power) than "standard" incandescent tungsten-filament bulbs, which of necessity must get very hot and generate a lot of heat.
• low energy led = LEDs, Light Emitting Diode, Solid-State Lighting, SSL = See also LEDs. A physically tough/robust solid-state semiconductor light-generation mechanism with efficiencies in lumens per Watt (lm/W) and useful lifetime significantly exceeding that of CFL (compact fluorescent).

low energy LED 5W cool white bulb 240V mains alongside 11W CFL warm white lights on domestic spotlight strip for comparison 1 DHD.jpg ... low energy LED 5W cool white bulb 240V mains ES Edison Screw base 5x1W Cree High Brightness closeup 3 DHD.jpg

low energy led

Thumbnail	Exhibit Name
	low energy LED 5W cool white bulb 240V mains alongside 11W CFL warm white lights on domestic spotlight strip for comparison 1 DHD.jpg (Light) low energy = low power, high-efficiency, efficient, "green" low energy led = LEDs, Light Emitting Diode, Solid-State Lighting, SSL LED lamp sourced from ultraleds.co.uk part number ES5X1CW. This seems to be the yellow-phosphor-over-blue-LED style of construction and gives a very bluish cold and 'ghostly'/icy light from very tight point sources. Not very comfortable, to we're going to try to get used to it. These photos don't give a sense of how cold the light colour is. The light output is however very good for a bulb with less than half the energy input of the adjacent CFL (compact fluorescent lamp) bulbs.
	low energy LED 5W cool white bulb 240V mains alongside 11W CFL warm white lights on domestic spotlight strip for comparison 2 DHD.jpg (Light) " "
	low energy LED 5W cool white bulb 240V mains alongside 11W CFL warm white lights on domestic spotlight strip for comparison 3 DHD.jpg (Light) " "
	low energy LED 5W cool white bulb 240V mains alongside 11W CFL warm white lights on domestic spotlight strip for comparison 4 DHD.jpg (Light) " "
	low energy LED 5W cool white bulb 240V mains alongside 11W CFL warm white lights on domestic spotlight strip for comparison 5 DHD.jpg (Light) " "
	low energy LED 5W cool white bulb 240V mains alongside 11W CFL warm white lights on domestic spotlight strip for comparison 6 DHD.jpg (Light) " "
	low energy LED 5W cool white bulb 240V mains alongside 11W CFL warm white lights on domestic spotlight strip for comparison 7 DHD.jpg (Light) " "
	low energy LED 5W cool white bulb 240V mains ES Edison Screw base 5x1W Cree High Brightness closeup 1 DHD.jpg (Light) " Sourced from ultraleds.co.uk part number ES5X1CW.
	low energy LED 5W cool white bulb 240V mains ES Edison Screw base 5x1W Cree High Brightness closeup 2 DHD.jpg (Light) " "
	low energy LED 5W cool white bulb 240V mains ES Edison Screw base 5x1W Cree High Brightness closeup 3 DHD.jpg (Light) " "