Light

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.
Download small medium full - FREE to download and use! (c) Damon Hart-Davis
(Light): low energy LED 5W cool white bulb 240V mains alongside 11W CFL warm white lights on domestic spotlight strip for comparison 1 DHD.jpg
D=2007-06-06 [Jun 6, 2007]; S=3MB, 3264x2448; T=JPEG image [MIME:image/jpeg].

Rating: 58/100.

Key: D= file date of exhibit; S= size in bytes, XxY pixels, etc; T= type of exhibit; L= location/time or viewpoint of exhibit (if known).

• 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, LED light bulb, LED-leuchtmittel, LED-lampen, ampoule à LED, bombilla LED = 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), available retail for domestic use in a number of roles/settings.

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Some Similar Exhibits

Thumbnail	Exhibit Name
	low energy LED 7W warm white 3000K GU10 355lm 120 degree beam angle ALTLED Aurora V3 M02GW007KC 90 in situ in test light fitting alongside Omicron CFL 11W warm white 2700K GU10 550lm 1 DHD.jpg (Light) low energy = low power, high-efficiency, efficient, "green" low energy led = LEDs, Light Emitting Diode, Solid-State Lighting, SSL, LED light bulb, LED-leuchtmittel, LED-lampen, ampoule à LED, bombilla LED
	New low energy LED strip lighting cool white decorative for under cupboard lighting 1 DHD.jpg (Light) " ~0.5W per strip, 12V DC via mains adaptor, pluggable together in useful ways, Maplin A07JT and A08JT extension kits.

 

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