[time-nuts] [OT] Ikea Lamp

Bruce Griffiths bruce.griffiths at xtra.co.nz
Sat Jan 30 20:34:09 UTC 2010


Hal Murray wrote:
>    
>> I have tinkered for a while looking for effectively spread leds for
>> panel meters. I dislike changing lights in my radios. But the LED
>> simply do not spread light the way lamps do.
>>      
> The classic clear plastic package with a round dome actually makes a pretty
> good lens.
>
> Most/many LEDs are available in 2 or 3 beam widths.  It's just a matter of
> how far the LED is from the focal point.  If you get 2 different ones and
> look at them from the side the difference in position is obvious.
>
> Of course, the wide ones aren't as bright.
>
>    
LEDs encapsulated in a diffusing material have very wide viewing angles 
but are dimmer for the same LED chip output power.

Bruce





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