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Re: CCFL, yes!


  • From: Tom Deering <tmd@xxxxxxxxxxx>
  • Subject: Re: CCFL, yes!
  • Date: Mon, 25 Oct 1999 16:34:07 -0400

On 10/25/99, Greg Erker wrote:

>  This bulb number, according to my Digi-Key catalog appears to
>be a JKL part number BF5118-20B. And the -20 portion indicates
>their RGB phosphor which has peaks in the R, G and B to make
>a brighter display in a laptop LCD.
>
>  But is this really the best phosphor for viewing slides?
>
>  From their FAQ:
>
>    Phosphor Type Color Temperature
>  -01 (Warm White)    4700 to 4900° K
>  -20 (RGB White)     5300 to 5500° K
>  -21 (Cool White)    7300 to 7500° K
>
>  the RGB white seems closest to 5000K but I wonder if the other phosphors
>might be smoother spectrally and look better with slides.

Well, people often say they like the color and brightness of the 
Cabin light panel, and it uses a 5000K CCFL!  Sounds perfect to me. 
:^)

Info about the Cabin from http://www.introphoto.co.uk/cabin.htm:

>>Precision Colour Temperature
>>Daylight colour temperature of 5000K is achieved by using a
>>unique, high-tech inverter driven cold cathode fluorescent
>>lamp. Illumination is flicker free.

This page includes other technical specifications.  We should be able 
to use this to exactly reverse engineer one.  Heh, heh.  :^)

Tom