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Do colored CFs exist?

Discussion in 'Lighting' started by Paul Ciszek, Aug 19, 2007.

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  1. Paul Ciszek

    Paul Ciszek Guest

    Does anyone produce CF bulbs with colored phosphor? Sure, some places
    sell dipped CF bulbs, but that would be wasteful--a bulb with a single
    color phosphor could emit all of its light as a particular color, much
    like an LED.
     
  2. I think the market for such lamps would be too small. I
    also don't know if there are any phosphors, other than the
    three colors used for the tri-band system, that would
    survive the high UV intensity of CFLs. If such lamps were
    made that would have to be rather expensive compared to
    normal high production volume CFLs.

    4-foot T12 lamps are (or were) available in a variety of
    colors, but the sales volume for these colored lamps was
    always very small and they operated in a relative low UV
    intensity environment. Even today, with the shift to T8
    and T5 lamps, I think that most lamps with non-white
    phosphor blends are made only in T12 diameter.

    --
    Vic Roberts
    http://www.RobertsResearchInc.com
    To reply via e-mail:
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    site without written permission.
     
  3. On Mon, 20 Aug 2007 03:28:54 -0700,
    Do you know if these use white phosphor with a color filter,
    or a colored phosphor?

    --
    Vic Roberts
    http://www.RobertsResearchInc.com
    To reply via e-mail:
    replace xxx with vdr in the Reply to: address
    or use e-mail address listed at the Web site.

    This information is provided for educational purposes only.
    It may not be used in any publication or posted on any Web
    site without written permission.
     
  4. TKM

    TKM Guest

    A second-hand report from a product manager at TCP (a large manufacturer of
    CFLs) indicates that the only CFLs that use colored phosphors are the older
    low-wattage "twin tube" types. The others are filtered, probably for the
    reason that Vic indicates.

    Terry McGowan
     
  5. On Sun, 26 Aug 2007 09:37:17 -0700,
    You are correct. I should have said a slightly yellow
    phosphor that when combined with the blue light emitted by
    the excited mercury atoms will result in "white" light being
    emitted by the lamp.
    How can you tell? Do the lamps look white or colored when
    they are off?
    --
    Vic Roberts
    http://www.RobertsResearchInc.com
    To reply via e-mail:
    replace xxx with vdr in the Reply to: address
    or use e-mail address listed at the Web site.

    This information is provided for educational purposes only.
    It may not be used in any publication or posted on any Web
    site without written permission.
     
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