Re: Lamp as artificial sun?

In article <45f45192$0$13978$edfadb0f@xxxxxxxxxxxxxxxxxxxx>, KLP wrote:
Hi all,

I am for a laboratory setup looking for a lamp with a spectrum and intensity
as close to the sun as possible.

I have on different websites found references to HPS lamps mostly used for
plant growth (Cannabis etc. -:)

Has anybody ecperiece with such lamps regarding stability (both spectrum and
intentisty). Recommendations of specific lamps are very welcome!

One lamp I hear being used for this is the xenon long arc lamp. Its
spectrum is pretty close to that of the sun, except for a few strong
spikes in the near-IR around 820-1000 nm. I expect some shortwave UV to
filter out if you want to simulate sunlight below the ozone layer.

Short arc xenon arc lamps have less of the IR spikes, especially in
higher wattages. However, they have shorter life expectancy than long arc
xenon lamps and they explode a lot more easily.

- Don Klipstein (don@xxxxxxxxx)
.

Relevant Pages

  • Re: Lamp as artificial sun?
    ... I am for a laboratory setup looking for a lamp with a spectrum and intensity ... as close to the sun as possible. ... Has anybody ecperiece with such lamps regarding stability (both spectrum and ... For plant growth some manufacturers sell lamps specifically designed to match ...
    (sci.optics)
  • Re: If 100W incandescent is 1610lm and 27W CFL is comparable...
    ... rough but reasonable approximation to that of the human eye. ... Film tends to see incandescent lamps as slightly brighter than most ... non-incandescent lamps when both appear equally bright to the human eye. ... decreasing as wavelength increases through the red region of the spectrum. ...
    (sci.engr.lighting)
  • Re: "Full-spectrum" article on Wikipedia
    ... spectrum of the lamps in question to make an accurate ... maximum on the measured spectrum and i_k is the intensity at ... are dissonant: HPS and HPX. ... so perhaps the calculation for the HPS is not that ...
    (sci.engr.lighting)
  • Re: Flesh tones
    ... the camera crews to illuminate the BBC interviewers automatically be ... eye's own varying sensitivity across the spectrum). ... sodium lamps, used for decades as street lighting - the orange glow, ... I don't know about HMI lamps, but I'd be surprised if there aren't ...
    (uk.tech.broadcast)
  • Re: Spectrum of XBO
    ... I measure is corrected for the wavelength dependence of the detector, ... for the characteristics of the excitation monochromator. ... and the spectrum as a PDF at ... unit, transformer, lamphouse and lamps: ...
    (sci.engr.lighting)