An Application of Spectroscopy To Ray-Tracing Rendering

Version 1.2.1 of 24/10/2010-8:13 a.m.

The following renders were created by the developers of the program Luxrender based on the author's spectral distribution (SPD) data from The Double Amici Prism Spectroscope and on other data the author provided the Luxrender development team with. The conversion process can be summarized as follows:

luxrender conversion process diagram for final scenes
Complete conversion process diagram for final scenes

The success of these renders can be ascertained by comparing them with actual photos of scenes illuminated by some of these lamps in The Author's Lamp Collection document. In the author's opinion the renders on this page easily cross the boundary between real and imaginary, hence they can justifiably be called supremely beautiful, in the aesthetic sense[1].

room illuminated by clear high pressure Mercury vapor Lamp
Room illuminated by a Clear High Pressure Mercury Vapor Lamp. SPD: [1.4.1].

room illuminated by four bi-component warm triphosphor fluorescents lamps
Room illuminated by four bi-component warm triphosphor fluorescents lamps. SPD: [1.3.3].

room illuminated by xenon flash
Room illuminated by a xenon flash. SPD: [1.12.1].

room illuminated by four cool triphosphor philips activiva natural lamps
Room illuminated by four cool triphosphor Philips ActiViva Natural lamps. SPD: [1.3.8].

room illuminated by zinc lamp
Room illuminated by a zinc lamp. SPD: [1.8.4].

The following renders were made based on the author's SPD and additional data for the zinc lamp the author provided the developers with.

zinc lamps diagram render 1
Zinc lamps diagram render, based on structural data the author provided the developers with.

zinc lamps diagram render 2
Zinc lamps diagram render, with one lamp lit and the other lamps resonating. SPD: [1.8.4].

zinc, rubidium and Mercury lamps
From left to right: zinc, rubidium and Mercury lamps. SPD: [1.8.4], [1.8.2] and [1.4.1].

metal halide, argon and xenon flash lamps
From left to right: metal halide (Hg/Na/In/Tl), argon and xenon flash lamps. SPD: [1.6.1], [1.9.5] and [1.12.1].

daylight halophosphate fluorescent, warm-white halophosphate fluorescent and bi-component triphosphor fluorescent lamps
From left to right: daylight halophosphate fluorescent, warm-white halophosphate fluorescent and bi-component triphosphor fluorescent lamps. SPD: [1.3.1], [1.3.2] and [1.3.3].

random selection of lamp renders
Random selection from the categories HPM, MH and various other categories, with Wattage taken into account.

blue led, red diode laser and green laser
Diode section. Blue LED, Red Diode Laser and Green Laser. SPD: [1.7.1], [1.7.2] and [1.7.3].

all lamps rendered
All the lamps shown in The Double Amici Prism Spectroscope document, from top to bottom and left to right[2][3].

Notes

  1. All photos property and courtesy of Terrence Vergauwen of Luxrender.
  2. It's a fairly good exercise in color science to try to match each lamp separately with the corresponding spectrum in The Double Amici Prism Spectroscope document.
  3. All the spectra in The Double Amici Prism Spectroscope document have been reverse-engineered by a Luxrender user. For details, check Luxrender forum's Lamp Spectra Page (requires free registration) and Luxrender Lighting Wiki.

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