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Laser Projection

Laser-phosphor and RGB laser illumination — the current standard for high-brightness fulldome projection.

RGB laser galvanometer scanner used in laser projection
RGB laser galvanometer scanner — the core of modern laser projection systems · Photo: Autopilot · Source · CC BY-SA 4.0

What is it?

Two main variants: laser-phosphor (blue lasers excite phosphor → white light) and RGB laser / 6P (separate R, G, B laser diodes for pure spectral colours). RGB laser offers wider colour gamut and higher contrast.

Benefits

  • 20,000–30,000 hour lifespan (vs. 2,000–4,000 for lamps)
  • Stable brightness over lifetime
  • Instant on/off
  • Wider colour gamut (especially RGB laser)

Limitations in Dome

Even laser projectors face cross-reflectance. Kirk Johnson (Cosm): "Brightness without contrast does not buy anything because of cross bounce." This drives the shift toward LED domes.

See also: DLP Projection → · LED Dome →

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