For those who’ve always wanted a professional grade laser projector, check out this nifty home built version. Video demonstrations after the jump.

The most important component used for laser projectors is the laser unit, He-Ne laser had been used in early days, multi-colored mixed gas laser is currently used for high end laser projector and solid state laser is one of the brand-new laser device that has been recently used. However the laser unit was very expensive and junk He-Ne gas laser cannot be modulated directly, so that I could not resolve to obtain the laser unit with a modulator

[via HackedGadgets]

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