Today for a limited time-period the German Make: -magazine offers a free download of the article (in PDF) with a full description how to make your own laser video projector. The projector is PAL-compatible and uses three laser diodes in red, blue and green. The mechanics of this device are very interesting, it is fully mechanical. The text is in German, but the pictures and the circuits will speak for themselves. For the download you just have to press the green button, and fill in your address.
https://shop.heise.de/katalog/laser-tv-projektor